The Insect pest survey bulletin

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Material Information

Title:
The Insect pest survey bulletin
Physical Description:
v. : maps ; 26 cm.
Language:
English
Creator:
United States -- Bureau of Entomology
United States -- Bureau of Entomology and Plant Quarantine
Publisher:
Bureau of Entomology, U.S. Dept. of Agriculture
Place of Publication:
Washington, D.C.
Publication Date:
Frequency:
monthly, mar-nov. plus annual[1926-]
monthly, apr.-nov.[ former 1922-1925]
monthly, may-nov.[ former 1921]

Subjects

Subjects / Keywords:
Insect pests -- Periodicals   ( lcsh )
Entomology -- Periodicals   ( lcsh )
Genre:
serial   ( sobekcm )
federal government publication   ( marcgt )

Notes

Dates or Sequential Designation:
Vol. 1, no. 1 (May 1, 1921)-
Numbering Peculiarities:
Vol. 14, no.9 issued only as a supplement..
Issuing Body:
Vols. for May 1, 1921-1934, issued by the U.S. Bureau of Entomology; 1935- by the U.S. Bureau of Entomology and Plant Quarantine.
General Note:
"A monthly review of entomological conditions throughout the United States" (varies slightly).
General Note:
Includes annual summary starting in 1926.
General Note:
Includes some supplements.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 030368280
oclc - 08816534
lccn - sn 86033699
Classification:
lcc - QL1 .I56
System ID:
AA00023228:00067

Full Text






IIJE IN C T P0 ST

BULL ETIN


6 U k V E Y


A periodical review of entonio'o-icdl conditions throughout t'.e United Stat.-i
issued on the first of each month from March to DecemLber, inclusi e.




















Vo.'ume SO 'v.m rry for 1'"'3-) Number 10




6 U R E A OJ OF ENTOMOLOGY

U N T ITED S T A T E S

DEPART1?1E NT OF AGRICULTURE

A N, D


THE STATE

AG EN CI ES


ENTOMOLOGICAL

COOPERATING


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IN-SE T 0 FEST. SURVEY BULLET IIT


Vol. 10 Sum-ary for 1930 o. 10




1717 0 -.JCTIO'_T

The yer 1930 h-ad. its most cors. i cuwi3 feotire a prolonged and
di astr'ous1 'idrou_ ht, probably the worst aince 1901. All the country east
of the Rockies except the extreme Kortheast n*1 Sotthen.at was more or
less affected; the Ohio River and ;.ov'er Micsissip-ri River Valleys, and
Maryland and Virginia, suffered moat. 17ater supply, a,- well as crons,
was affected and economic effects were prrofound. It seems likely that
effects upon insects and other animals, end u-son plants, will be mrked,
and that thiy -nay in som'-e cases persist several years. This effect has
already 'become evident in the case of the Mexican bean beetle, the cod-
ling moth, the oriental fruit moth, and the Z ropean corn borer.

January was below normal in temperature over most of the country,
especially in the VW'est; a lar'e area from northern Texas to eastern
Fashin--ton was 10 de7-rer.s or more below normal. The cold was steady and
snow cover was rather Zeneral, and winter -rain suffered little. Rain-
fall was heavy in the lower Missivsilr-i River and Ohio River Valleys.
February was almost the reverse of January in tem-rcrat Lre, with the prai-
rie States far above normal; moisti-ro was deficient in the Great Plains,
the Rockies, and the south Atlantic region.

March temperature w.-s near normal; but rainfall was variable, and
deficient over most of the country. Sersonable rains failed to occur in
the plains States, to the great detriment of winter wheat in the southern
part. April res well above normal in te-nwerature, especially in the Great
*Dplains; moisture was variable and generally deficient. The drought was
relieved latc in the month in many are' s !est of the Mississippi, but
continued in the Ohio River and lower MIississippi River Valleys, and mois-
ture became scanty in the Middle Atlantic States. '.r was marked by vari-
able temperatures, averaging not far from normal; by deficient rainfall in
the "-iddle and south Atlantic region, the Ohio River and middle Missis-
siimi River valleys, and the low; r Great La'ks rc-ion, with more plentiful
rains to the west and south, and excesaivc rainfall in the. lower Missis-
sippi River Valley.

June tcm-eretures were not iar f.rom. normal-; rainfall ':*; deficient -in
the Ohio River valley and almost -absent in the lower *i-;assicsippi River
-,7;7-




-~


Valley, but 'as fairly well *naintained &lsev-hcre. July r- 3 verj hot,
vith tem eratures from 2 to 3 d--'rcs (cove no-'.l over most of the
coj-itry, and rainf'll was very scafty exceCot on the southeast co't and
in t`e southern RocIies. A.s-ust v s somewhat w.-rmer than nor:n-l over
'nost of the colantry, with variable and deficient r .in-al. Sore areas,
cricecially in the Great Pl-ins r-_. -on, received good rains; but the
dro.;ght continued to be scverc in the Ohio River and. lo7^er Mississirni
,iver Valleys, and in parts of the Middile Atlantic section.

Daring the fall months there has been partial relief from the
drought in t-b3t places west of the Appalachians, but it continued se-
vere in Maryland and Virginia. A cold vr-ve late in Iovemrber carried
tcm-eeratiures down to levels typical of mid-winter over -nost of the coun-
try east of the Rockies, but r--,--r,_r:ntly caused no unusual damage.


GRASSHOFPERS

In spite of indications during the late fall of 1929, grasshoroer
demae-e in the :7Irthwest did not prove to be at all serious. The only
outbreaks of importance occurred in northlern Michigan and northeastern
Colorado during the early su.Trmmer. As tec sunnrer a--.'anced nore serious
outbreaks were reported from northeastern Colorado, northeastern -Tyoming,.
southwestern Montana and Tv'rts of Nebraska, South Dakota, Ok'lah-ma, and
Arizona, with localized outbreaks in Utah and southern California. In
th~e fail a serious outbreak devm.lored in Idaho, and reports of minor
damage vere rcceiv.d from practically the entire northern half of the
United States. During October very severe defoliation of youn2- citrus
occurred in many parts of Florida.

"The survey -nm:3 in Ylorth 1akota indicates that although grasshoppers
were only locally troublesome during 1930, their numbers are generally
increasing over the western part of the State to such an extent as to
make possible; serious d -'- in 1931 if favorable sprint veatner conditions
prevail." 1

"In western Montana -.ore 7nranssho-o-o;-rs -ere present during the latter
T-rt of the summer than at any tim-n since the series of bcW outbreaks
that began in 1917 rnd ended in l'`21, vcoord-1in:-; to a report of a survey.
In nort>-c .!trol ontana there is also a
treat increase in grasshopper populations.' In the irri.--.tcd sections the
red-legged grassho-o-ner, (Melano-olus fe-ur-rubrum DeG.) and two-stripre
gras shop-o r. (Mclanoplus bivittatus Say) rere dominating the situation.
In the dry land sections the lesser -igr tory 2rjs:?';r. (Mciaainlus
mexicanus atlan is Riley) is decidedly on the incrca.s an is a
numbers similar to those which prceded the outbreak of 1922 to 1925,
mlcn this species devastated practically the entire area. In the eastern
rt of Montana gr'Lsslioppers ware increasing, but not to the point that
a general outbreak was indicated. It is felt that 1931 rill be a critical


1 R. L. Shotvell, Broeau of Entomolo,.7y, U. S. D. A.









year from the stand-point of Qrasshooo-r '0 '.nce'. In many localities
enough eggs have been laid to orovidci.' f mr eniormoujs ,Do:sibl6 increase
if weather conditions should -nrovC aIvorablc. On the other hand, it is
entirely -possible that unlusually war-n eather in A-pril may caus porcma-
ture hatching of the egs, or that a -rolongeCd r'T;riod of wct weather
after the normal hatching periodd. may so r duce th(ir n,.mbrs as to wipe
out the gi.i in population -nadce uritn: the pa'st season of weather fa-
vorable to them." 1


T:3O::orT CRRICKET

The mor-non cricket (Ana-'brs siri'lcx H'ld.) appeared in very threat-
eiuin- nurnbcrs in Montana bat by th: 2nd of July the outbreak ws comr-
pletely under control. The serious out'crc'k in northwest ern Colorado
has also been brought under ractical control by cooperative action of
the State of Colorado and the Burt au of Enttmorlogy. The outbred ak which
formerly covered rather extensive arers in Moffat and Routt Counties,
Colorado, has now been red-aced to the Blue W^mtain section of Moffat
County. This pest also damaged n ootatoos in Dnvis County, Utah.


7HITE G:3TS

Many reports of defoliation, particulaily of pecan trees, by May
beetles, were received fromi(' Georgia vestward through the Gulf region,
and the larvae of these insects rere re' orted as unusually numerous in
the 1orth-Central States during ,..y. Injury by wh ite grubs continued to
be serious in the North-Central States throughout th-r early summer from
Indiana westward to Iowa and >braska and northTard into southern Minne-
sota and Wisconsin. This damar'c continued to Ibe roiortcd until the close
of the season.




Reports of da"" ge by rirevwor.s 7-err received from Florida and
Mississi-pnpi daring Ap-il, and as "he srring vance p reports were re-
ceived frI-m practically all parts of t0 country east of the Rocky Moun-
tains. In south-crntral and southern Illinois seve ral thousands of acres
of corn was replanted on- account of thosc insects, and similar d-amage
occurred in parts of South Dakota. 'revoras attr-:'0cd considera-ble atten-
tion in the irrigated districts of south r;-/ Idaho during May. Although
the sand rireworm (Hori stonotu'ns u:l cri.i Horn) did unusually scv re dam-g
to a variety of crops in South Carolina this year, the wirpworm M.-c2~Adji
v'sertia.us Fab. was conspicuously scarce in the bright tobacco district
of South Carolina.


1 J. R. Parker, Bureau of Entomology, U. S. D. A.







"The wiYrI wormn Heteroderes laurentii Guer., v`.ich was first discov-
ered in the United States in the fall of 1927, Ka* b,-come very abundant
in certain sections of the Gulf Coast St .tes. It is not '-*own just when
this insect was introduced, but scoutir:. during 19570 has shown the insect
present in the following States and counties: In. Alabama in 3-.ldvin and.
Mobile Counties; in Mississippi in Jackson, George, and Harrison Cozities;
in Florida in B-7c-7mbia, '7alton, Jackson, and Holmes Counties. All iden-
tifications of snecimens from Florida have *c. en made from larvae, since
scoutin,- was don( th( re during the period when adults were not plentiful
in the field. In the other St' tes Tentioned, adults as vell as larvae
have been collected. During 1930 the insect was very abun in 3-.livin
and Mobile Counties, Alabama. Soil siftr:r has sI'ovn a population in
some fields as high as 10 lnr-.'c -ocr square foot in the top 4 inches of
soil. The arrount of daa.ege or injury caused by the insect to various
crops is very hard to determine, since obser-r.tions along that line have
not been completed. -It is safe to sny, however, th.at considerable dam.Ee
is done where such a heavy population is found." 1


PIAITS FALSE WiRS7ORM

Similar to the conditions reported in 1929, the Plains false wire-
worm (Eleodes opaca Say) did very little damage throughout its entire
range this season. It v..-,s reported as moderately abzLdant in wheat at
Ulyss s, Kans., .,nd the beetles wecre observed in unprecedented numbers in
the entire wheat area of the panhandle of Texas.


CUTWORMS

The pale western cutworm (PorosaFrotis orthogonia Morr.) and the army
cutworm (Chorizagrotis auxiLaris Grt.) were appearing in destructive nu-
bers in scv( ral westernn States from Oklahoma to Nebrask-'. d-.ring late March,
and other species were reported as ap::c'.rinri in unusual numbers in the
Gulf region during that T-onth. As the. se-son adv',.'>'-., the usual number
of spring- re-ports vere received from practically all parts of the country.
Toward th. end of M" y damage by the pale Testern cutworm wras rciortod from
parts of Montana. These cutworm depredadtions continued until the early
part of June, especially from thc Dak.cotas and ^'--braska, and westward into
During the summer the varieated cutworm
(Lyconhotia mar.:aritosa Haw.) rather severely dam?, d alfalfa in the
southern tier of counties of r. braeka, and the black cutworm (Ajrctis
psilon Rott.) attacked corn and cotton in Mississippi. Durin~: the fall
months this sr-pcies seriously injured ovcr 2,000 **cles of lettuce Uj-r.d
west of Phoenix, Ariz. During Ay.-'rust thc '-ale western cutworm was local-
ly injurious in Utah, and the 3cortha armmyvrr (3?.rathra c .-f1i;r--t .7alk.)
occurred in outbreak numbers in the northeastern corner of ^?rth 2,rota.


1 K. L. Cocker' "-7, Burenu of F>.-tomology, U. S. D. A.










EDROPA2 Col.- BORM,

LRrge dots indicate heavy infestation.

Srrall I t ix'1 t P








-441-


=UROPEA2" CORN BORER

"The spread of the E7.Vr o0.e corn borer (Pnraucta nubilalis Hbn.)
during 1930 was retarded by the drought. To the westward, the insect ws
discovered in a single new towns'A-p of each of the following Indiana
counties: Delawarei, Fayette, Fulton, Hamilto-:, Forter, Pulaski, and Rush;
it was also found in nine tovns'irps of Madison and Henry Counties. In
Ohio it nearly or auite r cched the O'hio hiver in Adams, Cler-mrnt, Gallia,
and Heigs Counties and v.'- found in new townships in Highland, Pike, and
Jacckson Counties. It also crossed the Ohio River into three districts of
Lewis and Bracken Counties, Ky. Ic-' infestations were discovered in six
townships in Mason, Wood, Ritchie, and Tyler Counties, W. Va.; in eleven
townships in Lehigh and I'orthannton Counties, Pa.; and in eight townships
in 'Jarren, Hunterdon, and Iiir;ex Couities, N. J. The one-generation strain
spread eastw.'ard in the northwestern part of Litchfield County, Conn., and
the two-generation strain spread vwestvard in Connecticut in Tolland,
Hartford, and New Haven Coumnies, as well as extending along Long Island
Sound into Fairfield County. The only infe-tations found outside of the
States now under quarantine were those in Kentucky, alon; the Ohio River.
It is believed that these outbreaks arose through s-cread by the river.
The degree of infestation in the 1930 corn crop as co-'-.>red to that of
previous years, according to this year's survey, shows that there has been
an average reduction in corn-borer abundance of aprro::i'1ttely 25 -per cent
as compared to 1929. Decrcases of approximately 21, 58, and 29 per cent
were indicated for Michigan, Ohio, and Pennsylvania, respectively, and
increases of approximately 33 and 11 per cent were indicated fcr Indiana
and New York, respectively. These differences were brought about by vari-
ations.in the drought conditions. The larval survival in 1930 on the corn
at the European corn borer demonstration farm at Toledo was reduced to 4
per cent as compared to 25 per cent on the same variety of corn in 1929.
I The reduction appears to be due largely to the extremely hot, dry spring
and summer, the heat bcing so intense as to prevent a considerable percent-
age of the eggs fro- hatching in many areas and causing the death of a
large number of young larvae. In the two-generation area in New England,
comprising '!*! :', IKcy HampsAire, eastern Massachusetts, Rhode Island, and
Connecticut, there has been a general dec-lease in infestation, although
an increase occurred in a part of the arca. In eastern Massachusetts
Bristol, Middlesex, and Norfolk Counties show an increase, while Plymouth,
Dukes, and Nantucket Counties show considerable dtcroasc. In Rhode Island
there is also a great decrease in infestation, which is largely due to good
clean-u-p -easures during thc winter '-onths, and unfavorable conditions for
the first generation. Commercial da ria-e to some extent in corn. was observed.
in some of the counties in southern Massachusetts and Rhoade Island, espe-
cially b- the second generation. The co:Tmercial damage in the one-gener-
ation area in the Great Lakes section was very slight.

"Below is shown the status of infestation, by States, in 1929 and. in
1930, in terms of the average number of borers per 100 plants.






-442-


One- a.cration area:
1929 1930''
Mi chi,"1 15. .d 12.41
In ia;na n .57 .76
Ohio 12.89 5.40
Penn- lvania .96 0
-, i York 9.21. 10.23


Tv.o- ener'tion aroa:
1929 1,7
Connecticut 8.60 4.43
Ma-ine 2.56 .01
Mn s suchuse tt s, 235.61 135.16
:'w shiree '11.74 1.43
Rhode Island.. 187.36 42.10 1


FALL '/J~rOM .. :'

*Durinrj late Juno the fall ar-pyrorm (L-by'a fr- r S. & A.)
st arted 'attacks in outbreak nuT-bcrs in th2 Gulf region and the South
Atlantic States. The infestation in Florida was the alost severe since
1912. Lator in the su-rer this insect also did much maj^ in the
Lower Rio Grande Valley of Texas and- outbreaks were reported from other
sections, and by fail it was ouite generally Drevalont over the Middle
Atlantic and' East Central States. Apparently the long, dry suimer pre-
vented the growth of succulent <.1ss in pasture lands and caused the ioths
to lay their ,_^ on s--all -Ttches of any green food available. As a
result, hundreds of la,-rns were seriously over-run by an unusual number of
caterpillars. Fall-sov-n V-hCat -and other s-"all grains vhich were planted
for early fall -casture also bccane rather heavily infested.


VELV3T33A CA c1r:ET I LL'aR

The vclvetbcan catcr-nillar (Anticarsia ge-matilis Hbn.) vras very
decidedly less troubleso-e t'is ycar in the- Gulf rcjinn ; re the -0'st
serious nutbrcnk or. record rau recorIde l'\st year. It a-Opeare'. this year,
hovever, in destructive nunbcrs in so-r. districts of LouiM' vin- and Okla-
hioma.




Durin.k; 'the latter part oi' Arril the corn ear vorn (: t'i obsoleta
Fab.) v.ns aprin: in --oderaztc xnu-bcrs over the southern p-art of Floriain.
D-ring May it was reported cuitc generally -irevalent in the sou-,z.'crn -prt
of the Gulf States and in southern and central 3,x.s. the middle of
July it r.3 hearing in Icstructive nixbcrs in thlw Caxolinas and corn


Srlat ^irn.tine and Onntroi M-i.istr- tiont1. S. r. A.








-443-


beinrv shipped into the Northern St.,.tes from the u-ulf r-gion was found to
be 40 per cent infested. During July mn0ore or less damage was reported.
from the southern hilf of th-' nitcc. S:tas east of the Rockies. Byj
October tais insect was observed. in noticeable numbers in southern New
Hampshire for the first time since 2 -23 ad. at that time it was quite
prevalent throughout the remainder of the New R:. and Middle Atlantic
States. In the intensive truck-groz 1n.-, district of Long Island it was
causing a loss of at least one-third of the cron of sweet corn. Generally
heavy infestations during the fall ,v.erc reported westward as far as Indiana,
Kentucky, Michigan, Wisconsin, and ----braska.


COTTO:T LEAF d7zF2

rTh cotton leaf worm (Al'aba-a ,r-4.11!acea Hbn.) was prevalent in
practically all fields in th? lo': er Rio G-rande Valley during the last week
in June. It was not re-corted fromn the C-ulf States until July. A very
heavy infestation in south-central and. southeastern Arizona resulted in an
estimated loss of 30 -ner cent in the cotten yield. A northward flight
of the moths started in Septe-mber. By the 14th of the month the insect
was reported from central Missouri, on the 15th in southern Illinois, by
the 23rd. of the month it had reached the District of Columbia, and the
next day it ras rep-orted from southern Michi gan -nd north-central New York.
On Sopt:mber 25 it ain praid in tuc Connccticut River Valley at AXmherst
and. along the coast at Boston, and late in the -onth it app--eared in south-
ern Ontario, Canada. A second flight of these 'r'oths apeared i'n southern
Illinois on October 13 and 14 and later in the month the moths did serious
dr:.-.cge to late strawberries, an les, and nrs in 71isconsin.


SUJACA2J3 BCrSR

Reports d-uri--.: the very e7rly spring months indicated that the s
cane borer (Diatraea sacchardlis F-rb.)-had suffered heavy Tinter mortality
in Louisiana. As the s-prin.7- acp mcci tec borer was found to be at a very-
low ebb in the Everglad-es district of Florida, only one point, near
Sarasota, showing heavy infest'ation. By the mliddle of Aumust the infes-
tation was so low in Loisiana that th> general infestation ra-s estimated
at not over 2 per cent of the stalks infestfd. At that time eg,-: w-re
scarce and. -arasitis-z: by Trich-n)ra-nia minZtun Riley v.:'s very high.


Hz2SIAr FLY

"The infestations of the Kcssiann fly (Phytor-aga destructor Say)
throughout the Middle Atlantic States, ircluim:- West Virginia, Virginia,
and Ibrth Carolina, are so light as to cause no anxiety to growers
this coming season, and, except for the State of A.. York, a slight
decrease in the amount of Hessian fly infestation has been fou'd." 1


1 C. C. Hill, Bureau of Entomology, U. S. D. A.





-444-


"In general, infestpti-n in thc Dast Central S7ats 7.S too
light to affect yi lds, nartic-ularly in thr northern portion of this
region. 'T.ile in.ftstations ran noticeably higher in the southern
-ortion, material injury was restricted to occasiona.l fields, exc:i-t
in southvern Illinois, where it w-ns -.oral in sm localitics. -.ere
did not em to be -much danger of serious infestation in fall in
southern Michigan and in tlhe northern portions of Ohio, Indlian, and
Illinois. The somewhat greater aLc L-,,-1.-..ce of the fly in the southern
Tarts of those States and in Kentucky and Tennessee, howe-er, CeS2-
cially in some localities, -,ado h'avier infestations in the fo.1l -mre
likely in that region. However, later observations indicate that
infesta.tion is very low throughout this territory with the sin-le
exception of west-central Illinois, where infestations are severe.
Parasitism is normnal, vhich. "7cans thaot it is ',n im-portant but not a
controllin- factor. From our -Tncral kniowld:ge of conditions it is
ouir opinion that the avera-cs shov.n in Table 1 for southern Illinois,
southern Kentucky, and southern Tennessee are -much too hig1h to repre-
sent the true situation." 1

''Tcre vwas not as nuch Eain n infestation in Missouri as was to
be expected from the conditions of last fall (1929). The cause for
this was a-pnarently unfavorable weather conditions during the spring
-and early summer montlhs. Infcstations were noticeably hi -her in east-
central and southwestern Missouri than elsewhere in that State. In
gencra!, less than 25 per cent of the wheat stens were infested, al-
though in occasional fields infestation rnjdjhigh as from 42 per cent
to 90 per cent. Only in such occasional fields was the -u-nited infes-
tation by fall and s-ring broods high enough to affect the yield. The
infestation in Kansas, in general l was low. The yields were not mea-
surably affected by the fly, except in two localities where the mxiira
infest-tions found in the Statc occurred. Tl-ese localities wcre Hia-
waotha, in the extreme northeast, and Colby, in the extreme northwest
portions, respectively. These high infestations, in both cases, rE-re-
sent o .idn outbreaks of the fly at localities from vhich it has been
almost totally absent for several :u'rs. Although the .-'rhplC5 repre-
scnting Hiawatha ,7(ere taken from ex-erinental fields only, these were
not j.;vu under conditions especially favorable to the fly;. the -.uh.est
infestations found in northwestern Kansas were from. field sa:-rles. In
ebraska the infestation w-, in general, exceptionally 'i"h for that
State. The yields will -robably be affected in -nost of the exreriaental
-lots. It is believed that at the only locality in which the infczt--
tions did not exceed 27 per cent of thc culms, the lower infestation was
due to system-atic rotation of crops and general excellence of fa9.-.i4,
toget ier with copn- rative isolbtion fr:.-. other whent fields. .e fly
is, for all -ractical -yirposes, absent froo O-lah'-a wheat 'ilds, except
in the oxtreme northeastern --ortions. In the expMriental -lots of this
section the infestation ran"' fro- 19 to 38 -er cent of the rtc-s.
Thcre is rc- 'son to believe, however, that thosc plots are subject to l-)cal
conditions whichh tend to keep- the infesta-tion l'L'oi-i Ily high." 2


1 C.M.Pa.c.pd, Bureau of En-tooology, U. S. D. A.
2 J. 1. Horton, 32 reau of S1'.to-ology, U. S. D. A.




























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ALFAUA WBV'IL

Known distrilution to Decjnmber 31, 1930.


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-.445-


TA3ME I. Su-iancrized figures on llfcstation by the Hessian fly.


District Per cent of
straws infested.
l-ev York (1) - - 5
.Pennsylvania (2) -- 2
Maryland-.(2)'.-'-- 1
Delaware (2) - -
West Virjinia,
ra]-.^i.?le (2) 1
Virginia (2) - - 2
:7.srth Carolina (2) 2
_orthcrn Ohio (3) - 10
Southern Ohio (3) - 18
l'orthern Indiana (3) 7
Southern Indiana (3) 17
Southern Illinois (3)- 47


District Per cent of
straws infested.
Southern Michigan (3) 4
:i'-t1hern Kentucky (.3) 15
Southern Kentucky (3) 52
Northern T&-: .Dssee (3) 3
South rn Tennessee (3) 28
Southern MissouIri (4) 21
Central Missouri (4) 19
Northwestern Missouri(4) 14
Southeastern NLebraska(4) 41
We stern K-qnc--3 (4) - 14
32..stcrn K' n --s (4) - 10
Northern O:c1alio'-a (4) 4


GREEN.BUG.

Early in Mrrch the' green bug (Tsxo7teragrnun Rond.) was re-orted
as being very 'buncdnt in south-central Kansas, and during late June and
early July it beca'ne -,ore --revalent than in several years in parts of
Minnesota, the Dakotas, :7'braska, and Colorado. Very considerable d.sT.fge
vas done in nany districts.


CHIIICH 3BUG

The chinch bug (Blissus leuco-terus Say) has shown no unusual preva-
lence during the past yoar over the s tar part of the chinch bug belt.
However, in -parts of Illinois, Missousri, and Okla-.ho'na the insect seemed
to be decidedly on the incr-Ia, and ea-rly in October a heavy flight to
hibernatir.g quarters vas obser-red in Illinis. A s'alloutbreak of this
insect attacking St. Aucustinc grass 7as also reported lat, in the season
from Fairfax, S. C.


-LF;Lr WEEVIL

"The rrincinal development of interest reeard.ing' the falfalfa weevil
(Phytonomus -osticus Gyll.) ha.s b een the discovery that an ovcrwheyal-Ang
per entaeC of parasitismi -lay be co7.-letcly offset in its econo'nic effect
by weather conditions. It is ,lso interesting to record that alfrlfa



(1) C. R. Crosby, Cornell Univcrsity.
(2) C. C. Hill, Bureau of ihto--oloy, U. S. D. A.
(3) C. M. Packard, Burcau of 2rytoolo:y, U. S. D. A.
(4) J. R. :Torton, Bureau of >Lto-7qloo-y, U. S. D. A.







v-ecvils c'an'-not be ford "by intensive search in the screr.iA._ s from fall
potatoes, and tY-%.t there is '*- ini-um of dr> --.7.--r of incl%.Ii-.:' live weevils
in alfalfa me'.1 found in -ortable --ills and blown into frei .ht cars in
bulk. "


S:T I7-70: CO;:' L2AF 3zm:TL

A rather unusual outbreakc of the southern corn leaf beetle (My:chr-us
denticollis Lee.) was re-ported from Indiana. In one field. 90 7,rr cent of
the corn was eaten off below the ground by these beetles. Similar dp.-.a-,e
was re-orted from Xentucky and. fro-- Clermont County, Ohio. It was also
re---orted from Missouri.


CODLI-.G MOTH

Daring the later winter months of 1929-30 it wa.s evident th.t winter
mortality of the codling moth (Car-rocapsa. -nomonella L.) Y--as extremely :i-gh
in parts of Indiana and Illinois, in -many -laces all of the larvae h:i.g
been killed. Similar high mortality v-.s reported fro-n the Pacific North-
west and the Grcat Basin, but mortality of the larvae in the Pacific -:orth-
west was recorded fro-m above the snow line, and as there ras considerable
snow over this region the actual survival was r-:,ve normal. 3,- the latter
part of March the la-rvae were startin- to pupate in .t-v: Mexico. As the
season advanced the second brood ricked up very materially and by the 7.i4.dle
of July they were emerging in threatening numbers in the 7.st-Central States.
The unusually hot, dry weather that nrevailed'over a r.reat deal of the
country soe-es to have stimulated this insect, n"... very severe late da-age
Was reported from prn~cticpll'r the entire drought area, anil Tew York State,
d-uring <.L.,t. On the other hand, in the Pacific ::orthwEst late infesta-
tion was r-':-rted to be -ruch below normal. g contiY.':.i hatching during
tie first tv.;-j vvcichs of Se-rtember in Indiana, Illinois, and K:-ti.::y, and
-oths vere still emerging during the third week of that -nonth in central
Ohio.


ORI2::T. FRUIT MOTH

"The Oriental fruit m~oth (Lvs-eyresia molesta Busck) was not on the
whole so injurious during the season 130 as during; 1929, presumably on
account of the unfavorable temperature conditions during the winter. It
a-ocaers tnat the com-mercial -neach districts cast of the Mississippi River,
and some west of the river, are now rather gener-lly infestc.', though no
recent actual survey to determine distribution has been ma e. At the
Moorestown, N. J., laboratory special experiments fere co. rced out with
native parasites of this insect; these have resulted in a v-aterial in-
creoae in our ':nowledge of these beneficial insects. One species has
been propagated in considerable numbers oil distributi to various inter-
ested States. The entomolo,-ist sent to rropc to collect parasites of the


1 Georgc I. Reeves. Bureau of mnto'rology, U. S. 1. A.












ORIENTAL FRUIT MOTH

Known distribution up to Decemober 31, 1930.







fruit moth has established headquarters at Antibes, France, and has
thoroughly infbr6ned'himself on the general fruit-n.'ioth situation in the
region. One shipment of parasites 'from France has already been received
and important shipments are expect ed another season. Further investiga-
tions of insecticides for the fruit moth in the laboratory and field have
not hov.' any very hopeful results 1

EL'& 3 T EER .'T MY
ASA T3RP T2MT: CATERPI I.AR

The eastern tent caterpillar (Malcr-i g m-ricnrini Fab.) was about
normal in New :;:land and above normal in -'Vn1.-rtce in Virginia and.
southward.- ggs -were observed hatching during the second week, in March
in Georgia and Arkansas and tents vcre being started during the latter
part of that month in the South Atlantic States.


FRUIT-T?22 IF L EOL1R

During the very early srrin- -tCnths reports of Ilrge numbers of the
fruit-tree leaf roller (Archim-ts W'r i1- Wal:.) were received from
Wisconsin, and late in June very h avy defoliation of oak was re-norted
from practically thhe entire cak-I'orest area, some large stands being more
than 70 per cent defoliated. As tie spring advanced larvae were observed
to be very plentiful in Michigan, cs- cially near Grand Bapids. The
insect vas quite generally prevalent throu Phout both the Hudsor River
Valley and northern Icw York State and did considerable d&-T'>e in a num-
ber of localities.


AFPLE MAGGOT

The first adults of the a=`le maggot (Riagoletis -nomonclla .Jalsh)
appeared in the Hudson River Valley in New York the last week in June,
at Durham, N. H., or. July 5, in northern Ohio July 11, and A-es, Iowa,
about the middle of July. This insect was collected in practically all
of the apple -growing reions in Minresota, i;here it wrs more abundant
this year than usual. It did not causc any noticeable d;m-ir-ge in >7:
York State or northern Ohio. The first report of this insect from the
northeastern part of Thbrasa was received this year, the report coming
from Knox County.


PLL'M CURCULIO

Unusually large numbers of the plum curculio (ZonotrPchi-lus
nenu--hor Hbst.) went into hibernation in the fall of 1939 throughout
the entire eastern part of the United States. On March 17 these insects
began leaving hibernation quarters in large numbers in the Georgia -fruit


1 A. L. Q. uaintance, Bureau of Entomology, U. S. D. A.








belt, while ur to the third week of -.arch no adults hnad ".*en seen in
Delaware and. Virg-ini. and. it v-s not until the -middle of April that the
first :.'.l-Its ereo observed in this re-ion. This is extre-ely late for
the Atlantic Seab"oard, as adults e-erged fromn hibLr-.r -tion -: "ut M rch 7
in 1929. '171e first weevils wore observ-.d in the trees in south':rn Illi-
nois ;-ril 14 tis year and A-ril 6 in 1929. :::-laying vas well under
vay durin' the last v.ee-. in April in Georgia. The first larva was ob-
served to lean-e -each drops in the Fort Valley district of Georgia on
April 28. This is about tv'o weeks later than usual, and as a- res JIt no
da~" *e '*.. done cxcert to extremely late varieties of .caches in the
G orgia fruit belt. In the Z-1st-Ce:ntrnl States, -,articularly in the
so cthern part, this insect seriously m-.a.-ed -m--les during s u. i
is accounted for by the com-plete failure of the stone-frait crop 'e to
winter killin- in this region. During June t'-is insect appeared tn be
-ore prevalent than- usual in the New England and Middle Atl!antic S3atcs.
Tov .'d the end of the season !- very considerable late injury rWas re-'nrt-
ed thro-uhouft the :-v l Middle Atlantic, and >ast-Central fruit
sections, while in the South this insect .-- s less destructive in
previous years.




"Under the quarantine regulations for the Japa-ncze beetle (Poillia
jaronica I.:-Y.-.), in effect throu-h',-ut the su--er of 1930, the area
designated aIs ,enrally infested. covered 25,592 square *siiles, ext -C,
from the vicinity of Balti-nore, Md., a-nd Harris'-,,r;r, Pa., to. *cv.wburi-,
T. Y., and T l.., Haven, Conn. Outside this area there occur a number of
,7ore or less isolated infestations in v'-.t is known as the lightly in-
fested area. The latter covers 18,293 so a-re -'iles, largely in M-rlarj,
central Pennsylvania, arnd Connecticut. Scouting during the gr-'in:-
sea.son of 1930 showed new infestations outside the regulated. at
Plymouth, New Bedford, and Attleboro, Mass.; 22.wport and 'Jesterly, R. I.;
Waverly and ffalo, T. Y.; Lock 1Haven, Pitt sb...r h, :--.v Castle, ani five
other point's between Harrisburg and. Pittsburgh, Pa.; Georgcto vrn' and
Lewes, Del.; ,1 Tev-ort UL.*s, Portsmouth, and five villages in 'Az'mc
and lorthal--ton counties, Va. In addition, the presence of inmfstation.
as determined ,at 3oston, Mass., Providence, R. I., a7 Cape Ch.-rles r'nd
IT>rfolk, Va., who1re bectlas had previously bc en discovered althoi, these
localities h--l. not been brought _nder I'-' deral quarrantine rcculatic.s.
Points in the li 'tly infested areas vw'Wre J-apnese b etles a not
pr eviously boon discovered included TWest Sprinfield't
..nfield, Brad3ford, Danbury, and TcrrriIlle, Conn.; South '*-verly, Lewis-
buirg, Carlisl; and Boiling- S-ri.:. 3, P-.; -nd Hy'attsville 4teverton,
Md. At a num-br of these -oints only one Japanese beetle was collect'..
Th.e a-.ost -'ronounced increases in the nu-'ber of b eetles caught in traps
at the outlying pointz of infestation vcre at C1p, Charles and Al.-.-
d.ta, Va.; Hartfard, Conn.; and Ca-brid-c, Md." 1


1 Plant Qauarantine ond Control Adlninistrrtinn, U. S. D. A.


-4-48-








JAPA9USR 3WL 1930

Pense dots indicate generally infested territory

Spares lightly ifstn

Large a isolated infestations







-449-.


ASIATIC 3M2TL: =7' ASIATIC G-2; B22L2

"The abundance of the Asi- tic b:.etle (A-ecrila oricntralis "h.t terh.)
and the Asiatic rden beetle (Ascrica cpstrnca Arrow) bs been reduced
by the drought during the past two su-.Tners. The Asia-tic beetle hps been
affected. -ore -s it flies very little. In 1930 lawn-turf injury vws re-
ported at Ilew Haven, Conn., and. in Nov Yor'- at Thite Plfi-ns, ue. Rochelle,
and. Rosyin. 3xri nation of conditions throughout the infested area shows
that the Asi-tic beetle will remain abundant durin- years when there is
a drought su-ner if the soil is not so porous that all traces of moisture
disao-ear. The extensive application of lead. arsenate to lawns during
the period fro-i 1926 to 1930 has also helped to checkc the Asiatic beetle
at -mnany localities. The dense infestations of the Asiatic garden beetle
have been reduced so that plant injury in 1930 was about one-third as
great as in 1928. A large part of this reduction of densc infestations
may be credited to the drougim, but so'c is due to a migration. As a
result, a much larger area has an abundant infestation than at any ear-
lier period, and "ore extensive oc-:no-.ic injury can be expected unless
so-".e checking factor holds down the aburDdance of the Asiatic garden beetle.
In 1930 injury of a new tyre by *-rubs of the Asiatic beetle and the Asiatic
garden beetle occurred in N'ev York. They were found f eding in garden's union
the roots of bean, beet, corn, onion, rhubarb, and strawberry plantc.
They v:rc very destructive to strawberry beds and young: ; veetables." 1


SA1T JOS7: Sc11=

During the winter -months of 1929-30 surveys in several States indi-
cated that in the Middle Atlantic region and the southern p-art of the
East-Central Statcs the San Jose Scale (As-idiotus '-erniciosus Com-st.)
see-' 'ed to be slightly on the increase rhile in the northern parts of
this region winter -ortality was high. North of East St. Louis, Ill.,
only 2 per cent of the ;c-*le survived, The first crawlers Tere observed
in Indiana on June 1 and in THasnin_:ton State on June 10. This insect
very materially increased in central -"d southern Illinois, which is
believed to have been due to the hot su--er and mild fall.


XJROPEA2 27D :IT2

Early observations in 1930 indicated that the Europcan red -ite
(Parat et ranychius pilot sus C. & F.) was increasing in abunajince in the
2,"'st Central States, r'mrticularl- in the northern part, but it was decid-
edly less rL *dnt than usual in the :7-T7- I-ngland and Midftle Atlantic
States. This insect was rediscovered in Utiah in August, 1929, after a
lapse of five years since it vas last obs rved in that State. It ha s
also recently become established in central California. The very dry
weather rhich prevailed over m.uch of the eastern r-rt of the United States
during July and A,--.st resulted in a decided increase in all red spiders.


1 H. C. Hellocik, Bureau of 2ntocology, U. S. D. A.







A re. s-icr !cstro-e(! 7-i,000 acres of .crat in Ci7rron _r
Counties, O-l.., during A-ril and Hay.


m-:-I: CHIDS

Durin;, the -;-intcr -o-;ts of 10'22-30 fruit a-hid c-s see-ned to '-c
bi- lov. norr.l in >nce in thc 'astcrn St'-tes, o these insc-cts were
not nearly so abundant in this rc;gion r-s t'. rcre last Z -r. --c- of
the ey-- 1 r!in a-rhid (Rho-iabsi-hum '-ri u--ifoli'e Fitch) were rerortcd. as
quite -lentiful in -!'rts of Missouri. The v.L-nther on. ene-des pr-7-rcntly
cl ecl;-ed the out'Drcjz-u. ; strtecd hnatchin; in Delaware, central Illinois,
a.nd Ohio the last of March. The rnst-, 7.l'n arlhic ("^"stur--. .:r-. setari--e
Thos.) a-'-7are, in thrcratenini- nuirers in the Fort Vallry district of
Gcorgia a in southern Mississi-G"i -hrin::my. :-.is s-oecies f--s lso
recorded- at th-.t ti-to fro-' Nebroska an? ,t-h.


2. 'S3F52Z2Y BT2UIT I70L!

The ras-:'berry fruit v:or-i ('rytarus icnicolor Say) :as s-'/.at preva-
lent in the Hudson 2.iver Valiey and also in westernr n Ncv Yor'h. It wtas
quite injurious in south stern Michi-zan a-.nd the St. Paul district of
Minnesota.

"In 'Jashin;;ton State 1cctlb.s mere -juch :orc numerous this s-rin: than
for-;crlY ncar Puyrllu-), but the a-Ctual a ;ount of infostati-in in the
lo ;anbcrrics w.,s less than it has ei in thc past three years. .1n esti-
~ia1tb of approxi-mat ly 15 -mcr cant loss occurred in the cro- this sc:.zon.
The infestation in the rvm,-'berries vas erha --s ".ore general than ocfore,
but ovwing to the frct that the 7..larvae s 1do-- sticl- in the berries when
-icicd, little attention wias -,aid to the-i in this cro-p"1 1




"The only findings of the *.!e2itcrrmncan fruit fly (Ccratitis C- it ata
Viod.) in th`. continental Unitcl St-atcs d-arinr- the `mst fonrtecn nont.s
v.crc as follov.s: One inhc stA-. s,'ur ora;.i,:cecntaimn-_ f'ur Irvae a'ut
10 -ilcs v.cst of Orr-nlo, Fl,., -n :>->er 16, 1929; two- infsotcl sour
or'-..i cs cant,,ining; t. n larvac a-t Orland' on ,arch -,.1C-7; ndtwo -ae
in the coil under fallen ra-n-c a-t St. X' -ustine on July 26, 19.iK0.
M an-Khibe, fr',n 300 to ov r 600 inspectors havi ':-en searchi:- for infes-
trtion -.nd durin:"; the l ia"st -cr h-vc turned in for identification ov-or
600,000 s--ciiens, almost rll ofZ the=n :Atter- found in ri--w or C20cr-od
v ill p-- cultivated f raits," 2




1 '.r. J. B''ccr, 'i'hin 'tan Ai-,ric ituAi 7xA-cri-?.cnt gt'tio-..
2 Plant 2u-r:r-tirc ."n. Control A- ini-stratifon, L..S.D.A.









IThcre has benn about the usual prevalcnce of *the Mediterranean
fruit fly (Ceratitis ca)itatta *.Iied.),' in the Hsv-.iian Is lands,,as indi-
cated. especially by the wormy fruits of mano, *cuava, and rantya that
are allowed to become fully ripened. on the tree. The introduced
parasites continue about t~h same extent of control as has been reported
for the past several years, i.e., about 55 -er cent of the maCgots are
killed by them." 1


NLINYSTE :L\G2C T

"The only infestations of the orange -agot (AL-- sti-cS ludens Loew)
in the United States determined between A-ril, 1929, and the time of the
preparation of this ri-port in October, 1930, consisted of larvae found
in the fruit of three backyard. plantin-s in the city of Brownsville,,
Texas, on JTvember 19, 1929. The insect vas found to be '-resent, however,
on more than one hundred p-roperties -across the Lio G-rande in Matamoros,
Mexico. The infestations- on both sides of the river anpear at 1Present to
have been wiped out by the prompt :praying and cleran-up -easures which
were carried out during the followinig winter and spring'j, but infested
fruit from the interior of Mexico is still being sold on the-markets of
Matanoros." 2


CITeUS APHID

The green citrus na-phid (A-:his s-iroecola Patch) was 7ore abundant
on citrus in parts of Florida than it had been for several years. By
the last of Match the infestationh1 -rractically cleared u-, owinr
anpparently to very heavy rains. The infcst'tion started to build up0
again in central Florida during June. Daring June outbrea':s of rather
severe proportions of various other aL-hids were reported from many
tarts of the northern United States.


PAIiLATO0IA DAT: SCALE*

"The date-:'rowing areas in vbich the Parlatoria d.ate scale
(Parlatoria blancharg{ Targ.) is or has been -.resent are the Coachella
Valley and the Imncrial Valley of California, the Salt diver Valley and
the Yuma District of Arizona, and the vicinity of Lkredo, Texas. In
the Coachella Valley, during, the fiscal yc[:. 1929, 430 infested palms
were found on 27 p"rope'rties. In the yearr ended June 30, 1930, intensive
inspection and clean-up vorh wrs conducted on thnse sane ro-,erties, and
59 invested 'alms v-ero found on 12 of the 27 prop erties, the others
being a-p-parently free from infestation. 1Tr infestations Osevore enough
to be classed as "centers of s-read" have been found in this valley since
A:uust 19, 1929, Then the first intensive ins-7cction rns c-mrletcd. In


1 0. H. Swezey, Hawaiian Sugar Planters' Association.
2 Plant Quarantinc and Control Ad-inistr-tion, U. S. D. A.


-45,1-





-452-


the Imperial Valley, work 7.'ns confined cdurii-1 the fiscal y..r 1930 to the
southern part of the county, the only area in w.ich ir.festation had previ-
ouzslr 'been found. :Mnety-tvo infestec' palms wore discovered on ,?79
rr:,r-'rties as contrasted' with 1,115 infested palms ofoua n. 62' pro-erties
during' the previous year. In the vicinity of F.-. -:enix in c- Salt 2aver
Valley of Arizona, 27 infested 7-.1m-s were fond durim.7 the fiqc'-l year
on 5 pro-elties, ras contrasted: with 43 infested pal.s found on 12 pro~*: r-
ties in 1929. In the Yuma 'District, 8 infested. palms, all ornamental,
were found on 3 properties during the year. Commercial plantings in this
area wore kept under obsorvrtion but no scale was found in them. mhe
Parlatoria date scale has not been found in T2exas for a number of years." !1


CITROPHILUS ":::3U-

The situation with regard to the citrophilus mealybug (Pseudococcus
ghIani Green) in southern California was more favorable than it has been
any year since the insect became a major pest in that section of the
~tate. Only a very small percentage of the properties were reported as.
heavily infested.


OT=, CIchaUS I'SCTS ,

The dry weather that prevailed over parts of Florida was accom-
panied by decided increases in the populations of the Florida red scale
(Chryso .p>-lus ficus Ashm.), the purple scale (Lepi bsn-''?3 beckii :.ewm..),
and the citrus whitefly (Diale'urods citri Asim.). The reporter be-
lieved that the lack of humidity prevented the developm-;r.t of the onto-
moCenous funEi which normally check these pests.


..=ICA:. BA.LT B22TLE

Th'e Mexican bean beetle (3"ilachna corru'pta Muls.) was observed
emerginZ from hibernation in the Norfolk-C district of Virginia and in
Dclawarer during the first week in May. Duri:.,-- the last week in May and
the first two weeks in June the insect ws observed throw .;hout the
northern part of the territory knovrn to be infested.'f Thron ",out early
July, the insect was quite generally reported throughout the infested
territory, though infestations'in the northern part of its r: nrc did
not seem to be so serious as they were in 192). The hot, dry weather
that prevaile"'. over a large part of the western part of the 1'nited
'Statcs aprcarz to have been very destructive to this insect and over
much of the territory it practically disappeared as an economic factor.
In Mass',chusetts the insect was found during the year to 'be well dis-
tributed over the Connecticut River Valley district northward into
H-.p.shire County and has been found in a few instances in Fr-- -:lin
County. Otherwise, there was but little extension of the territory
known to be infested.


1 Plant quarantine a.i] Control Administration, U. S. D. A .


























































MEXI CAN BEA" BEETLE

Heavy dot! indicate
known uoread in 1930
















































































































*8












t..
0
*1









COLOIADO POTATO =2TLB


The first adult of the Colorado' jto'to bectlo (Leptinorsa d1ocor-
lineata Say) was observed near Yazoo City, Miss., onr March 20, and. in
the Char1eston district of South Carolim on April 5, anda at Columbus,
Mo., on April 21. The prolonge. d.rouht was reflected durinE May alowv-
the Atlantic seaboard by a rather unusul- abund:ace of this insect from
NTorth Carolina to New York. Durin- the third week in May this insect
was found in St. Johns Co Flty, 3la., this bein- the second record that
this insect has occurred -:3 far south in that State. During July the
insect was found in Canyon County, Idaho, a previously uninfested county.
A single s-eci-ie: wa--s collected in Davis County, Utah, this year. It
has not been observe! in Utah for several years.


V7GZT,1L7 '7.VIL

The ve:cet-ble weevil (Listro leres obliquns Gyll.) was first re-
corded this year on January 25 in Lawrence Co., Mi-s. At that ti-me it
Was doin- serious daa-..--o to turirps. Durin; the first half of February
considerable dameCe in hotbeds and coldfranes was reported! throuohput
the infested territory in Mississip-i4 and Louisiana. Reports of si-nilar
C.a-ia,e continued throu -hout !atch, April, and. May. As the season ad-
vanced, damage in the field bccarno more prevalent, bcin-l most serious
on tomatoes, turnips, and. carrots,

During the calendar year 1930 the vegetable vwevil ha1s been
found in 33 new counties and. parishes, and is no'r: Icnown to occur in
118 counties in four G-ulf -States. Missir.pi leads with 56 knov.n
infested. counties; Louisiana co-es second vwith 40 knlown infested
parishes; Alabama third with 19 infested counties, and. Florida fourth
with 3 counties k:n-owvn to be infestede*

The dis-persion of th. weevil northward. has not been so rapid
during the past year as the year before, but its snrcad eastward and
westward has bean fully as rapid as before. The weevil is now present
in at. least 2 parishes borderinF, on Texas, in --ichInd -'rish or just
one county south of the Arkansas line, and in Yalobusha county or two
counties from the. Tennessee line.

1 A few now wild host plants were found Iuringl the year, but with
one exception the infestation was lir'ht." 1

This insect is now kInown to occur in parts of ten counties in
the San Fr-,ncisco Bay district of Califor2ia.


1 Ir. It. Hi-h, Bure.ni "f ntr)-noln;y, U. S. D. A.










s;;i- POTATO ;z=E-JIL


"r"2Lc by the sweet-potato weevil (Cjig-.-;;. formicarius Fab.)T%?.s
been less this season in Mississippi and. Alabama than in -revious years,
and there has not been a sinCle report of a severe or heavy infestation.
Most of the far-.3 show only one or two hills infeste'!. >rir the year
only 38 infested. far-s were found in Mississippi ;7._ 2 in Alab.-.a, lo-
cated .s follows: 12 in Pearl liver County, 6 in H-'ncock County, 14 in
Harrison County and 6 in Jackson County, Mississip-Ai and 2 in Molile
County, Alabama. This is the lowest total number of infested farms re-
ported'for a year's work since this project was undrert'QCn. Ko weevils
have been found in George County, Mississippi, for three years.,, 1

IMPO.-TLED CAB3AG3 7,0`6.'O.

The irmported cabbage worm (Pieris raoae L.) v-.s much more aY~r.>nt
tVis year than usual in the "ast-Centrr7l -States, and in Jisconsin, Mis-
sissippi,and Utah, and the cabbage looper (Auto,-r?.Tnha br-assicae Uiley)
did very considerable damage in the goathern States from Texas eastward.
to Illinois, Vircinia, and the e^.trc0e southern part of the Eastern Shore
of Maryland.

The cabbgr'e webworn (Hellula undplis Fab.) bccam-e extre-mely abun-
dant in the Gulf Coast district of Mississippi., co7--letely destroying
several hundred acres of turnips.


POTATO TTJ3Z7 7302M4

The -potato tuber worm (P-t'orl-a operculella Zell.) 77ras i-.-L-s-rlly
prevalent on the Depo.rtment of A6'riculture r:.rm at Arlir:ton, Va., this
year and ailso on the 1-stern Shore of Maryl-.nl anda Virginia. A rerprt of
this insect wa-s received from Frederick County, Y^., being the first rep-ort
fro-. the western part of the Str-te. The 1v.lant leaf miner -(P. -lochinella
Zell.) a dl'-;--.ly related species can-sed a 40 -rr cent loss of the to-.ato
crop in Scan Die,,o County, Calif., this year. :`is insect is present in
Los Anceles and Or?.nje Counties but it is not doi-in; so much d-m.*e there.


C.. -..7- APHID

Daring tho first part of February the cab' i: d (:re:icormT.e
brassicae L.) ws observed in unusual numbers in the Salt River Valley
of Arizona. Du.irin; the first week of March it did consi er'ble d:-.~?-e in
the Lower Rio Grr-nde Valley of TL::?.s. Z-D'.rly in Marc'.. it became cxtrc-cly
abuind sures. As thu s- ring advanced it occu-^rrL;1- in such numbers in the truck-
growin.- districtt of Vir-i:":iA. -, to cut .own the yield of se-. kale about
50 -"r cent. Later in the -'"* >n it was re-DrterL frrv the entire :.orthern


1 K. L. Coc':'. 3- ireau of Ento-ology, U. S. D. A.











nart'of the Enstern Unite". States from Virginia rn-, M'.rKnd westvwrird to
the Dakotas and. ITc-br.. It ca sed. consid'erable comnimorcial damace in
Virginia, :>ryland., Illinois, and Wisco nsin.


Tu::IF APHID

The turnip aprlida (Rhrn ~gj-i^^-r -pseuaobr-ass 1ce Davis) was unusu-
ally abundant in the truckiInI'- d1i trict of Virginia and. in a snail district
neor Phoenix, .Arizona, during lrte February. This insect seriously
injured turnips during March in Louisianza and. southern Mississippi. It
was olso reported, during the li tt er' half of June, from NTebraska. During
later June it seriousl- dmnaged turnip in arts of Ohio :.nd kohlrabi and
radishes during May in the norfolk district of Virginia.


PEA APHID

Ine pea aphid. (11noi o pisi. 171t.) pprcred the -iddle of February,
which is about two month, earlier ti-n ussuaiil in the G-ai osville district
of Florida.L It. start -xd' to in:fest al-'alfa in Arizo_ --L in Feboriary and peas
in a trucking district' of Vir-ini: late in March. It seriously damaged
red clover and co peas in,Illinois in June. It apnreared in large-numbers
by the third week in A- ri. in Kansas, ";:y the third. week in 1.i-, s seri-
ously injuring allfalfa in Kentucky, and by this time it was worse on the
Eastern Shore of Ma:yland than it has becn for many years. It vas found
in many alfalfa and. -ea fields during late May and early Jane in Minnesota
and wps found heavily infesting alfalfa th1e last half of June in 7Tbraska.
In late May it was collected- on cannery cpas in Ohio. TLiL irSct ap-
peared in large numbers in t'he i-uportant p a-canning district of Wisconsin
during late June but by a co-mbi.-i.tion of the hot weather of the su:-ner and
a very unusual number of p-ra.:.ites and rredtors it is. believed to have
been practically elimrinatedl d-uring the latter r'\rt of the summer. This
species was also reportcd- as seriously damagirg alfalfa near Fresno, Calif.,
and in Utah and ITevala.


SQUASH BUG

The .-.-qu1z1h bug ( tristja DeG.) did very considerable dam-age
in large cantalou-pe nd. esq ias ?.]?ntinPs in the S&n F-r-.- .,do Valley, Calif.
It r.-ts, also r'-ortcl in unusual abun1ance in the Chicago tracking district
of Illinois, whcre it hns Kt beon a -re'st for the last founr years. Injury
w".3 also r:-ortod from si.athern Nc-w Yok,' Indiac,, north( stern Iowa,
cenc.r-?. Missouri, and. eoast-rn r. i( snuthcrn '--braska. 2h7e inszoct wa-
reported for the fIirs". time from the State of Idalho this year, the specimen
on w-iici t iis rcvrt was 7;..Lsed was collectWd in 1939.









BUG
-iL~j- =u .. wb

The harlequin bug (Mi rgantira histrionic: a Hahn) ":eg,?.r. emcr-*Ir.& in
rather large numbers during t'e second week in e-nril iln A1'.. Thisn
insect beca-710 unusually prevalent from Mississippi castwar:_ to the
Carolinas. This condition rnrevniled throughout the re- .ii'or of the
sui'mcr and well into fall, when serious 0-anae-c wt- done to c^-j'i2-e r-nd
turniD in Missouri. Observations in the Norfolk district of a
indicate that even this far north this insect does not trJly hiternate
but cumes out whenever the te:.peratare rises during t:\e winter months.




"The 'beet lcaflio-'-er (Eutettix tenellus >3aker) did. serious &
to 'ceots in southern I o, the da-iame .ecreasin- in severity towe-ri
the eastern rart of the State, where little injury v--s ex-.jricnced.
fhite beans in the western part of the Idaho "bean territory and in
western Jashiniton also suffered. Some severe injury to beets occurred
throughout central Utah and western Colorado, where to7Lato yields were
also seriously affected. A variety of truck crops in western Orcgon
were injured in varying degrees. Injury in California was relatively
slight, although some co-miercinl losses were -,--..rent. Po.iilati:r's of
the lbeet leafhopper in New Mexico and southern Colorado were higher
than in either of the past two years. Late reports indicate large pop-
ulations in the desert brcci- grounds in Utah and Idaho." 1

SEED CCORT MAGGOT


The scdc--rn -y--'ot (Irleryio cilicrura 2ond.) i.i-'i-I 'ecp-me, de-
structive to potato si7.1. pieces o~the early -lmted crop r v'. to bean.s
in the coastal district of the Carolinas a.n' souther:: Virgi-:ia. Th is
accompanied delayed :-ormin-ation owin< to cold wierthI,-. reportss of
similar tvvuelr vnre rec 'ivod fro-i -.an-y -ointc. in the Last-Conttral,
'Jest-Ccat'al, and:'J.th-Cc'tral `Lotro 7urirg y and early June. 7--is
insect also did c'J'1 Cero'l. dt>'"ia 1. ectirv out Tmelon seeds in Utal:
durin- a period of cool, cloviy weather.


ONIO1 T7I`FS

ThJ-inrt -idsuizmer considerable 0'.- -e by the onion thripu (Th'r-s
tacL.) '--:as .-.rted i'r- :- York, Virginia, 17orth Car'.lina, I.i
Illinois, Iov:a, Mississippi, and Utah.


1 P. Y. Arinr.id, Bureau of Znto--m-logy, U.S.D.A.


-45G



































































PIVK BOLL WORM

Area icr reggulht't
(!..t actual distribution)







BOLL L


O1dwing to hot and dry veathcr oxtp--r.,: throughout practically
the entire 7rwing; season in all States west of Georgia, the population
of the boll weevil (Kathonom:us grarndis 3oh.) *,-as held below the point
of serious darage to the 1930 cotton crop except in sosie small local
arc'-s and in about t-elve counties in extreme southern Texas, including,
the Rio Gra~ide Valley, where injury -,-:-,ore than usual. In Georgia the
infestation was. general and caused -nore or less' damage except in the
northwest district. In Yorth Carolina weev-ils were fairly abundant,
necessitating the use of control -measures in most districts but were not
so numerous as in 19'9 owin; to the dry, hot weather. In South Carolina
infestation in the northern district was checked. by hot, dlry weather,
but w*..s sufficiently serious to warrant the use of c'.ntrol measures to a
greater extent than in the season of 1929, while in the Coastal Plain
district a high degree of infestation dovelorod early and continued to
increase as the season progressed, requiring the use of control measures
in most counties in that area." 1,


PIMK 3OLL 'JOIMN

"In the .su-rry for 1929 as published in Volune 9, Tmmber 10, of
the Insect Pest Survey Bulletin, the discovery of larvae of the pink boll
worm (Pe:ti:.-Ku--ra iossvTiclla Sauni.) in the Salt River Valley near Mesa,
Ariz., was reported. The intensive ia-s-oection which followed this dis-
covery disclose d infestation in a considerable number of fields in this -
general vicinity. Following the delimitation of the infested. area, two
non-cotton zones were established. T7-ese zones included some 40,000
acres of cotton. One of these zones at its greatest length anO- ;-reatest
width is 16 miles and includes the towns of Mesa, Chandler, and Gilbert.
The other zone is 5 miles square and is located northwest of the village
of Snrc .tonM. 17o cotton was prodducod -in these areas during the sunmer of
1930. ..Beginaning with the crop of this year a new method has been em-
ployed in the scoutingfa?": inspection work doie on account of the pink
boll worm. A machine has been devised W.ich serves to very greatly
reduce the volume of gin trash from the first cleaner .nd has made it
possible to examine a considecr-. le portion of the first cleaner trash
from --ins throau.-h.Out the area re u1l>ted on accoait of this insect. Gin
trash machines have also b-eon o-peratcd. in a few localities outside of
the related area. fhie insnect.ions h `ve failed. to -disclose the presence
of the rink boll worm at any point outside of the regulated area. Like-
w;.se, the intensive. inspections have failed to reveal the presence of the
pi-il: boll worm in certain counties of the Wqstern 3xtensio-i, (western end
of cotton belt)41vicre worms we'e; found during 1927. F-ilure to find
infestation in those parts of the regulated area included. in Martin,
G-la.i.scjck, fawson, Iow~rJ, ar_'l Borden Coumtics, and in a mall part of
the northeastern portion of MidlrAnd. County, has led to the amnon-ent of
the quarantine w!-.ich removed these areas from the restrictions. The



1 G. A. Maloney, Bureau of Entomology, U. S. D. A.









in'-jefc tions hgve shown the continued vilsoe-ncc of the pin: boll wo-m in
all other cotton growin- Areas to be corfine to the re 7alated area. The
infectation in many of thcsr areas is very li-ht, ::2 it is prob'ble that
i n. ft[' ion would not have b-en discover .d in all areas old mbthodr
o0 inr-pection. Lig:ht infestations ha7e likewise been foz-'.i in a number
0o f iits in Arizona outside of the r.on-cotto.n zone, These points are,
vJ th two receptions, all vitin the r tricted zone rich sj roun.s the
n,n-cotton zone. The infectations within the restricted zone are lc:at-:-i
vwithin the vicinity of Lohi anJd GoodyNar. A li-ht infestation was also
d-1 vvered about 3 -mils southwest of and onel sr--cimcn Was f-un?-
nr.2thwest of Fiocnix, in the vicinity of the town of Glc'-le. A ver.-
licht infestation has lilccv'iso been disclosorl in the ne-7 cotton devel:---Lnnt
in the vicinity of Ceolih-e. nhe infestations in this area h..ve so far
>ceen traced to five fields included witin a crescent-s:'-ed area *.rxi-
mately 5 miles long. Although the new fi-.\.:i.--I in Ari'ona involved consi er-
able additional area, a comparatively few specimens have -cer found even
by the intensive inspections eloyed. A rather hc'avyv i-lCcst-tion wao
found on a desert ranch ahout 5 lil s -ast of the eastt-rnmost limit of the
cultivated area in the Salt IJiver --illey. The production of cotton on
.is isolated ranch, which contains ary-roxi-atcly 27 acrca zf cotton, v:as
unlo-iown iujntil this autu7mn." 1


P:lJODIIC CICADA

3rood IV of the -ncriodical cicada (Tibicsa:e:n.:.cim L. r
during 1930 in the following couxntics:

IO"A

Adaiir, Adama, Anrpanoosc, Cass, Clarce, Davis, 7Decatur, Fr.-7rt, Guthrie,
Lucas, Mills, Monroe, Montgo-'cry, PFae, S'n,-ol1, Shelby, :r-rlor, Union,
Van Lren, Vlayr-e.

KACSA

Allen, Anderson, Atc, ison, 3ourbon, 2rown, butlerr, Chase, Chautauqua,
Cherok-ee, Clay, Coffey,. Cowley, Dic-in.-,n, D )nihan, Dou:;lh3, El', Fra-din,
&c;ary, Greenwood, Jackson, Je'fcrson, JCWnobc, Lobotte, .pavenworth, Linn,
Lyon, Marion, MK-rshall, Miami, Mont-o-'cwry, ::o-ali, Osaze, Fot'-ivwa-
tomie, Zliloy, Saline, SeSu-icm, Shav-iee, 3uencr, .'...bunsee, 17ilson, "..'Dodson,
Viyondotte.

MIS S0U71

Andrevw", Atchison, carton, Yates, 3enton, Dollin--cr, (ne.-'i-ps a 13-year
colony), 30oo-1o, 3uchanan, Cml'*'ll, Carr-)ll, Cass, Ccdzr, Chcriton, Clark,
Clay, Clinton, Cole, Davicss, lb, :-rc.bl Gascnondnel, c!;-.try, 1.2-rrison,
Henry, 7iolt, Jr,-c'-,,-:n, en o ,;: -)x, L-ifa-7-tte,. Linn, Livi- -sto:-., "*r~n


1 Plant q tarantine , Control A ---istration, U. S. D. A .










sEEflO^'tXL CYCADA


Known distribution of Brood TV u-c t.-, ?xjd including its wmear~nce in 19,1.


Black dots indicate lC records.


* 6 0
Cue


*


*
.0*


0 0


0 0


I,4
-q


I -
a -. -.




- 455S


Mercer, IHod-.W.n.y, 'ettis, Pike, Platte, P'utnam, 2alls, _-lay, St.Clair,
Saline, Schuyler, Shelby, Vernon, 'Jorth.

NIT2?ASKA

Cass, Douglas, Johnson, ITemaha, Otoe, F:.vnce, dichardson, Sarpy.

OKLANHOMA

Carter, Comanche, Craig, Noble, Os-t'C, Pawnee, Payne, Pott-i.'ato'-ie,
Roger, Stephens, Tulsa.

TEXAS

Fannin.


.GYPSY MOTH

"The continued intensive inspection of the area in Nei: Jersey where
cooperative eradication work has been carried on by the State and the
Federal Government aPgainst the gymsy moth (Forthetria. dismar L.) since
1920 failed to reveal the -nrescnce of this insect during 1930. The close
examination which is being given to areas formerly Iknown to be infested
is progressing satisfactorily although considerable work i'emains to be
done tb insure complete eradication of the insect in that State. A
*single live eggcluster was found on a tree at Interlaken, 1. J., in
March, which was shipped to that point. from Fioslyn, Long Island, N. Y.
Interlaken-is not located in the area where intensive work is being done.
The eggcluster was treated and careful scouting for a considerable dis-
tance around the locality where the tree was planted failed to disclose
any additional infestation. As a precaution, the area and surroundings
we're thorouglhly sprayed in June Lnd no trace of the insect has been
founidr The number of infested locations in the barrier zone, an area
approximately 30 -niles wide, extending from the Canadian border to Long
Island Sound along the 1kw n-7land States and !l.:w York boundaries, was
greater than last year. Most of the infestations were located In the
section of the zone in south-western Massachusetts, northwestern Con-
necticut, and the territory adjoining it in New York State. A large
proportion vere found in voodland areas. Clean-un and exterminative
treatment was ap-p-lied to all the infestations in order to destroy the
insect in these localities. Since the barrier zone wr.s established
in 1923 in cooperation with the States concerned, no serious spread to
points beyond this protective area has been reported. At the beginning
of the year an infestation of considerable extent was found on Long
IslanC., NO Ye, centering at one of the nurseries at Roslyn. Vigorous
measures were taken at once I'y the authorities of the State of NIew York
and the F-deral ^7overnm-crit to exter-'in-ite this infestation. It was
necessary to trace a large number of shi-ments of nursery stock which
had been sent from the infested area on Long Island'to various points
to be sure that the insect had not become established in this way. As
a result of this tracing, a very small number of live eggclusters were
found at three points on Long Island and at one point in Hew Jersey. 2y







-460-


reason of t'e intensive cxter-Anativc :'eas'rez aple by Sate aflnd
iodert-l agencies, it is believed that all of ->c-c -inor incipient in-
festations h'-ve been era-dicated. Conrjitions in the gencrally infestcl
central and eastern -rts of the nr. % in 17ow 2n.l. were i-:v. d over
the previous year. Defoliation, as co *.:ed wit.. the previous yer,
wans considerably redcei althou-jh la-ro arcps were defoliated. in mnany
sections' of the territory." 1


SATDT :CCH

"There we-s ar-rcciablc s-rcaI by the satin moth (Stilno-nti-. -.licis
L.) in the l'ew >lngl'-nd arca dcurinC- 1930, beyond. the -reviously '=-,v._. H.-nits
of infestation. This onlarrmncnt of the area occurred. nrinci'-ally in -rrrts
of the following counties: 'Nev Haven, iddlesox, and Hartford Counties,
Conn.; Harmpshire -and 2erhsir Counties, Mass.; .7indsor ard Ora-: c Counties,
Vt.; Sullivan and Grafton Counties, N. H.; and Oxford, Fra2':hin, So-.'rset,
risc taqais, Fenobscot, and ?1ashington Counties, Me. This nevw area,
together with unsurvey.ed territory would. e-r-'ce -'--roxi-.iately 9,000
square niles in addition to .rca --reviously quaranntined. i insect rp.s
re-orted for the first ti-ie lact year as d.ofoiatirj poplar trc:s in wood-
land] in New 7niland. Daring 1930 several defoliated areas were re-orted
in ,.-oodlends located between Manchester and Concord, :7. H., and also in
the vicinity of Sceter, I. H. In ,-oneral the infestation 'y this insect
in :7-wv: ngiando appears to be increasing in density in certain districts
and is steadily expandinC the area rhich it occupies. Th.s insect was
re orted for the first ti-ne in Tev> 73runswick and Ti7va Scotia by assistants
of the Do-iinion Zrtomolopist. A number of locations extEndi-:w, roughly from
Yarmouth to An.-arolio loyal, Nova Scotia, were found,. to-ether with a
soTmewhat larz-er nuorber in New :3runsv:icl, inclurinr_ one at St. Andrew v`ich
is located. on the international line ojuth of Calais, MC., at -'rcoericton
and. Moncton, together with a number of towns surroumdinc the latter city." I


B-2 PIT-TAIL MOTH

tT.e brown-tAl mnoth (:T,--_v. T" crr'c."i r Don.) has not been seriously
a 'nLant except in southern iahire in so-ie isolated areas in
Maine and eastern Massachusctts. Severe defoliation occurred. in many
districts of southern Now Ha-p-,shire, -prticularly fro-i Concord. south;ward.,
including territory ?ast of the Merri-.c 2iver a& extending nearly to
the seacoast. Sm..J1 defoliated a-rt-s were also recorded. in trvwnc i=ned.i-
ately west of the river, but in other parts of the irnfeste2 territory t`e
infestation was no -qore abundant t' an aial. In most of the resier.tial
sections, -particularly in Massacusetts, the vintering webs are rc-ovcd
'rP-aily and burned by the local authorities." 1


1 Plant Quarantine and Control A'i-1stration, U. S. D. A.


















































c
0


0 C

- IU









0 c

cc







.0.4
S0 0









I-







z
DJi







0
I-?3-






S17"Cs 7


The severe infestation 'by the spruce badwormn (H:irTmolo.',a funiferrana
Clem.) in the Shoshone l7.tional Forest in VIyo-ninfl; ha,,s continued this year.
This infesttion has "been under Y'ay since 1922. Thu lar&oC centers of
infestation of the s'-.ruce >u7.';'.r- in central Idaho that have 'beer. so
destructive durinC the -ast few years are reported as bcinC materially
reduced and no lon 'er in an ep-idoeic status. -he outbreak which develope-J.
on the Cocur d.Alcne forcot in 1928 continues its decstuctiveaess. Dy
.iisurner it developed that this insect was vcr:,' nrovalent over Michigan
and -Wisconsin. In several arts of the latter State the outbreaks were
serious.


srauc2 :z:DL "

J117ny this s-ring the work of thc s-;ruce needle -iner (D2rinotia
nanana Treit.) was. -*- .1n very noticeable on s-)r:uce (red an" white) -long
the seacoast fro- Orrts Island t- Thaauil,. Maine, aaTroxi-nately 25 riles.
The heaviest, infeztations '.er-'ed.to cover s-nall areas, so-,iti-ios less than.
an acre in extcPt. 7.There it was/a11- 7-lecntiful the dried -iincd needles
clinging to the tvwi-s Vade the trees very utsi'fttly. Defoliation in the
.heaviest infestation ranked fro.-n 35 to 75 --or cent. In all the infsta-
tions visited. the conditions seeded to indicate that the infestation liad
not been of longj sta- .ding. This insect, wvas .also rmportcd as unusually
abnindant and destructive in northern Illinois and southern *Jisconsin." 1


sxrlL:) TI~OMHu:TT

The saddled --ro-ninent (-:t-:ro -m--' .uttivitta a--eared in
outbreak. num.bers in the 1kv. 2n~lcad States v:here it defoliated 1arre areas
of beech and --,iale. This insect was acco-Lanied by thp c;reen-striped
'nrcln worm (Anisota rubicund- aab.) in '::'.sso-chusetts :?nd. southern Ver-nont.


3LM T2~L. 32T3I2

T:he elm-i leaf b>etle (G-alcrucella xanthoreacna Schrari:) asain
appeared in outbreak1-' nu-abers throu :hout Tew Ea-::land and. southeastern New
York State; rather -cv.re outbroak-3s were rc-orted from -oints in North
Carolina, Ohio, and Kentuclky. It was olso observed to be numerous at
Corvallis, Oroeon, and is beinj a -'st of major im-ortance in the .:r'at
interior valleys of California.


ARK S33TL3S

Plat is believed. to be one of the largest outbrr'. of the southern
pine beetle (Deadroctonus frontalis Zim-o.) was -e-'rted from the S-moky
Mountain Yational Thrk in 1:orth Carolina and' Tcn=asscc.

1 Forest Insect Investigations, Lurcau of 2nto-molory, U. S. D. A.







-432-


"There v-[-. a niotable decrease in the activity of t:e western 'rne
b etle (Dendr-ctonus brevico-nis Lcc.) in th.ie western yellow -ine stands
of Ore on and. WJashin;-ton d2uae to nore favor' 'lerowt'. conditions 'r-
the -iast season. The i-ideAic in the "od-oc >'Tational .->rest, California,
su si(edd to a point low r than any reached. _7arin- the last six 'uxrs.
the period. while this decline was in nro-rjss in northern Cali-
fornia an eni-f'mic developedO in the Southern Sierras in certain water-
shleds of the Seqaoia National Par',-- and' in the northern part of the Seq.oia
N .tional Forest and in Coulter pine near Julian, on the Cleveland :.ti-'nal
For o t. This occurred in a very linited. belt of ti-iber and. the infestation
vias evti7matcd to run as high as 35 er cent of the total rum.:er of trees.,

"The -mountain pine beetle (Dendro ctonus -nonticolae Hon':.) continues
to s'ee- thro-.ugh the lode'lole and white -'--ine stanids of the Pacific
:-.rthwest, central I n..-v, and. ?7e,tern Mfont: -na, and -r-*cticdlly all of the
susceptible trees rare doomed. The epidemic has vaned in -.a;y places,
having already killed. over 90 -er cont of the 7,ature stands. Th- :cst
active e-idoemics re-orted tare now located. on the Fr^-mont, Deschutes, and
aallovwa Kational Forests in "Vashinrton, and near the Coeur d'Alene, KEai'rs.,
V'end Oreille, and Koot--n"-i Kationo-l Forest5 and the Glacier :-.tional Park.
The e-iJdemic which has been active in Crater LK1-. I.tional Park duerin- the
Past 15 years is now nearly over."

"T'-e cypress bark beetle (:mloeosinus crit-.t Lee.) has caused
nore than the usual amount of dauoage to planted Monterey, Arizona,, 2fnl
Lawson cypresses in central and. southern California, and. in 2Iri'ona.
-. :e.'ous hed<-e and windbrealk trees have bE cr killed by the attack, nrnd
ornamental trees have been injured. by the twig-pruning- habit. In 7any
infestations in the San Francisco _ay district F. Quyressi :--:'. is
associated Y.ith P. cristatus." 1


SCOTCH INE L::CA::I,

The Scotch *-ino locanium (Toumeydila l.u Zi.' ic -n P. & McD.), a pest
which has never been previously recorded as )oine; any extensive injury in
the forests of lisconsin, ap-carcO in very d.--.-.tr'uzctive numbers on Jack pin-e
in many sections of the State.


CYCLA1-12= MIT137

The cyclamen mite (Thr32n.:-. -r^11 i ':s Danls) attr-.cted consideralle
attention in the coastal arca of thc Sar- Francisco --7: di.-t.rict in Cali-
fornia late in the se-nirer b S.riously infestinr; str-wberries.


A CIC-IDA

One of the most striking devolopmncnts of the year w'>s the discovery

1 Forest Insect Inv sti'ations, Bureau of i' ?..lo;y, U. S. D. A.







of a cicada (Tibicen deavisi S. & G.) *c:iously dama -imn,- larL-e commercial
r1antir-s of the fern asparagus (Asnara -us ol-jmosus) in -all 2each, Fla.
The 1a-nme was occasioned aby the feeding of the cicada ny-imhs on the roots
of ths. plants. Adults began nmergn3 in large numbers durin. early
Septcm-.ber and they oviposited very freely in the lath shade which is used
in thcse ferne-ries and. also in i-ny other available objects.


.A I3G-i0 'JG

A very un-Usual type of injury'was observed in Scptember in the
Norfolk district of Virginia. A s-nall black burrower bug E
u _leri Sign.) was attacldnng newly sprouted spinach, b lling the young
plants before they pushed throu-h the soil. They were so numerous in one
field that 43 acres had to be resown.


U:ITLI2n S-::u::'

One of the neriodical outbrsa2:;: of the white-lined sphinx (Celerio
1ine-t- Fab.) occurred this ve.r in -,arts of *Jyo:.in..;, ITevada, and the Lake
Tahoe district, of California. Z-irmious numbers of the caterpillars
crawling over the ground attracted considerable attention. It v--s also
reported in unusual numbers fromn North Dakota. Very little damage, however,
was done by these insects.


A*LGZ:'TI1T ANT --

The Argentine ant (Irido-"y=aex hu]ilis Mq-Zr ) continued to be one
of the -lost annoying: and injurious insect pests occurring in Mississippi.
Early in the season we received records of the finding of this insect at
S-artansburg, S. C., and in three of the -munici-ral greenliouses in Jalti-nore,
Md.


A SCA:LLAU D BE3TLE

A scarabaeid beetle (I:ol bomceroso bruneri D. McC.) seriously da.a. 1ed
golf ,reens near Lincoln, NTebr., early in Septe-nber. The daima-'e v.-s very
similar to that occasioned. by vwhite grus.


A CTUAC17LITTID

The findlino of Cleonus nicer Scop. in Yates County, 'T. Y., again this
year seems to indicate that this S'-ro--ln pest is established. in that
State. In 2arope this inslect is nwn as a sugar-bcet p --st,







-4.C4-


"One of our inspectors J. F. KeouGh, 7ho is loc'.tee at ;."illim-- tic,
Conn., re-orts th'-)t in Sep-temn'ber, l'OV he ob-served I very outbreak
of th:10 v- 1-i.'igstick, (Dia-v--eromcra fe-orata Say.) in woor.1<.I in 7o1utown,
Conn., over n. hundred. acres bein infested.. The -_r-'6vth consisted. of 70
-er cent red oaJ, 15 per cent w-ite oak and t.e balance waz a mixture of
white pine, ,itch pine and -rny "birch. The heaviest fec-iinr v: s on the
red oak with a smaller amount on the white o;?k and. some on the pitch 71ine.
1-o feedin was obsErved. on white -ine. Defoliation could be observed.
over the entire area and. over about 26 acres there Wr'a fro-n 15 to 0 ner
cen.t Kefoliation." 1


Corrections.

Line 1, para;ranh 2, -nage 257, "pale western cutworm" should r-:-i
"varie-Ited cutwom."

CMIlcc:- r-. liberta G-cr. -,as -iven on 429 was letter detEr--.ir.ed
by 'J. S. Fisher as C. v--jrrianna Lee.

The species of Chrysobothris referred to on raues 27 ani 112-113
a,3 subsequently described by W7. S. Fisher as C. fra,-arlae.

Thie cicada, Dicero-rocta viridifascia 171k. reported on -_es 259
and 309-.310 was later determined as Tibicen davisi S. & G-.





Insect conditions in Hawaii durin; 1950,reported. by 0. S..zey,
Hawaiian Si4'ar zi .nters Association:


1 LO7 FLY

Apzrently thc -.elon fly (>ac trocera c ':irbi~re Coq.) has been pretty
well controlled by the introduced. -arasite O-aius fletcheri Silv., for the
crop of water-elons raised v.-, the largest for a lon- ti-ne, a* the -ielons
were on the market for the longest se)Fn -- five or six months. Some
cantaloupes were also raised this year.


ASI.ATIOC =ETLE

7Tere has been sli-ht u-rend of the c-ne root rub :e..-nd the li-ited
district previously infested. In -lost of the district the grubs (Anzmal a


1 F":rest Insect Investi-,.tions, 1 n of :.tomolo7y, U. S. De A.











orientalis '2atcrrh.) ..'G bc-en scarce this ye-r and of' no injir:, to the
cane. H.Iowever, in one plantation the grubs u:ero found to have increased.
sufficiently to cause a significant redu-ction in cane at harvest time.
Scolie maeilao Ashm., which controls this 'beetle in -noL-t of the infested.
area, had filed to do so hero, )ut after the cane was harvested Scolia
gained access to the field an! in due time had Axnomala under control again.


-DSE' -777-L3 Z

The rose 'beetle (Adoretus cnicus BurIr.) continues to be a general
garden nest, on account of the extensive feeding of the beetles on the
leaves of many kinds of ornamentals and garden plants. Scolia manila
Aslim. parasitizes the gmrubs to some extent but not sufficiently. Attempts
in the past several years to introduce additional parasites from the Orient
for Adoretus have failed.


SUG-A CA2^ \ZT7IL POR -I L

The status of the sugarcane weevil borer (Mhabdocnemis obscura
Boisd.) has remained about the same as for the past several years, it
being satisfactorily controlled by the New Guinea tachinid Ceromasia
s-oheronhori Vill. in the majority of the plantations. However, the
borer still does considerable da7.m-"'e in some plantations, especially where
mature cane stands for several -nonths before being harvested,` and the
borer is working in the canes that, are covered by the accumulation of
trash so the parasites do not have access to them. This damage is to be
obviated by earlier harvesting of such fields. A recently introduced
variety has been observed in several instances to be less attackeLd by
borers than some other varieties growing with it.


MAITGO WEEVIL

Examination of 50 mango seeds showed 80 per cent containing the'
mango weevil (Crypto rhynchus I.-rTni feraie Fab.). Their presence in the
sre.s had not impaired the "angoes for eating, but the seeds were s-0oiled
for prop-aa'tion purposes.


SU;ARCA:72 LEU,:OFP1R,

The suarcane leafhopcer (Perkinsiella s".ccWar ici J ir':.) has been
satisfactorily controlled by, its natural enemies almost entirely througjh-
out the Islands. There was an outbreak on one plantation in which, in a
field. of about 100 acres, the leafhon-oers increased to injurious numbers
beforo being checked by their enemies. The most important enemy,
Cyrtorhinus mundulus Breddin, soon increased sufficiently to check the
outbreak, and in three months the leafhop-prs had entirely disapoearcd
without serious dam." -:e to the cane.


-465-










-466-


HIiBISCTTS 1J15CT.3

There have been heavy infegttions of'some hibiscvs h.c~es by the
hibiscus whitefly (Aleyrodes hibisci Kot.), causing consiccrr,.ble : 1.-- smutty
a~p-qrrance. The whiteflies were considerably 7: r. .ni tized by Zr.-.irsia sp.-
Hibiscus hedges are a:orend, more beco-ninf infested with Hcmic?.ic r. z'ds
minor 1Mi&:., which results in the derth of the infested- plants unless
given prompt attention.


&GREN SCLE

The green scale (C6ccus viridis Green) often badly infests Ixora
and some other ornamentals. Several parasites work on it but without any
beneficial control. Two ladyboetles, j= lutipes Mu4l., and Cr;.t'l;-,e-as
montrouzieri Muls., often fee(- on the -recn scalf quite abl.2tly.


GC-'':T LOOPZR

The garden loo-per (Pla-:' chalcites Esp.) is n-rv well controlled
in Honolulu by the poa-rasite Litom-tix floridana Ashin., first !mown to
have become established here in February, 1929.


RICE BOR;

Rice has yielded. much bcttrr than any time since the rice borer
(Chilo simplex Butl.) was first 'known hero and. caused such heavy losses
in the spring crop of 1928. This has apparently been the result of the
establishment of three parasites on the rice borer from the Orient; an egg
'parasite, Trichc. :r-ma ** nic'"-r.- Aslim., and two larval r'.rasites,
Am,-'sT- cchilonis Vier. and Sioctcs chilonis C-sh.


CoCo0. I2a. F RO LL. -E

Coconut leaves c ve been rem.-Trkcibly free from the- coconut leaf r-.ller
(Omiodesolackhnrri F'ttl.) this ycr, so they are mostly in rect condi-
tion as compar'-d with theo asurl r--.- d anDTcarace. This is u-i1oubte. ily due
to several pa--rasites, chiefly Cr' >.tu, hCniOac Vier.


SUGARCAITZ L717 :-LL:1

There were only two or three slight outbreaks of the u-,-:arcnc leaf
roller (Ornio'des acce- ta But1l.) oi:scrved.. A-r-irently the several intr:DI-cedd
p- rasitos have lcept it v.\ll controlled.










C-:I:.S c-RAESH:OPF2R

The Chincsc EraoshoDjpor (Qxya chirTesis T b.) hrs beorn sprc..-Iirn,?
rapidly on tho Isln;ad of :,rTv.aii of rcce-t y-crs. It has I'c,7 Iowni for
a long timo on Oah'- nnd Kaicai, '>r- thcre hp'vc bccn occ-7sibnpl fields
considerably at tacked., though not caus32n- 7 expensive Cl.Ti."'C. The feed-
in- or. crine (causing very raged leaves) lias becn chiefly alon-: gr- Z.-I.--
ro adsides -,nd borders of fields.




uNIVERSITY OF FLORIDA
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