The Insect pest survey bulletin

THE INSECT PEST SURVEY

BULLETIN


Volume 17 November 1, 1937 Number 9


BUREAU OF

ENTOMOLOGY AND PLANT QUARANTINE

UNITED STATES

DEPARTMENT OF AGRICULTURE

AND

THE STATE ENTOMOLOGICAL

AGENCIES COOPERATING



I .ARY
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Digitized by the Internet Archive
in 2013










http://archive.org/details/insectl1937no9










I N S E C.T P E S T 8 U: *R V E Y BU L L E T I N


Vol. 17 November 1,. 1937 No. 9



THE- ..CIS? TORTAiT RECORDS 'QR OCTOBER

Grasshopper egg surveys have been started in most of the States con-
cerned in the great outbreak, of the'"past' sum.irr. ;Eggs are' being, found in
the anticipated ibun'dance. Egg: Layinglhas'.been somawhai delayd 'and con-
tinues in-the southernpqrt. of the territoryy '

An e'gg surTvey of the j.ormon cricket in Nevada has been completed. Eggs
are very abuhdaht in the north, diminishing in numbers southward. A report
from Montana indicates that the insect has spread from focal areas scattered
over much of the State.
\
\
The hessian fly was reported as occurring in some early seeded wheat in
Missouri and in southeastern Kcnsas.

Owing to dry, warm weather favorable to chinch bug development, the in-
sect built up populations rapidly and has entered hibernation quarters in
great abundance in Illinois and Kansas.

The volvetboan c':terpillar is abundant and destructive in Florida. It
was also reported from Louisiana.

The apple mag-ot showed up in unexpected abundance in an orchard in
central West Virginia where it was reported 10 years ago.

The grape berry moth w-s reported in unusual abundance along Lake Erie
in Ohio and in southwestern Michigan.

Infestations of the walnut husk fly have been found in Orange County,
Calif., extending the infested territory somewhat to the west.

The California red scale is causing serious injury to citrus in the
southern tip of Texas. The scale was also reported in great lunondace from
Los Angeles County, Calif.

The vegetable weevil is coming out of aestivation and attacking truck
crops in the Gulf States.

The northern mole cricket was reported to be very abundant in Massachu-






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setts, where it severely damaged potato tubers. This damage seems to be a
little extraordinary so far north.

Reports from Minnesota and Iowa indicate that the squash bug is more
abundant than usual this fall, ....qah.u.sm

Injury to the immature pods of peanuts by larvae of the spotted cucumber
beetle in-Virginia was reported in September.

The tobacco worm continued its :depredations into late fall, serious in-
jury being reported from Connecticut,

Late season conditions have been very favorable for boll weevil develop-
ment and reports from South.Carolina, Georgia, Florida, Mississippi, Louisiana,
and eastern Texas indicate that weevilss are much more abundant in the fields
than for the past several years, Abundant rains have produced a late growth
of squares and young bolls in which the weevils have continued -to develop.







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GE N E R A L F E E D.E*R S

GRASSiHOPPRS (Acrididae)

Illinois. W. P. Flint (October 21): ';e have started the egg survey, and
indications are that eggs are much less abundant than they were in the
fall of 1936. So little territory has been covered that no accurate
statement as to the number orf eggs can be made. Nearly all adult
grasshoppers have bepn killed by the heavy rains and low temperatures.
In most sections the number of adults was much less than in the fall of
1976.

Michigan. R. Hutson (October 22): The fall survey discloses an unusual
abundance of eggs wherever hoppers were numerous during the summer,
The infestation is spotty, some areas carrying normal populations and
many small areas and a few large ones carrying heavy populations.
Melanoplus femur-rubrum De-,. occurs throughout southern half of the
Lower Peninsula in frnce rows, ditchbanks, and similar locations.
North of the Muskegon-Bay City line M. mexicanus Sauss. and Ageneotettix
deorum Scudd. are the predominating species on stndy soils in hcavy in-
festations. M. mexicanus eisstill the predominnt species in northern
counties of the Lower and Upper Peninsulas. Camnula pellucida Scudd.
staged a strong comeback from last year and the eggs of this species
are readily found in all areas where it occurs in more than normal
numbers, especially numerous in the vicinity of Perkins, W'atson, and
Trenary.

Minnesota. A. G. Ruggles (October 18): The egg survey is on in full force.
Eggs of M. femur-rubrum are alun2d'-.nt in some of the southern counties.

Missouri. L. Haseman (October 22): In central Missouri our first killing
frost came on October 10 to 12. Since the first frost in central Missouri
there has been no further appreciablec frost. This being the case, grass-
hoppers, particularly ',. differentialis Thos., and the less mi'r-tory
(M. mexicanus), are still laying eggs on warm days. Locally, most of
the M. differentialis have now deposited their eggs and are gone, but
considerable numbers of :. mexicanus are present and the females contain
mature cpgs. In places in central Llissouri we are finding more egs of
M. differentialis than we have ever seen in past years and fsr more than
there were a year ago.

Nebraska. M. H. Swenk (October 20): Grasshoppers were largely engC-'ed in
oviposition during the period September 20 to October 20. 14. differ-
entialis and M. bivitt.tus Say laid their eggs at the normal time in
September, but the ovipositing of M. mexicpnus was somewhat delayed.
The total egg deposition for all injurious species bids f-ir to equal or
exceed that of the fall of 1936,

Oklahoma. C. F. Stil s (October 22): Grasshoppers hpve done considerable
damage to the fall-sown wheat and the fall seedings of alfalfa throut-h-
out the central a.nd western orarts of Oklahom The s-'.cits most common




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are M. differentialis and M. mexicanus. Practically ili of the M.
bivittatus have disappeared. There is also quite a mixture of various
species scattered throughout the State. M. mexicanus is, no doubt, the
most numerous, and apparently we have had a second generation in some
parts of the Stnte. Much poisoning has been done during the last 3
weeks.

Colorado. C. R. Jones (October 21): From the present egg'survey, it appears
that we will be visited by a tremendous outbreak of hoppers next year
and the migratory foirm, Dissosteira longipennis Thos., will appear in
counties not previously infested.

Nevada. G. G. Schweis (October 20): A grasshopper egg survey was completed
during the month of September and reveals that over most of the area a
normr-l' population of hoppers will occur next year, with indications in
& few' restricted' districts that the populations will be heavy enough to
ce-uS8 severe damage", '
j : '. ,' : .. ... .-

Utah. G. F, Knowlton (QOctober 9): Grasshoppers Ire till abundant and dam-
aging'alfalfa and other crops ?t Liberty., Eden, and Huntsville, in Weber
-: County. Egg'laying.-is wGll -along in most parts of northern Utah, and
Grasshoppers are decreasingly abundant. .(October 12):' They appear to
b be more: abundant in Cache, Carbon, Daggett,-Davis, Duchesne, Grand, Morgan,
Uintah, -and Weber' Counties than in 1936'. Populations were somewhat lower
in Utah County, in general. .

: .... MORMON CRICKTt '(Anabrus simplex Hald. ) ":-

Montana. H. B. Mills (October 21): Although generally kept out of cultivated
fields last summer, with injury reduced to a minimum, the area'infested
increased nearly 60 percent over last year, with the focal areas on the
southeastern State line from Carbon to Powder River Counties, in the
vicinity of the Highwood Mountains, the Little Rockies and the Bearpaw
Mountains, and the area in western Lake and eastern Sanders Counties.
SThey have been reported from most mountainous sections of the State in
Some numbers and probably every county contains these insects.

Nevada., G. G."Schweis (October 20): An egg survey was completed-recently
and a heavy deposition of eggs was found in Elko', Humboldt," Eureka, and
Lander Counties, with a lesser number in White Pine, Pershing, and Washoe
Counties. All indications point to a heavy infestationof, these insects
in the first-named counties. .

SFULLER'S ROSE BEETLE (Pantomorus godmani Crotch)

Georgia. C. H. Alden (October 18): Hundreds of these beetles have been found
in the last few weeks at CQrnelia, feeding on peach foliage. They are
more numerous than they have been in years in this section.

0. I. Snapp (October 21): This insect is Ebundant as usual at Fort
Valley, central Georgia, feeding on:the foliage of peach trees.-











Alabama. J. M. Robinson (October 20): Fuller's rose beetle is very abundant
over the State and was reported as ragging shrubbery foliage at Kinston
on October 8.

JAPA-,:--7E BEETLE (Popillia japonica HW-c,. )

Virginia. H. G. '"ilker and L. D. Anderson (October 26): The Japanese beetle
appears to be on the increase at the Virinir- Truck Expmriment Station
near Norfolk. Two beetles were caught in two traps in 1935, 8 beetles
were caught in 12 trc-ps in 1936, and 50 beetles were. caught in 26 traps
in 1937.

A SCARABABID (Ochros.idia villosa Burrm. )

Connecticut. W. E. Britton (October 22): :A lawn damaged by grubs has* just
been reported from Southport. Last year severe da.n':ge occurred at
Greenwich and this season the insect has caused similar damage in Eost
Norwalk.

BEET _r.^ J..71 (Loxostege stictic-.lis, L.)

Utah. G. F. Knwlton (October 7): Occurs on Russi-n-thistle 2.nd in culti-
vated districts in every county of Utah. It was geerally common, and
th moths abundant during much of the 1937 season.

UHITE-LIrD SFHIhNX (Sphinx linevt. F.)

Minnesota. A. G. Ruggles (October 18): Adults extremely numerous until frosts
begnn.

ViLVADA BUCK :;T':- (HImilcuca nevadonsis Stretch. )

Nebraska. M. H. Swenk (October 20): Speciimeins for idntification w re sent
in from Keith County on October 8.

A CUTTw1-OPJ' (Fcltia vener-bllis Ik.)

Mrine. H. B. Peirsan (Octobur 19): He-.vy flights of this moth occurred on
September 20 on the coast at B Hr HIrbor.

::0:;'ICT BUTTERFLY (Danaus menipp, Hbn. )

Marylnd. E. N. Cory (October 8): Monrrch butterflies l.-..i. to assemble at
Piney Point, Srint 'ar.sys County, on October 7. On the morning of October
8 it was cold "nd vindy and vury fev butt rfliss wero in evidence, but as
the day progressed rand the tt.mp r: turo rose, they ruaapaared until around
500 v;ere in the neighborhood clustering )n various trees preparatory to
clustering f)r th'. night. The specimens were- sprayed with a gren dye- in
the hope that they m.y be recorded from this clust r at points in their
southern travel.







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*. , PIPEVINE CATERPILLAR (Ppilio philenor L.) ,

Massachusetts. A. I. Bourne (October 19): Much more abundant than-usual.
One correspondent stated that she normally found 2 or 3 specimens each
year on her vines, Whereas ..this year she had already killed more than
150 larvae. This was the first brood'and the second was even more abun-
: dant. .. .

C .E. R E A L A ND F 0 R A G E- C R 0 P I N S E C TS

WTHEAT

IESSIAN FLY (Phytophaga destructor Say)

Ohio. T. H. Parks (October 26): More than the usual amount of wheat was
sowed early this fall but infestation is not serious enough to be a
Smenace.. .

Missouri. L. Haseman(October 22): While earlier indications showed hessian
fly to be relatively scarce throughout central Missouri, we are finding
now on volunteer wheat and on early seeded wheat indications of an appreci-
able infestation. Unhatched eggs were observed today on wheat at Co.lum-,
,'bic **.;

Krnsas. H. R. Bryson (October 25): Most wheat in southeastern Kansas is in
the two-three loaf st.ge and is. reported by R. H. Printer to be free of
fly. Near Buffalo, in Wilson County, in a field consisting of wheat of
tWo r ges, -the older planting was heavily infested. ...

CHINCH BUG (Blissus leucopterus Say)

South Ca-roline. F. Sherman and W. C. Nettles (October 16): St-rted the
season strong but subsided during the summer. Foermiers hvao learned more
about chinch bug and its control than in any other year to our knowledge.

Illinois. W. P. Flint (.Oc.tober .:1):. Conditions: for second-brood bugs were
very favorable, with dry weather during the greater part of August and
September. As a result, large numbers *of bugs are now in hibernation
quarters throughout the central part of the State. No definite survey
has yet been made, but casual observations indicate enough bugs to cause
severe damage next spring, should a normal winter survival take place.

Kansas. H. R. Bryson- (October 23): Reported as: having caused, some injury
to corn at. Parsons. They were almost absent in Kansas but built up con-
siderably in the season. Probably a good many will go into hibernation.

Oklahoma. C:. F. Stiles (October 22): Chinch bugs are numerous. in grain-sorg-
.hum fields throughout the central part of the State.

PLAINS FALSE IR:KO.,i (Eleodes opfaco .Fy)

Nebraska. M. H. Swenk (October 20): A complaint of damage in wheat fields






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in Fillmore County w's received thi second week in October.

Kansas. H. R. Bryson (October 22): Famse wireworms have caused considerable
injury to wheat sown in dry soil. Soil conditions have been more favor-
fble for the larvae this fall thfn last fall. Reports of injury h've
been received from Phillips, T.J. d-, Hcskell, and Lincoln Counties. Frocti-
cally all of the. counties in the western part of the State h':ve experienced
some injury.

A 7,EITE GRUB (Phyloph ga l"nceolata Say )

Kansas. H. R. Bry. ;*n (October 25): A report was received of injury to wheCt
in Kingman County.

Oklahoma. F. A. Fenton (October 19): Reports have ben received -f white grub
infestation of wheat in M1edford. The grubs are pr.'bably P. lanceolata.

CCEI

CCR4 EAkR OR. (Heliothis obs .eta F. )

Maine. H. B. Peirson (Octbher 19): Unusual number, )f m'ths ,vere in flight
on September 16 on the Bar Harbor coast.

Ohio. T. H. Parks (October 26): Late-maturing corn was not as badly injured
as in most seas.ns.

Minnesota. A. G. Ruggles (October 18): None in June. Very abundant toward
the end of the season. No cl'.,e to tomatoes.

Kansas. H. R. Bryson (October 22): The corn ear worm it, reported to be more
abundant in southeastern K nsa's than it h's been f' r sev-ral years. The
larvae have been numerous in sorghum heads in most localities.

Tex-s. R. K. Fletcher (Oct)ber 10): Ir-rvae found infestin la-te r-osting ears,
butter beans, okra, c-.tton, zinnia, 'nd hegori at Gorla nd in Dallas County.
Heaviest on heg'ri.

SOU-Trii COFJ:STALI"' 30:O: (Diatraea cra.ibidoides .;rjte)

South Carolina. F. Sherman and '.. C. :-.ttles (October 16): Several reports of
cornstalks falling because of work of the larvae. Such reports are seldom
sent us.

-.T'L-T' (Coleoptera)

Utah. G. F. Knowlton (September 29): Sweet corn et logan is being damaged by
the nitidulid Glischrochilus fas .i'atus 01iv. and the -carbaeid Euphoria
inda L. One cob of corn brought i.i yesterday contained nine nitidulics
and four of the scarabaeids. Soverrni findings of this form in sweet corn
were received during the season, beginning with th. e riy corn crop&






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CARROT BEETLE (Ligyrus gibbosus Deg.)

Tennessee. G. M. Bentley (October -25): Has been reported damaging cornfields
in several places. .

CORN ROOT APHID (Anuraphis maidi-radicis Forbes)

South Carolina. F. Sherman and W. C. Nettles (October 16): More abundant than
normal. Damage is chiefly in the eastern part of the State.
ALFALFA AND CLOVER
BLACK BLISTER BEETLE" (Epicauta pennsylvanica Deg.)

Tennessee. G. 1. Bentley (October 25): Has been a re."l pest in alfalfa fields,
and also in young seedings of clover planted in August.

PEA APHID (Illinoia pisi Kltb.)

M ine. J. H. Hawkins (October 17): More pea aphids have been found on red
a.nd alsike clover in central Maine this fall than -.t any time during the
last 2 ycars.

SOiGCHM

SORGHM WEBWORIM (Celama sorghiella Riley)

Texes. F. L. Thomas (October 22): Noted On heg'-ri at Garland. Fifteen percent
of kaffir heads infested at Alta. Lomra, Galveston County, on September 1.

LEAF-FOOTED BUG (Leptoglossus phyllopus L.)

Texes. J. N. Roney (October 22'): Abundant on sorghua headson August.2 and
September 5 in GFlveston County.

VELVETBFALdS

VELV-TBT-Ar CATERPILJLR (Anticarsia gemmatilis Hbn.)

Florida. J. R. Watson (October 22): Adults are very abundant. The c'ter-
pillars are persisting leter in the fall than usual, damaging not only
velvetbeans and peanuts but also covwpeas. This is the first instance we
have noticed of extensive damage to cowpeas by this insect. .

Louisiana. B. A. Osterberger and C. L, Stracener (October 5): A trip was made
to the North Louisiana -xA.-riment Station, Ouachita Prish, at which time
we found a few adults of the velvetbea.n cterpill-r, the first generation
of thb.t section.

SUGARCA.NE

SUG".2C.'JTE BORER (Diatraea saccharalis F.)

Texas. F. L. Thomas (October 22): More abundant than usual in Galveston County.
Twenty-five borers found in two stalks of cane. Also attackingg corn and
sorghum in G"lve.ston County on September 1.









FRUIT INSECTS


AP-PLE

COD1II::, MOTH (Carpocapsa pomonella L.)

Massachus,etts. A. I. Bourne (October 19): Damage was conspicuous in practi-
cally all orchards, even in the best-sprayed ones.

Virginia.' W. S. Hough (October 23): Injury to apple above average in northern
Virginia, largely because many growers failed to srray for control of
second brood, in July.

South Carolina. F. Sherman and W. C. Nettles (October 16): Some report less
damage than usual and yield of apples is far above normal.

Georgia. C. H. Alden (October 18): In Cornelia all larvae are in winter cases,
except a few that are now leaving the ripening fruit. No moths have come
to the bait pots since September 25.

Ohio. T. H. Parks (October 26): One hundred and eleven orchards which had re-
ceived fro.,1 6 to 12 spray applications were checkA-- for insect and disease
blemishes. The average percentage of stung fruit in the orchards was 3.5
percent,as compared with 5.6 percent in 1936. In 13 orchards less than
one-tenth of 1i percent of the apples bore codling moth blemishes. Ten
orchards averaged about 10 percent. The, heaviest infestations were in
La-wrence and Lucas Counties, where five orchards hd over 25 percent of
the apples blemished by .this insect.

Michigan,. R. Hutson (October 22): Damage was normal or slightly above; how-
ever, comparatively large populations of overwintering larvae are present.

Missouri. L. Haseman (October 22): Moths continued to fly at Columbia until
September 28 and then after a lull of several days a few moths were taken
on October 19. This is considerably lEter than previous records indicate,
although we frequently have appreciable numbers of moths occurring as
last as September 25. In .some orchards lrte-brood larvce were picked up
in abundance. Because of their _bundance, an appreciable percentage of
the winter apples picked in October showed worminess.

RTED-PAFCIED =EAF ROLLER (Argyrotaeni? veluti->na Wlik.)

Connecticut. P. Grmrrn (October 21): More abund:.nt than usual in New H ven
and New London Counties, and doing serious d< mage in apple orchards where
late sprays were omitted. Dam:.ged fruit amountrdto 9 percent maximum in
one orchard.

APPIE MAGGOT (Rh-c,-ol-t pomonella Walsh)

Maine. F. H. Lr-throp (October 20): In Monmouth, K(enneb c County, fw flies







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are still emerging in experimental cages, although freezing temperatures
have occurred. Excellent control was obtained in commercial orchards.
Unsprayed trees in general are infested.

West Virginia. L. M. Peairs (October 28): The apple maggot was very abundant
in an orchard at French Creek. I saw only the fag-end of the infestation,
but a competent entomologist assures me of the presence of the maggots over
a considerable period late in the summer. He also stated that adults were
numerous enough in the orchard to attract attention. '

APPLE APHID (Aphis poeia Deg.)

Maine. F. H. Lthrop (October 20): Dry weather late in the summer caused a
great ,reduction in the numbers of green aphids on apple trees in Monmouth,
Kennebec County. Colonies are now-difficult to find. Eggs were being
deposited on experimental trees late in September and in October.

ROSY APPLE APHID (Anuraphis roseus Baker)

Virginia. 1. S. Hough (October 23): This insect c, usAd more d' rnmge in May and
SJune in northern Virginia than has been observed since our last aphid year,
'1933. At present fall migrants from plantain to apple are moderately num-
erous in all orchards examined.

LEAFHOPPERS (Cicadellidae)

Massachusetts. A. I. Bourne (October 19): The late brood of white apple leaf-
hopper (Typhlocyba pomarisa'McAtee) was very abundant generally over the
State, and many growers had considerable difficulty in checking them.

Missouri. L. Haseman (October 22): Two or three flights or leafhoppers occurred
at Columbia. around the middle of October, representing a number of diff-
erent species. Flights have continued a little later than usual; however,
:with most fruit, shade, and forest trees still carrying green foliage, it
has been possible for leafhoppers t.,, work later than usual.

SAN JOSE SCAJL (Aspidiotus perniiciosus Comst.)

Virginia. W. S. Hough (October 23): VE'ry scarce. Less prevalent in northern
Virginia on apple than has been observed for many years.

Georgia. C. H. Alden (October 18): Adults moderately abundant in Cornelia on
peach and some crawlers noted. Light infestation on apple wood and a few
scales found on apples being harvested.

Georgia. 0. I. Snapp (October 21): Frequent' heavy rains in August retarded
the infestation which wrs building up rapidly in July at Fort Valley, cen-
tral Georgia. The infestation on peach trees is now somewhat less than
that of an average year.

Illinois. W. P. Flint (October 21): The weather of the early fall was quite






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favorable tu the San Jose scale and a considerable increase occurred in
the southern part of the State. Indic tions arc thEt the southern
Illinois pcach orch-rds will have to be sprayed this fall.

COMSTOCKS -S.LYBUG (.Psoaud coccuss comstocki Kuw.)

Virginia. W. S. Hough (October 23): This mealybug developed to such an ex-
tent in a few apple orchards in Fr;-Cr.ick& Clarke Countes th.'-t much fruit
was da'-ged. The calyx; end -f some varieties turned black. nd on other
varieties, such as York, both calyx and stem :V turned black from the
sooty m)ld which develops in the honeydew secreted by the mealybugs.
SLarge white p; tches show on ,the brk, indicating depositin of overwinter-
ing egg masses.



ORIE1 TAL F-J'IT :.,-THi (Grapholitha molesta Busck)

Ohio. T. H. Parks (October 26): Almost ev:ry peach of varieties m*wturing in
October is infested. Some have more than one larva. No evidence of in-
jury to apples.

Michigan. R. Hutson (October 22): ".s held in check by parasites in most
peach-growing areas. About South HWv'ean some orchards showed 50-40 per-
cent darmrge, notwithstanding the presence of several species -f prasites.

Mississippi. C. Lyle (Octob;r 23): Heavy infestations h-v: b:en r;pjrted from
J'ckson, Meridian, and Aberdeen districts.

PEACH BORER (C rmopia exitiosa Say)

Georgia. C. H. Ald n (October 18): Ligtet infstation at Cornelia. Most or-
chards have been treated.

0. I. Snapp (October 21): although their w,s t moderate infestation
of ovrv:interod larvae and resulting' adults lte in th. smwrnr, the indi-
cptiors are that new larvae are at pr sent less cbund-nt than usual in
peach trees at Fort Valley. This s ):Yx.what light infest' tion is believed
to be due t) fr-'quent h-/vy rains durLi- th e.,arly p-rt -.f th, hatching
se as that undoubtedly prevented mLny larvae frrm gaining entrance into
peach trees.

LL3S:-R FZ3CH BORER (CmnpiL pictiroes G. & R.)

Ohio. T. H. Parks (October 26): Thce insects are c<'usin csjri )us d-.'-i' "c to
poach trees in parts -f Ottawa C.;unty. Tliey ri nov. precsnt fr-m very
young t-', almost half-Crwn borers.

PLU1 C[TRCUTLIO (Conotrachelus nenuphar Hbst.)

Maine. F. H. Lathrop (October 20): A few adults ar e ei:er in, in exp rimental






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ceges at Monmouth, Kennebec County, although freezing temperatures have
occurred. Injury to apples in commercial orchards and on unsprayed
trees iS distinctly more severe than usual.

Georgia. 0. I. Snapp (October 21): Extensive jarring of peach trees by T.
R. Thompson on September 23 and 25 showed that most of the adult cur-
culios had left the trees at that time, 3 weeks after the appearance
of many second-generation individuals on the same trees. It is not
known whether thee individuals went to other hosts or locations or
into hibernation." A diligent search in woods adjoining peach orchards,
under peach prunings, pine limbs, and grass during the latter part of
September and the first half of October, failed to locate any adults,
although other species of curculios and leaf beetles were found.

BLACK PEACH APHID (Anuraphis persicae-niger Smith)

South Carolina. F. Sherman and W. C. Nettles (October 16): Above average
during the year.

CHERRY

SHOT-HOLE BORER (Scolytus rugulosus Ratz.)

Nebraska. M. H. Swenk (October 20): Reported attacking cherry trees in
Clay County on September 28.

GRAPE

GRAPE BERRY MOTHi (Polychrosis viteana Clem.)

Ohio. T. H. P.rks (October 26); This insect is more abundant than usual in
the commercial vineyards along Lake'Erie.

Michigan. R. Hutson (October 22): Infestation has been severe in Berrien and
Van Buren Count i es.

PECAN

HICKORY 3HUCK WORM (laspeyresia caa.na Fitch)

South Carolina. F. Sherman and W. C. Nettles (October 16)-: Some damage in
eastern part of the State.

OBSCURE SCALE (Chrysomphalus obscurus Comst.)

Mississippi. C. Lyle (October 23): An infestation of obscure scale on pecan
was noted at Webb on October 12.

HICKORY NUT

A WTEEVIL (Curculio sp.)

Missouri. L. Haseman (October 22): In recent years, hickory nuts through






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central Missouri have consistently shown a rather heavy nut weevil in-
festation. Nuts being gathered at this time show approximately a 5-
percent infestation and it seems to be a little lighter on most trees
than during the last few years. The hickory nut crop, however, is very
heavy, which 14y account for the apr-r'rent reduction in percentrI.- of
nuts infested,

WANU JT

'AALfrrUT HUSK FLY (Rhagoletis comolet. Cress.)

California. D.W. Tubbs (October 19): At the suggestion of D. B. MIackie,
I report the finding of the walnut husk fly in Orange County. This
is the first year this insect has been reported on the coastal side of
the foothills lying between Orenge County and the former area of infesta-
tion in Los Angples and San Bernardino Counties. Specimens have been
found across the north .nd northocsterly section of the county, particu-
larly in the eastern and native black walnuts, and also in several com-
mercial plantings of the Persian walnut.

H. J. Ryan (October 21): All of the Eureka variety of walnuts
known to be infested in Los Angeles County, and most of the Placentia
variety were sprayed. Control was satisfactory and, as compared with
last year, was excellent.

WALNUT CATT PILLAR (Datana integerrima G. & R.)

Virginia. H. G. walker r and L. D. Anderson (October 26): The walnut datana
wes Pbundant on many walnut and hickory trees at norfolk during the
summer.

Minnesota. A. G. Ruggles (October 18): Reports' numerous in September. Not
quite as abundant, however, as in 1936.

Oklahoma. F. A. Fenton (October 19): The second brood of the walnut datana
completed defoliation of pecan and walnut trees several weeks ago and
some trees are beginning to put out a late crop of leaves.

CITT.-!

CALIFORNIA RFD SCXLL (Chrysomphalus aur'ntii Mask.)

Texas. S. Clark (Seotember 20): Causing serious dnm.e to citrus in the
Mission-Einburg section in western Hidalgo County.

California. H. J. Ryan (October 21): Considerable control work was done in
August and September and by the first of October a gri.at rvmny groves in
Los Angeles County th.t were thought to be in excellent c~nditijn
following spring and early summer treatment were c-rrying an extremely
heavy population, which means thrt a. great deal of late fall and early
spring control work will be necessary.







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DICTYOSPERMU'M SCALE (Chrysomphalus dictyospermi Morg.)

Louisiana. I. 5. Becnel (October): A light infestation' of scales.. was
found in the Louisiana State University grove at Baton Rouge. The
specimens were studied by Dr. Harold Morrison and were found to,,be
exceedingly close to C. dictyospermi, but showed slight differences
from the characteristic form.

CLOUDY-WINGED WHITEFLY (Dialeurodes citrifolii Morg.)

Florida. J. R. Watson (October 22): The fall brood is on the wing in about
the usual numbers. ...

A CITRUS*MITE (Anychus clarkii McG.)

Texas. S. W. Clark (September 29): Extremely abundant in most citrus orchards
in the lower Rio Grande Valley.

CITRUS RED MITE (Prratetranychus citri McG.)

California. H. J. Ryc-n (October 21): Infestations decreased during the lat-
ter part of September in'Los.Angeles County. High temperatures and low
relative humidity are generally presumed to have been responsible.

MANGO

MANGO SHIELD SCALE (Coccus mangiferae Green)

Florida. E. W. Berger and G. B. Merrill (October 22): Abundant specimens re-
ceived from leaves of mango trees at Bokeelia, Pine Island. Judging from
the specimens received, a fungus, Aphalosporium lecenii, is controlling
the scale.






-449-


TRUCK-CROP INSECTS
,~~ V TA=- 1A,' *'**i
IVE, TABLE -'EVIL (Listroderes obliquus King)

Alabama. T. M. Robinson (October 20): ,Moderately abundant at Auburn.

Mississippi. G. L. Bond (October 25): This insect has been injuring turnips
at :oss Point during the lest 2 weeks.

Texas. J. N. Roney (September 7): On carrots et Alta Lo ma in Galveston County,
in an old carrot patch that had no cultivation for nearly a year.

CCUUMBER LKI:ZLE: (Diabrotica spp. )

Ohio. T. H. Parks (October 26): Adults of the southern corn rootworm (D.
duodecimpunctata F. ) were very numerous in September.

Missouri. L. Haseman (October 22): The spotted cucumber beetle is still
moving about and feeding, particularly on late flowers. The striped cu-
cumber beetle (D. vittata F.)'ca" sc d work and apprently went into hiber-
nmtion in central ,1Missouri around October 10.

Kansas. H. R. Bryson (October 25): Adults of thu twelvw-spotted cucumber
beetles arc more rbund.nt th-n for several yc. rs.

BAiD-D CUCTnER -FTLE (Diabrotica baltetc, Lec,)

Florida. J, R. ..'..tzn Octoberr 22): Avidly distributed on truck crops in the
southern p'rt of the St'to. In som,. sections it is doing considerable
damage.

Alabama. J. M., Robinson (October 20): Very abundant on v, getables in central
Alib- me.

Texvs. J. N. Roney (September I): Abundant on butns, tomLttos, and beets in
Galveston County.

SOUTHERN OGR'i S`TI:`T'1.- (Nezar viridula L. )

Florida. T. R. Watson (Octob(r 22): As during the past 2 years, unusually
scarce in th Citrus Belt but unusu' lly abundant in the western part of
the State.

Mipsissippi. C. Lyle (October 25): Reported injuring cotton at Columbie,
butter be& ns at Jc-ckson, and s )ybsans end velvetboans at Now Augusta
during this month.

Louisiana. B. A. Osterborger (Octobor Ib): Thce south,mrn green sti:ikbu,. is
now injuring young peas -nd beons in ,,11 sections of th': St, to. Both
adult -nd nymphal stages are( fading on pods.







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Texns. F. L. Thomrs (Oct(ber 22).: ,Observed on tomato, okra, butter beans,
and peas in Rusk -. County, on October 15. Almost impossible
to raise late peas.

TA-RNISHED PLANT BUG (Lygus pratensis L.)

Iowa. H. E. Jaques (October 18): Has been unusually abundant during Septem-
ber and October throughout much of southern Iowa. Their actual damage
has probably been negligible, but large numbers on garden plants have
proved very annoying.

Kansas. -H. R. Bryson (October 23): More abundant this fall than last.

FALSE CHINCH BUG (Nysius ericae Schill.)

Michigan. R. Hutson (October 22): Numerous north of a line from Muskegon to
Bay City.

A LEAF-FOOTED BUG (Leptoglossus sp.)

Alabama. J. M. Robinson (October 20): leaf-leg bug is unusually abundant on
field peas and late tomatoes.

MOLE CRICIETS (Gryllotalpa spp.)

Massachusetts. A. I. Bourne (October 19): In late September we received from
southern Hampden County (in the Connecticut River Valley just above the
Connecticut State lite) specimens that proved to be the northern mole
cricket (G. hexadactyla Perty), with the complaint that they were very
abundant in a planting of potatoes. We visited this outbreak and found
that while digging the potatoes the grower had uncovered 'more than 100 of
these insects. Examination of his crop, which amounted to 40 or 50 bushels,
showed more than 10 percent of it injured more or less, with many of the
potatoes so deeply gouged that they were worthless. This is the first
report of those insects occurring in appreciable numbers. We have taken
them occasionally on the average of possibly one a season but never in
large enough numbers to be considered of economic importance.

Alabama. J. M.,Robinson (October 6): Mole crickets are causing considerable
concern in gardens at Baker Hill.

Texas. F. L. Thomas (September 1): Mole crickets damaging general truck crops
in Go.lveston County, and in Houston, HPIrris County, they are attacking
dahlias.

TOMATO

TOMATO PI IVhORM (Gnorimoschemr. lycopersicella Busck)

Florida. J. R, Watson (October 22): A survey of the tomrwto fields in the
southern part of the State showed the pinworm to be exceedingly scarce.


.*. '.






-451-


California. A. E. Michelbacher (October 22): Thousands of tomato fruits have
been examined in the San Jose-Santa Clara area during October and approxi-
mately one-tenth of 1 percent of them were found to be infested. Last
year only 2 specimens were-collected, whereas this year no less than 25
have been taken.

CORN EAR WORM (Heliothis obsoleta F.)

. California. A. E. Michelbacher (October 22): An examination of our check plots
at Santa Clara on October 18 showed that 17 percent of the tomatoes were
infested. At Brentwood on October 15 the infestation ran as high as 10
percent. Fields in Sacramento County wore surveyed on October 20 and the
infestation was found to-'range from 0.5 percent to 5 percent. The follow-
ing day an examination of fields in Yolo County showed that the infestation
ranged from 5 to 12 percent. Harvest in these two counties is nearly com-
pleted.

.... .. BEANS

MEXICAN BEAN BEETLZ (Epilachna varivestis Muls.)

Tennessee. G. `1. Bentley (October 25): Generally over the State there has
been less injury than for the last several years. However, in certain
localities, especially in upland regions of the State, the injury has
been serious with untreated beans.

Mississippi. C. Lyle (October 23): Inspectors L. J. Goodgame and N. L. Doug-
lass report serious damage to beans in Monroe and Yalobusha Counties,
respectively. Heavy local infestations are reported from Laurel, Meridian,
and West Point. -

LIMA BEAN POD BORFR (Etiella zinckenella Treit.)

Texas. R. K. Fletcher (October 10): Destroyed 50 percent of lima bean pods
in Garland, Dallas County.
!



BEET AR',.OF (Laphygma exigua Hbn.)

California. T. C. Elmore (October 21): Has been very destructive to young
pea plants at Riverside. The plants were entirely destroyed in parts of
.one field. This damage is associated with high temperature (100F. on
October 21).

CABBAGE

DIAMONDvIBACK 'OTH (Plutella maculipcnnis Curt.)

Virginia. H. G. Walker and L. D. Anderson (October 26): A few' l-rvae of the
diamondbacked moth are beginning to appear in some fields of kale and







-452-


collards s.t Norfolk, but it is doubtful whether they will do much damage.

CABBAGE LOOPER (Autographa brassicae Riley)

Texas. J. N. Roney (October 22): On cabbage and collards at Alta Loma, Galves-
ton County, in August. Also abundant on cabbage, cauliflower, and col-
lards in Galveston County on September 1.

S. W. Clark (October 4): Attacking cabbage. Moderately abundant in
seedbeds....

C A B B CABBAGE "'EBUJ0%1 (Hellula undalis P.)

Texas. S. W. Clark (October 4): Reported injuring 20 percent of the plants in
a cabbage seedbed at Donna, Hidalgo County.

IHARLEQUTJIN TBUG (Murgantia histrionics Hahn)

Virginia. H. G. Walker and L. D. Anderson (October 26): Although the harle-
quin bug has been slightly more abundant this year than last, it has
caused very little damage, except in a few Lsolated instances at Norfolk.

West Virginia:.' L. M. Peairs (October 28): The harlequin cabbage bug continues
to be locally abundant and reports are so scattered that it is doubtless
present in most parts of the State, locally as a pest. From about 1915
to about 1930 or 1931 this insect was practically absent from, the State.
It seems now to have notable reduction in population.

'*** * *SOJJASH

SQUASH BUG (Anasa. trists Deg.) ,.

Minnesota. A. G. Ruggles (October 18): More complaints than usual of damage
to cucumbers. The insect is never found north of St. Paul-and Minneapolis.
One cose reported from St. Paul this year.

Iowa. H. E. Jaques (October 18): Th'e'squash bug is now going into hibernation
in large numbers.

PICIKLEWORMS (Diaphania spp.)

Florida. J. R. RWFtson (October 22): The.melonworm and the pickleworm are
doing their usual danrge to the foll crops of squash and cucumbers. ,

TURNIP

TURNIP APHID (Rhope.losiphum pseudobrassicae Davis)

Virginia. H. G. Walker and L. D. Anderson (October 26): A heavy infestation
was observed at Norfolk in a 10-acre field of Hanover salad, and several
cabbage seedbeds have been reported as being rather heavily infested.







-453-


Mississippi. C. Lyle (October 23): Reports of aphid injury to turnips have
been received from the '.:ridian-, Ocean Springs, and State College districts.

Louisiana. P. K. H.rrison (October 19): Not as abundant as in some years at
Baton Rouge but increasing in numbers. Dr-m'.ge is light.
Texas. J. N. Roney (October 22): A few wingless forms on turnips and mustard
in Galveston Coun'ty.

CELERY

A PILLBUG (Oniscidae)

South Carolina. J. N. Todd (October 8): The pillbug was found to be injuring
a planting of celery at Uest Union.

PEANUTS

SPOTTED CUCT7,T P BEFTLE (Diabrotica duo 4ecimpunctata F.)

Virginia. F. I. Poos (Septc-iber 20): Considerable injury to pods of imm-ture
peanuts in the soil; at Holland a very high percentage of the nuts is in-
fested in low damp spots in the fields.

ST-^. W^RY

STRAiT,_:kY CROV;N :IlR (Aristotelia fragariae Busck)

North Dakota. J. A. :.'i:unro (September 17): Reported as pest of strawberry in
Iorth Dakota. (Det. by Carl Heinrich.)

I VTPOTATO

L. E.TT'OTATO .T7VIL (Cylas formicarius F. )

Texas. F. L. Thomas (October 22): In sweetpotatoes in August at Alta Loma,
Galveston County. Adults taken at light in a State Park at Bastrop, Bas-
trop County, on several occasions fru.I the latter part of September to
October 15.

3',:ETT"OTAiTO hdi 011, (Hersc cingutlta F.)

Florida. J. R. '. tson (October 22): The eweetpota.to sphinx is reported to be
doing considerable dfr.n-.ge in Bradford County.

PEPPER

PEPPER JE3VIL (.nith,-,n jmus u, n i i Cano )

Florida. J. R. lWatson (October 22): A survey of the bcll pepper plants in
Manotoe County revealed no pcpocr weevils on the roung plants either in


LIBRARY







-454-


the seedbeds or recently set in the field, but a small plantation of
hot peppers, which had been carried through the summer, had a heavy
infestation, about 85 percent of the -peppers being infested.

BEETS

HA'.'JAII J1 BEET WJEBWORM (Hyrmenia fascialis Cram.)

Virginia. H. G. Walker and L. D. -Anderson (October 26): Present in small
numbers in spinach at Norfolk but has not caused much damage.

Texas. .J. N. Roney (October 22): Abundant on beets, completely destroying
the foliage on untreated areas where the crop was not dusted in Galves-
ton County. First appeared in'July. This pest has practically eliminated
planting of beets as a fall crop in Galveston County.

S EET ILFZJiOPPER (Eutettix tenellus Bak.)

Texas. M.,J. Janes (October 25): Light migr-tion of beet leafhoppers into
the Winter Garden area began October 8. One e taken on 00 square
feet of spinach where the leafhoppers were absent during the summer
months. Survey indicates thct only a small population exists in summer
breeding grounds to the northwest.

TOBACCO

TOBACCO ....7. (Protoparce quinquemaculata Haw.)

Connecticut. A. W. Morrill, Jr. (October): In the Connecticut River Valley
these insects usually appear in greater numbers on thesuckers, which are
of no commercial importance, than-on tobacco plants before harvest. This
season, however, was lcte and much dnm.ge was done before harvest. Even
on suckers the attack is said by growers to be tha worst in 43 years.


SC 0 T T 0 N I N S E C'T'S


BOLL ,TFVIL (Anthonomus grandis Boh.)

South Carolina.' F. Sherman and W. C. Nettles, (October 16): Unusual number
in spring, population high throughout the season, but heavy infestations
were spotted and worse in the eastern section, where loss was severe on
some farms.

Georgia. 0. I. Snapp ,(August 20): The boll weevil, rather scarce a month ago,
.... increased rapidly at Fort Valley, central Georgia, during the lest 2 weeks,
with frequent rains, and the infestation now is moderate, although the
,crop is about made. ,Some damage is still being done.

Tennessee. G. M. Bentley (October 25): Not a single specimen of the boll






-455-


weevil has been reported as being taken in the State this year. Gen-
erally numbers not sufficient to cause injury are found in the latter
part of August and early in September.

Oklahoma. C. F. Stiles (October 22): The boll weevil has destroyed all of
the late crop thrcou,'hout central and southeastern Oklahoma. There are
many times as many weevils in the fields in the southeastern quarter of
the St-te cs there wore this time last -yi'r.-

Alabama. J. M. Robinson (October 20): The boll weevil is :ro, scarce to
moderately abundant at Auburn.

Mississippi. C. Lyle (October 25): Boll weevils are present in large numbers
in cotton fields in all parts of the Stat(. An unusually largo number
will enter hibernation.

COTTON LEAF ..'R".! (Alabamra arHiUl0c Hbn.)

South Carolina. F. Sherma.n and W. C. Nettles (October 16): have known
only one field thct showed noticeable damf.ge. It was in the eastern
part of the State.

Georgia. 0. I. Snapp (October 21): The cotton leaf worm ha.s been noticeably
less abundant this fall rt Fort Valliy than usual. Only a few specimens
have been seen, and the insect has done no d=nrge,

Missouri. L. Hasnm' n (Octobcr 4): '.L observed moths at Columbia on Septem-
ber 27 for the first time this fall. Great numbers of them around apple
pomace.

Oklaho1 i C. F. Stiles (October 22): Ge.nerally present over the entire State,
but most of the defoliation occurred in the southeastern part.

Mississippi. C. Lyle (Octobur 25): Still present in the northern and western
parts of the State but doing very little d qe.

Texas. J. N. Roney (October 22): Moths were attacking figs on Sept.mber 1 in
Galveston and Harris Counties.

SOUT'-TPC GRU:7. STL -'_'; (Nezara viridula L.)

Florida. H. C. Young (S&ptember 29): Approximnately 70 acres of cotton 6 miles
south of Jay was amagrgd. In one 40-acre fie-d th't hid rec-iv,:d 500
pounds of commercial fertilizer per acre the yield was only 7 bales, or
approximately 270 pounds of se:(d cotton per acre. The usual production
on this land has been from 1,000 to 1,250 pounds per acre. Certain srots,
several acres in size, did not produce enough cotton to wrrrant picking.
In some spots the bolls w;re not attacked until they wcre bout m'-ture
and they are still hanging on the plants but were damnged so th'.t they
did not open. In other parts of the field only smr-il bolls were to be
found. The stinkbugs were so numerous they destroyed th> crop b .for.
the bolls att-ined appreciable size. It is .oZsiblc th' t soe dem" C'






-456-


could have been caused by the rapid plant bug (Adelphocoris rapidus
Say), as the limbs of the plants are crooked, indicatingAdelphOeoris
work. Farmers reported that the stinkbug attacked the young `corn'plants
and caused many to be distorted. The damage to corn ears was confined
to a strip approximately 100 feet wide adjoining a peanut field. -The
stinkbugs are still present in large numbers attacking the nuts where
they ere near the surface of the soil.. Farmers report that the stink-
bugs were fairly abundant last September and October and the mild winter
was very favorable for their survival.

COTTON STAINER (Dysdercus suturellus H. S.) "

Florida. J. R. Watson (October 22): In certain sections'the cotton stainer
has been doing some damage to the crop of Sea Island cotton.


FOREST AND SHADE-TREE INS.E.O'TS


GYPSY MOTH (Porthetria dispar L.)

New York. A. F. Burgess (September 30): Some of the men engaged in work on
the pine blister rust discovered gypsy moth egg clusters on Trumbull
Mountain, in the town of Hague:, Warren County. This town adjoins the
barrier zone on the west. They report that a gypsy moth colony was
found in the township of Southeast, in Putnam County, bout mile from
a cage where three moths were attracted this summer. About 30 egg 'clus-
ters have been treated and work will: be continued.

FALL CANKERWOM (Alsophila pometaria Harr.)

Iowa. H. E. Jaques (October 18): Showing up as adults where it has been
causing trouble on elm and apple. It is probable that the fall flight
and resultant egg laying will be unusually heavy.

FALL WEBWORM (Hyphantria cunea Drury)

Massachusetts. A. I. Bourne (October 19): We found that the fall webworm,
which is annually quite abundant and conspicuous late in the summer and
early in the fall over the. State as a whole, wcs this year comparatively
scarce. Not only was "it 'seldom'seen in orchards but it was also unusually
scarce along the roadsides.

Ohio. E. W. Mendenhall (September 25): Was very abundant last summer end
caused some concern.

Tennessee. G. M. Bentley (October 25): This insect as a rule starts its work
the latter part of July and continues until killing frost, but this year
injury has been very light.

Texas. F. L. Thomas (October 22): Rather abundant on pecan in Robertsun, Leon,





-457-


and CGalveston Counties on September 10.

California. K. A. Salman (September 20): Many webs on black walnut shade
trees growing along the roadside in Colusa and Princeton, Colusa County,
north-central California. Trees damaged by defoliation.

SOUTHERN PINE SAWYER (Monochamus titillator F. )

West Virginia. F. W. Craig (September 28): Attacking hemlocks in a nursery
at Huntington. (Det. by A. G. Moving.)

Georgia. T. L. Bissell. (October 26): Reports continuing to come in from
Griffin and 'JcDonough of injury to deodar cedar due, in part at least,
to this species.

"'JA SIIG]STICKS (F1hasr.idae)

Virginia. R. G. Pierce (October 15): There was an epidemic of walkingsticks,
which seemed to -have defoliated trees on about 100 acres on Gimlet Ridge,
Warren County, between Browntown and Bentonville. There was also a
severe defoliation on Pickrel Ridge, Rap-;,'h-.nnock County. The trees most
heavily defoliated were oak, hickory, and locust.

Minnesota. A. G. Ruggles (October 18): On a farm in Dakota County millions
of walkingstieks were denuding young oak, wild cherry, and hazelnut. They
were also eating quackgrass.

BZICH

BEECH SCALE (Cryptococcus fagi Baer.)

New York. E. P. Felt (October 23): Found -r,.eraly present, and on some
trees a.t 1.,w Rochelle it was abundant.

BIRCH

BIRCH LEAF-MINER SA'.-TLY (Phyllotoma nemorati F-ll. )

Maine. H. B. Pcirson (October 19): Noticeably heavy infestations occurred
this year, causing foliage to bt- well browned and mined :..t Knox, south-
centra.l Mrine, &nd in the Dead River area, in western Maine.

RON!-TiFD BIRCH BORFR (Agrilus anxius Gory)

Ohio. E. W. Mendenhall (October 2): In Springfield and Dayton the injury to
birch trees is severe.

CATALPA;.

CATALPA SPHINX (Ceratomia cutalpac WV. )

South Carolina. F. Shorman and I,.. C. i.-ttles (October 16): Occasionai trees






-458-


have been defoliated but there has been no epidemic. The catalpa tree
is neither important nor numerous and we believe that the popular use
of the larvae for fish: bait is a: genuine factor in hold.ing. down its
numbers on the'few trees we have. In many years we have noticed also
the effective work. of parasites. ,

Ohio. E. W. Mendenhall, (September0), .3.0 Nearly all of the caetalpa trees
throughout central Ohio were defoliated.

*ELM. * .. ,

ELM LEAF BEETLE (Galerueclla', xanthomelaena Schr. ).

Ohio. E. I'. N1criu:.'nhsll (September 50): Abundant on all varieties of elm,
including the Chinese elms, at Columbus.

ELM BORER (Saperda tridentc.ta Oliv.)

Ohio. E. W. Mendenhall (October i): Does a great deal of damage to ;1ms where
they have been weakened by drought. "; : .,

TUIG GIRDLER (Oncideres cingulatus Say) .

Louisiana. B. 'A. Oste-rbergor ('October 15): A report wus received of twigs
on very l.rgo elms being pruned at Baton; Rouge. Upon- investigation it
was found to be the work of a girdler, perhaps 0. cinguL,-tus.

MOURNING-CLOAK BUTTERFLY (Hamadryas Lntiopa L.)

Minnesota. A,. G. Ruggles (October,.18): Morf, reports than usual of this in-
sect defolicting elms, particularly Chinese elms, in the northern half
of the State. . ,

WOOLLY ELM BARK APHID (Eriosoma rileyi Thos.)

Ohio. E. W!. Mendenhall (October 2): Severe on elms in certain localities in
Columbus.

EUROI-EAIJ ELM SCALE (Gossypc-ria spuria Mod.)

Ohio. E. W. Mendenhall (October 2): Severely infesting elm trees, especially
young trees, in central Ohio.

California. K. A. S'-lman (October 6): Shade trees long the streets of Susan-
ville, Lassen County, northeastern Cal:ifornia, found to be infest.cd.. In-
festation ranging from light to very heavy is general in the town. On
some trees twigs are dead or dying, on some whole br-nches have been
killed, nnd some have yellow foliage.....

... .. .. FIR

S 'AN APHID (Dreyfusia. piceae Rutz. ) .

Oregon. F. P. Keen (September 20): Several dozen ornamental white firs on an





-459-


estate near Salem heavily infested. The galls about terminal buds
have disfigured and weakened the trees considerably.

A TUSSOCK MOTH (Hemerocampa sp.)

California. K. A. Selman (October 4): This is the second year of defoliation
of white fir trees in the mountains east of Adin, Modoc County. Centers of
infestation last season were in the vicinity of Rush Creek. This season's
infestations were light there but heavier in areas and watersheds east of
Rush Creek and Fox Mountain.

.'i:.,1 C OK

IK.UlOCK. LOCFER (Ellopia fiscellaria Guen.)

Maine. H. B. Peirson (October 19): Flight of moths at Bar H-rbor on Septem-
ber 20 reported but not as heavy as last year.

LO CUST

LOCUST BOk:R (Cyllene robiniace Forst.)

New York. R. E. Horsey (October 1): Considerabl(. damage to a planting of
ornamental varieties of tht common locust at Rochester. In some cases
the branches ,nd trunks were well riddled with tunnels. An adult beetle
was found today.

Ohio. E. W. Mendenhall (October 2): Locust borers arc quite bad in black
locust and are doing considerable damage throughout central and southern
Ohio.

Iowa, H. E. Jaques (October 18): Th.e adults of the locust borer are fairly
abundant on" their fall food plant, the goldenrod.

MAPLE

SUGAR MAPLE BORER (Glycobius speciosus Say)

Ohio. E. W. Mendenhall (October 16): Maple trees, especially street trees,
severely infested in cities and towns in central Ohio.

TERRAPIN SCALE (Lecanium nigrofasciatum Pirg.)

Ohio. J. S. Houser (October): Many (xamples of encrusted branches of maple
have been sent in for determiiri-tion. This insect is more abundant th'n
it has been for several years. It is widespread over the State.

OAK

r.':ID RIJTF.R (Hypermallus villosus F.)

Massachusetts. A. I. Bourne (October 19): Two years ago this insect was so






-460-


abundant that it caused some of the power companies considerable expense
on account of short-circuiting caused by infested branches breaking down
onto the wires, particularly during storms with high winds. This year
we have had practically, no complaints and several owners who had been
keeping their trees under close observation for the last 2 or 3 years
reported that so far as they could discover the pest did not appear this
year. In any event it was very scarce.

Ohio. E. W. Mendenhall (October 14): Noticeable where oaks are grown in timber
lots and along the streets in central Ohio.

A SAWFLY (Eriocampoides fasciata Nort.)

Iowa. H. E. Jaques (October 18): Has destroyed the mesophyll of'half or more
of the leaves on two pin oaks on the campus of Iowa Wesleyan, at Mount
Pleasant.

OAK LACEBUG (Corythucha arcuata Say)

New York. E. P. Felt (October 25): Disfigured oak leaves at Newburgh.

A GALL INSECT (Neuroterus papillosus Beutm.)

New York. E. P. Felt (October 23): Were extremely abundant on white oak
leaves at Pelham and also at East Norwich, Long Island.

PINE

SAiFLIES (Neodiprion spp.)

Ohio. J. S. Houser (September 22 to October 18): N. pinetumt Nort. seems to
be unusually prevalent this season at Wooster, McArthur, and North Olmsted.
Trees 18 feet tall near Wooster were stripped. Insects were feeding abun-
dantly as late as October 6. Many puparia found under trees. Some have
gone into the soil -1 inch.

Michigan. R. Hutson (October 22): Larvae of Abbott's sawfly (N. abbotti Leach)
and Leconte's sawfly (N. lecontei Fitch) have been numerous, reports
coming from Stockbridge, Kalamazoo, Cadillac, Traverse City,. Saginaw, and
Detroit.

Louisiana. B. A. Osterberg-r, (September ,21): A specimen of sawfly was sent
in from northern Louisiana, and reported to be injuring young pine.
(Det. by R. A. Cushman as Neodiprion, probably lecontei.)

A evilVL (Hypomolyx piceus Deg.)

Maine. H. B. Peirson (October 19): On September 12 at Castine, on the central
coast, Scotch pine trees were dying from effects of grubs of this weevil
working just below ground leveO, ..beneath the bark. Grubs were full grown
at the time.






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PALES T'7VIL (Hylobius pales Hbst.)

HNw Hampshire. R. B. Friend (October 20): About 70 percent of the white
pine trees planted at Keeno last spring, in an area cut in the winter
of 19J6-37, are already dead. This is probably not an unusual degree
of injury for the locality.

PINE IUEFDLE SCAiE- (Chionaspis pinifoliae Fitch)

Utah. G. F. Knowlton (October 10): Ornamental pines and spruce have been
heavily infested with pine leaf scale during the current season.

POPLAR

POPLAR TE..LJS ('Ichthyura inclusa Hbn.)

West Virginia. L. M. Peairs (October 28): Has been very abundant on poplars
of several species, notably Populus alba, P. grandidentata, end P.
tremuloides in many localities in the State. I have observed it from.
Ohio, Upshur, and Monongalia Counties, also in Jefferson and Berkeley
Counties, the Eastern Panhandle. It had been scarce for many years.


INSECTS AFFECTING GREENHOUSE

AND 0 RNAM MENTAL PLANTS

HAIRY CHINCH BUG (Blissus hirtus Montd.)

New York. E. P. Felt (October 25): This season has been marked by its
appearance in numbers farther north than usual, notably !.t Ossining and
Bedford.

SOD 1SBT"Cr;Ci (Crambus sp.)

Florida. J. R. Watson (October 22): Sod webworms are still very abundant and
destructive to lawns and golf courses. They apparently attack equally
all lawn grasses--Brmuda., centipede, carpet, and Saint Augustine.

Louisiana. B. A. Osterberger (October 12): A grass sod worm has been severe-
ly injuring lawns and pastures in many sections of southern Louisiana.
The larvae have been observed migr ting.

CITRUS FUAL'iUG (Pseudococcus citri Risso)

Ohio. E. W. MLndonhall (October 15): The moalyb,.-- arc abundant and injurious
on lantana at Springfield. Treatment given.

COTTONY-CUSHION SCALE (Icerya purchase Mask.)

North Carolina. Mrs. Albert Brown (October 6): "I cut dov:n a handsome mimosa






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tree at Wilmington, which was infested with the scale, and another is
completely covered by the pest..' English ivy is infested, besides bushes
of the shrub 'breath of spring."'

Georgia. J. M. Robinson (October 20): Moderately abundant on rose bushes
at Thomasville on September 21.

WHITE PEACH SCALE (Aulacaspis pentagon Targ.)

Mississippi. C. Lyle (October 25): Specimens of the white peach scale on
peach were received from the county agent, at Fayette on October 11.

Texas. F. L. Thomas (October 22): This insect is abundant in Harris and
Galveston Counties. Has spread to the 'central part of the State, where
it is attacking ornamental shrubs, mulberry, and Chinaberry. It has
failed to maintain itself in some locations of central Texas.

AZALEA.

A STE' BOHER. (Oberea s Hrald.)

Delaware. E. P. Felt (October 23): Somewhat common in azalea stems at V.'ilming-
ton.

CAN-A

LARGER CIA1TA LEAF ROLLER (Calpodes ethlius Cram..)

Massichusetts. A. I. Bourne (October 19): In a rather restricted !rea around
New Bedford, in the extreme southeastern part of the State, considerable
damage was being caused to plantings of canna. The species is a rather
common pest farther south but so far as I know this is the first report
of serious injury in l..k sachusetts.

CEDAR

A SCALE (Eriococcus' gillettei Tinsley)

Nebraska. M. H. Swenk (October 20): On September 25 a 10-year-old cedar tree
in Saunders County was reported to 'be'infested. '

EUOINYMUS

E7OiYtJS SCALE (Chionaspis euonymi Comst.)

Pennsylvania. E. P. Felt (October 25): Somewhat abundant on pachysandra in'
the Philadelphia area.

GLADIOLUS

THRIPS (Thysanoptera) ...

Florida. J. R. VJatson (October 22): A survey of the young gladiolus plants








in Min'?tee County revealed a very light infestation of Frankliniella
fusca Hinds (tobacco thrips)'but none of Teoniothrips simple :.:orison.

Minnesota. A. G. Ruggles (October 18): Gladiolus thrips are very numerous
in untreated plantings this year.

COPR EAR !'OR: (Heliothis obsoleta F.)

Florida. J. R. VWtson (October 22): .,.a doing more damage to gladiolus than
any other insect, mining not only the unopened flowering spikes but in
many instances the main stem of the plants. Also damaging young tomato
plants by mining the stems.

BEET A Y?.0R (Lphygma exigua Hbn.)

California. R. E. Campboll (October 22): The infestation in Vista, San Diego
County, is extremely heavy and almost ruined a planting of 3 or 4 acres
of gladiolus.

LILAC

GIANT HOCTIET (Vespa crab .)L. )

Marylind. E. -N. Cory (Octobcr 18): .Uotd :n lilac in Kent C unty. This is
n new locality record.

ORCHID

ORCHID WFEVIL (Dior,'rrellus laevimarg3 Champ.)

Delaware. H. F. Dietz (October 4): This pest has been causing considerable
injury to Cattleyas and Dendrobiums in orchid houses around Wilmington.
The injury is greatly out of proportion to the number of beetles it has
been possible to collect. This is accounted for by the fact that minor
feeding injuries to the roots become infected .,ith an unidentified fungus
which results in the death of these'roots.

Ohio. E. V'. Mendenhall (October I): Black Diorymerellus was quite bad in an
orchid'hodse at Columbus. Treatment was given.

2 .". '

JAPAIZ:SC SCALL (Leucaspis japonica Ckli.)

Pennsylvania. E. F. Felt (October 2 ): "',as found in abundance on a privet
hedge in the Philadelphia area.

RHODI r :0 D D

A7ALEA SCILE (Eriococcus azelease Co t.)

',est Virginia. F. V.. Craig (September 28): I have never found any scale on






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rhododendron in this,State until last fall., when it was found on one
plant at Moundsville. The plant was sprayed twice last winter with
o'il. At present there id still live scale on this plant and addi-
tional plants have been infested./ (Det. by. H. Morrison.)

ROSE

ROSE SCALE "(Aulacaspis rosae Bouche)

Ohio. E. W. Mendenhall (October 1); Quite bad, on,roses in certain localities
in Franklin County. Stocks were plastered.



I N S 7 C TSZ' 'A T'TA C K I N G M A N.A N D

DOME S.TI .AN IMALS

MAN

A SANDFLY (Culicoides canithorax Hoff.)

Georgia. J. B. Hull (September3O0)': Sandflies, particularly C. canithorax,
began emerging at Savannah during the latter part of September, and from
the increasing numbers taken in recovery cages it is indicated that the
emergence of the fall brood of this pest has begun.

PUSS CATERPILLAR (Megalopyge opercularis S.. & A.)

South Carolina. F. Sherman and 'W C. Nettles (October 16): Several inquiries,
and as usual they are chiefly with reference to stings by the larvae.

Alabama. R. K. Wilson (October 21): .Larva received from Dothan for determina-
tion. The specimen was taken from the arm of a' patient in whom it had
produced pain and a local urticaria,

Mississippi. C. Lyle (October 23): Specimens were received from Kosciusko
on September 50 and from Wesson on September 23. Inspector N. D. Peets,
of Brookhaven, writes that several specimens were brought to his office
with the information that the people who had been injured by them ex-
perienced severe pain and fever.

Texas. W. E. Dove (October 25): Within 50 miles of San Antonio different
persons complained of painful'stings of this caterpillar. On several
occasions it was encountered in public parks during the month of October.

SADDLEBACK CATrERPILLAR (Sibine stimulea Clom.)

TThryland. E. N. Cory (October 1): Seemed to be unusually abundant generally.

TROPICAL RAT MITE (Liponyssus bacoti Hirst.)

Mississippi. J. P. Kisl-nko (October 23): Sever-l homes in Wiggins have been









heavily infested with the tropical rat mite.


BLACK WIDOW SPIDER (Latrodectus mactans F.)

North Carolina. B. H. Wilford (October 30): We found one female in the
basement of a residence in Asheville. Another female w's brought to
the office for identification. There were far fewer calls concerning
black widow spiders this summer than during the same period of 1936.

Nebraska. M. H. Swenk (October 20): Complaints of, and inquiries concerning,
the black widow spider continued to be received during the entire period
September 20 to October 20.

DOG

BRO1N DOG TICK (Rhipicephalus sanguinius Latr.)

Maryland. E. N. Cory (October 18): We have recently received a report from
Towson. One or two records each year for the past 4 or 5 years of in-
vasion of homes by this southern tick. :
Illinois. C. L. Metcalf (October 12): We have a report, accompanied by a
specimen from Waukegan, of a dog heavily infested.

SUCKING DOG LOUSE (Linognathus pilifmrus Burm.)

Ohio. J. S. Houser (October 4): Specimens forwarded from Cleveland taken from
a dog.

CATTLE

SCREW'VWORM (Cochliomyia americana C. & P..)

South Carolina. K. Dorard (October 23): Reduced numbers of cases were re-
ported during the month. For the week ended October 8 there were 94 new
cases; by October 15 there were 72 new cases; and on October 2-, 81 new
cases were estimated in the State. The principal infestation continues to
be in Colleton County. Single cases occurred in Lexington and Barnwell
Counties, the most northern record of the season being 7 miles east of
Lexington.

Georgia. R. A. Roberts (October 23): The greater inf-station occurs in Seminole
and Decatur Counties, also eest and south of a line of counties indicated
by Grady, Colquitt, Tift, Telfair, and Emanuel. During the last 2 weeks
a reduction of approxir'.m-tely 20 percent of the cases first occurred in
the southeastern counties and was later in evidence in the southwv stern
counties. In the northeastern portion, in the vicinity of Bulloch and
Emanuel Counties, cases continued with a high incidence.

Florida. R. A. Roberts (October 23): Reports of 1,247 cases, including four
representative counties in the State (Madison, Levy, Polk, and Glades)






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show progressive decreases in the incidence of cases. The rates of
occurrence among 100,000 animals were: October 8, 1,036; October 15,
527; and October 25, 439. The extent of spread of the infestation in
western Florida includes 50 cases :in: the eastern portion of Jackson
County. No cases were found west of Marianna.

Alabama. R. A. Roberts (October 23): During the past 2-week period 25 cases
occurred in Houston County, but were.treated promptly. They were reported
in the vicinity of Cottonwood and Crosby, and specimens were identified
from Gordon. On October 26 no new cases were found in Houston and Henry
Counties nor in the stockyards at Montgomery. ....

Missouri. G. D. Jones (October 18): Last week the county agent in Jackson
County reported several cases in that county this fall.

Kansas. W. E. Dove (October 25): Three hundred and forty-five cases were
reported in Butler County by the county agent. .

Texas. W. E. Dove (October 30): In the southern counties .of Texas .,5,461 cases
were reported among 1,044,245 animals for the 4-week.period ended October
23. Localized outbreaks occurred in portions of Willacy, Kenedy, Kleberg,
Bee, Refugio, Victoria, Calhoun, Jackson, and .-Itagorda Counties. Of
these, 4,687 cases were attributed to bites of the Gulf.coast tick
(Amblyonmma maculatumn Koch.). Other counties reporting localized outbreks
Were Kinney, Bastrop, Taylor, Fisher, and Dawson. From questionnaires
received from 73 counties, 23 reported no cases during the month ended
October 15. From 50 counties 1,311 cases were reported by stockmen among
92,986 animals, or at the rate of 1,409 cases in 100,000 animals. Cases
were of rare occurrence in eastern and northern Texas. Normally screw-
worm cases are most numerous in Texas from early September until frost,
but this year and last year are said to be exceptions. Some stockmen say
that screwworms are less numerous this year than at any time during the
past 18 years.

Illinois. W. E. Dove (October 30): About 600 cases, were treated in Menard
County since the middle of July. Specimens from one case at Springfield
were identified, and one case was reported from Sangamon County.

GULF COAST TICK (Amblyomna maculatum Koch)

Alabama. J. M. Robinson (October 20): A female of the Gulf coast tick vnwas
taken from the ear of a cow at Citronelle on October 5.

HORSE
T -
HORSE BOTFILTT (Gastrophilus spp.)

Texas, F. C. Bishopp (October 18): About 6 o'clock this evening adults of
G. intestinalis Deg. wer2; observed to: bo vary active laying eggs. on horses
on a farm near Uvalde. The horses were rather heavily infested with eggs,
these being very abundant on the inside of the front legs and reasonably







-467-


abundant on the outside of the legs, on the breast, shoulders, and neck.
One specimen of G. nasalis L. was observed to be ovipositing under the
jaws of one of the horses. A moderate number of eggs of this species
were present on this group of ariimals. D..C. Parman, of the Uvalde
laboratory, states that the bot eggs are much more numerous on the horses
this year than they were last, and last year he reported that bots had not
bce:n observ-d on horses in the vicinity of Uvalde for some years previously.

SHEEP

SH2FP BOTFLY (Oestrus. ovis L.)

Texas. 0. G. Babcock (October): The sheep nose botflies apparently were not
very active during the past summer months at Sonora, but are appearing in
greater numbers this fall.

HOUSEHOLD AND STORED-PRODUCTS INSECTS


TRFC.ITES (Reticulitermes spp.

Massachusetts. A. I. Bourne (October 19): "jW had one instance brought to our
attention ,wh':-re termites were found to be attacking the roots of living
pine trees. This rr-ther unusual outbreak occurred in South Harwich, which
is well on toward the eastern end of Cape Cod.

Illinois. W. P., Flint (October 21): Reports' of termite dan:age continue to be
received, from all parts of central and southern Illinois.

Tennessee. G. M. Bentley (October 10): In strawberry fields in and around
those sections where there have been piles of wood or decayed stumps,
appreciable damage by termites has been done to strawberry plants.

Alabama. J. M. Robinson (October 4): Termites were reported as seriously
damaging the flooring in mills at Anniston. At Tallassee they destroyed
the paneling in the dining room of a t10,000 residence.

Missouri. L. Haseman (October 22): Normally at this season termites are
readily found for class work in practically any x.;ood that has been lyinp
on the ground for any length of time, but this fall they seem to be much
scarcer than usual, indicating perhaps a tendency to cease feeding Early
due to the continued cool weather throughout the ',ronth.

Nebraska. M. H. Sw'nk (October 20): Complaints of damage by termites, R.
tibialis Banks, were r oceived from Otoc, Box Butte, and Kcarney Counties.

Texas. F. L. Thomas (October 22): Termites causing damage in Texerkpne, 3owie
County, September 20; also at Big Spring in Hioward County, September 25.

Nevada. G. G. Schweis (October 20): An infestation of termites occurred in a
dwelling in Sparks and caused enough damage th' t it will be necessary to






-468-


rebuild a portion of the house. The termite.. situation is rather unusual
in western Nevada as up, to about 3 years-*tgo there were practically no
infestations reported to 'the entomologist's office. The last 3 years,
however, we have had several cases where the damage -has been extensive
enough to necessitate rebuilding of at least a portion of the infested
building.

Oregon. R. L. Furniss (September 3): A.'.large and recently constructed house
in Portland was found to be infested with the subterranean termite, R.
hesperus Banks, Rarely reported in Portland.

HOUSE CRICKET (Gryllus domesticus L.)

Minnesota. A. G. Ruggles (October 15): Complaints from housewives of the
crickets invading houses. Very abundant in Jackson County.

ARGENTINE ANT (Iridomyrmex humilis Mayr)

Mississippi. C. Lyle (October 23): Specimens-were received from Prentiss on
October 4. Also these ants are reported causing trouble in the Durant
territory.

BOXELDER BUG (Lepticoris trivittatus Say)

Michigan. R. Hutson (October 22): Boxelder bugs are numerous at Fenton, Farm-
ington, Ann Arbor, and Manchester. .. ::

Minnesota. A. G. Ruggles (October 18): Reports just beginning to come in this
month. Reports show them to be as abundant as in, other bad years,

Iowa. H. E. Jaques (ctobebr 18): Continues to be very annoying in many re-
gions throughout southern Iowa.

Kansas. H. R. Bryson (October 23): This species is more abundant at Manhattan
than last, judging from the numbers seeking hibernating quarters on. the
south side of buildings.

STRAWBERRY ROOT WEEVIL (Brachyrhinus ovatus L.)

Minnesota. A. G. Ruggles (October 18): Several reports of damage to ever-
greens but move from housewives of the adults getting into houses..

POWDER POST BEETLES (Lyctus spp.)

Maryland. E. N. Cory (October 18): Found in house in Crisfield. ....

Virginia. H. G. Walker and L. D. Anderson (October 26): Several buildings in
and near Norfolk have been rather heavily infested this year.

Michigan. R. Hutson (October 22): Powder post beetles have been reported from
Three Rivers, Cassopolis, Benton Harbor, and Kalamazoo.





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WHITE-.'RK7D SPIDER BE:TLE (Ptinus brunneus Dufts.)

Ohio. T. H. Parks (August SO): Adults and larvae were received from Urbana
with the statement that they were abundant in hog food containing oil
meal, tankage, and other ingredients. They w:ere also eating holes in
the bags and causing loss of the feed. The feed h--d been in storehouse
only 40 days.

AIJOBIIDS (Coleoptera)

Connecticut. N. Turner (October 4): At Middletown floor badly damaged by
Anobium punctatum Deg. The flooring was apparently native lumber. Scraps
of wood in the basement and newly built basement partitions were also
attacked. (October 22): Two colonial buildings in the State were ex-
amined within a week and found seriously infested with Xestobium rufo-
villosum Deg.

A DERMIESTID (Dermestes cadaverinus F.)

Louisiana. M. D. Leonard (September 13): Specimens from Shreveport were
sent in for identification stating that a considerable infestation was
found.-... .

CIGAREPTTE RiE-TLE (Lasiodenmna serricorne F.)

Nebraska. M. H. Swenk (October 20): The cigarette beetle or tow-bug was re-
ported to be found all through a house in Douglas County on September 23,
while on October 18 this pest was infesting overstuffed furniture in
Jefferson County.

CO:,7FTSED FLOUR -EETLE (Tribolium confusur.: Duv.)

Iowa. H. E. Jaques (October 18): Complaints of the confused flour beetle as
a pest of local flour bins have been received from Lit. Pleasant.

PEA ..T:VIL (Bruchus pisorurrm L.)

Iowa. H. E. Jaques (October 18): Pea weevils have been reported with their
usual destruction to garden peas.

A LATHRID (Cartod:ere costulata Reit.)

Connecticut. E. P. Felt (October 23): Was reported abundant in a Stamford
dwelling to such an extent as to cause apprehension. They were suffi-
ciently numerous on the walls that they w-ere comparatively easy to capture.
It developed that the house had been closed during a portion of the sumr.ur
and was unusually damp and moldy.

I$IAII-:.XAL MOTH (Flodia interpunctella Hbn.)

Iowa. H. E. Jaques (October 18): Hrs been making its appearance in homes and
grocery stores whore it is a pest in food products.






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BOOKLOUSE (Troctes divinatorius Mull.)

New York. M. D. Leonard (October): Present in such great numbers over a
period of several weeks this fall in apartments and dwellings in New
York City as to elicit several newspaper accounts of the infestations.



INSECT CONDITIONS IN PUERTO RICO

By G. N. Wolcott
Insular Experiment :Station, Rio Piedras

The past spring and summer in th: more humid part of Puerto Rico has been
unusually dry, and the autumnal rains have: been less than normal. The chinch
bug (Blissus leucopterus Say) was noted in considerable abundance on the upper
leaves of young sugarcane plants at Rio Grande and Canovanas a few days ago,
something I have never seen before.

An outbreak of the pyralid caterpillar, Pyrausta cerata F. (:Epicorsia
mellinalis Hbn.) on the leaves of the pendula tree, Citharexylum fruticosum,
has recently been noted at Humacao, Maunabo, and Arroyp, in the southeastern
corner of the island, and also at Bayamon, Cayey, and Caguas in the interior,
and at Isabela and Aguadilla in the northwestern corner, presumably being
general wherever the host tree is present.




: INSECT CONDITIONS IN GUAM -- JULY AND AUGUST 1937

By R. G. Oakley
- Agana, Guam

The attacks of the melonfly (Bactrocera cucurbitae Coq.) probably of
recent introduction into Guam, were general in most community centers and in
a few isolated cucurbit fields during July. Infestations reached as high as
100 percent in some cases. The prevalence of wild papayas over the island and
a local cultivation practice of often abandoning cucurbit fields to weedy
growth and the development of small melons after the commercial crop is picked,
is very favorable to the development of a large population.

The bean leaf roller (Lamprosema diemenalis Guon.) was very abundant on
string beans and as a minor pest on other legumes in July. It was not uncommon
to find 50 percent of the leaf surface of string beans infested. (Det. by 0.
H. Swezey.)

A squash bug, Leptoglossus membranaceus F., commonly infesting a number
of hosts, was doing considerable damage to cucurbits and string beans in July
and August. In one field dozens of bursted watermelons were completely covered










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and hundreds were feeding heavily on papaya seedlings. (Det. by H. G. Barber.)

The chrysomelid Fhytorus pinguis Baly. has been observed to be the most
prolific insect every to have been seen by the writer. Its attacks are espe-
cially severieon breadfruit and mango, the latter being often defoliated. Four
wild hosts are also heavily infested and a number of others seem to be satis-
factory hosts. It is sometimes found doing minor damage to vegetable crops.
No immature stages have been found as yet. (Det. by 0. H. Swezey.)





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