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Technical papers on miscellaneous forest insects

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Title:
Technical papers on miscellaneous forest insects
Series Title:
Technical series / United States Bureau of Entomology ;
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United States -- Bureau of Entomology
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Washington, D.C.
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U.S. G.P.O.
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English
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x, 185 p. : ill. ; 23 cm.

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Forest insects ( lcsh )
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serial ( sobekcm )
bibliography ( marcgt )
federal government publication ( marcgt )

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Bibliography:
Includes bibliographical references and indexes.
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Published separately with continuous numbering.

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University of Florida
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This item is a work of the U.S. federal government and not subject to copyright pursuant to 17 U.S.C. §105.
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029621745 ( ALEPH )
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632 ( ddc )

Full Text

STATE PLANT BOARTP
TECHNICAL SERIES, No. 20, PART IV.
U. S. DEPARTMENT OF AGRICULTURE,
BUREAU OF EN'lN)OM O()A(FY.
L. O. HOWARD, Entomologist and Chief of Bureau.



TECHNICAL PAPERS ON MISCEILLANEO(US
FOREST INSECTS.



IV. STUDIES IN THE SAWFLY GENUS

HOPLOCAMPA.




BY

S. A. RO-LWER, Agent and Expert.



ISSUED MAY 27, 1911.



















WASHINGTON:
GOVERNMENT PtINTING OFFICE.
s 1911.
























B UREA F! OF E.V TOMOLOG 17'.

L 0. HOWARD, Entomologist and Clll;(,f (,f Burcatt. C. L MARLAvr, Entomoloyist and Ach'nj Chitf in Absew-,: of (I'll I If.
R. S. CLIFTON, Erici&'rr A&;1*Stan?.
W. I". TASTET, CUtf Clerk.

F. 11. ('11IT-rENDEN, in, truck crop andstored product iiisect I*o rest nations.
A 1). 11OPKINS1 'in, chw-yr offorest 1'11srot io ccs6qations.
W. D. If UNTER) 'in, charge cfsotala,/ o lif,]d cropinset-t iniestigal ions.
F. 1. AVEP TER, in, charge of cereal andfora-re bisect inrc,,41-liations.
A. L. QUAINTANCE1 'in char.qc of III-Seet I n rcsti ,Jations.
E. I". PHILLIPS) in (-harf,,e (y'bfr ctilhirc.
D. M. 11w.Fitsi 'in, charge (!f -moths, field work.
ROLLA P. CURRIE, I'a charge ofr(Por;al irw-T.
MABEL COLCORD, ltblyll- fall.

FOREST 1-04Ecr I\-%-i--.-;-rmAT10NS.

A. 1). ITOPKIN-S, in char,,;e.

11. E. J. L WEBB, JW-1-A-' BRUNNER) S. A. IlmlwEnl T. E. SNYDER, W. D.
W. B. TURNt:it, agents and ciperts. prel)(1ratol'.
MARY C, J()HNSON, ;hl(h 0 (IS-siShIldS,
























CO N T B N TS.


Introduction -- - - - - - - - - - - - - - - 139
Hoplocampa (Maegillivrayella) pallida n. sp--------------------------------- 141
IHoplocampa (floplocainpa) orb italis n. ------------------------------------ 141
Hoplocampa iloplocam pa) koebelei ni. sp----------------------------------142
Hoplocampa (Ifoplocamnpa) alpes/ris n. SI)------------------------------------ 142
Hoplocampa (Hoplocampa) californica nI. sp -------------------------------- 143
Hoplocampa (lloplocanipa) mariatti n. s ----------------------------------- 143
Hoplocarnpa (110 plocampa) nevadensis n. Sf)------------------------------------------143
Hoplocampa (Iloplocarnpa) xantha n. sp----------------------------------- 144
Hoplocampa (lb plocamnpa) occidentalis n. sj)-----------------------------------------144
Hoplocampa (Iloplocam pa) mon/an icola n. sp)---------------------------------------145
Hoplocampa (Iloplocampa) halcyon (Norton-')-------------------------------- 145
Iloplocampa (Ilopiocam pa) b joc la Ia Roh wer ------------------------------ 146
Iloplocampa (Iboplocam pa) pallipes MacGill ivra --------------------------- 14 6
Selandria canadensis Prox-ancher------------------- ---------------------- 146
Selandria flavicorn is Provancher ----------------------------------------- 146
116plocampa (?) atriceps Kirby------------------------------------------ 147
Hoplocampa lenis (Cresson) and Iloplocampa spissipes (Cresson"--*----- 147 Hoplocampa gentilis (Cresson) and HopocamXL mon lana (Cresson,---------147 Tenthredo (Allantus) obtusa Mlug------------------------------------------1,47
Synoptic table to the Nearctic species of the subgenus Iloplocamnpa -----------147

797830-11










I LLUSTR AT 10 NS.


PLATES.
Page.
PLATE XXIII. Fig. I.-Hoplocampa (.1facgillivrayella) oregonensL;: 11'ront view of head -------------------------------------------------- 148
Fi(,. 2.-Hoplocampa Hoplocampa)flam: Frontviewof head- 148
Fig. 3.-Hoplommpi (Hoplocampa) orbitalis: Saw ----------- 148
Ficr. 4.-Ifoplocumpa (11oplocampa) ?., ontanicola: Saw -------- 148
Fig. 5.-Ilop7ocutnpa (Iloplocampa) ulpcstris: Saw ............ 148
Fi(r. 6.-Hoplocumpa (Hoplocampa) koebf-Ici: Saw ............ 148
In Ioplocampa (Iloplocao pallipes: Saw ----------- 148
i(r. I.-I yal
Fi(r. 8.-Hoplocampa (Iloplocampa) halcyon: Saw ............ 148
Fi(r. 9.-Iloplocampa (Hoplorampa) xant1w: 'Saw---...... 148
Fig. 1O.-Hoplocampa (11oplocampa) nt r(idcixis: Saw ......... 148
XXIV. Fit),. I.-Hoplocampa (11oplocampa) xanth(t: Sheath ........... 148
Fity. 2.-Iloplocampa (Hoplocampa) pallipes: Sheath ......... 148
Fiff. 31.-Hoplocampa (11oplocampa) koeb(,I(,i: Sheath .......... 148
Fi(r. 4.-Iloplocainpa Sheath ------ 148
F (r. 5.-Hoplocampa (floplocampO alprmYIS: Sheath ........ 148
Fi,,. 6.-Hoplomlapa (Hoplocampa.) montm, rola: Sheath .... 148 Fi(,. 7.-Iloploc(mya (11oplocampa) marl(itti: ....... 148
Fi(,r. 8.-Hoploc(impa (Hoplocampa) occ I *(hlit(ilis: Shezidl .... 148 Fi ().-Hoploc(impa (Hoplocampa) halcyoli: 'Sllez1fli ....... 148 Fi(r. 1O.-Hoploc(impa (Hoplocampa) orbitall's.- She ith ......... 148
Or. I.-Hoplommpa (Hoplocampa) alpestris: Male, anterior x x V. I i :77
NA-ing --------- 148
t-, - - I I W I I I I I ------------------------14 ig. 2.-Hoplocampa (Hoplocampa) halcyon: Male, anal cell of fore w in',I ................................................ 148
Pig. 3.--11()pI()catn.pa Iloplocampa) niont(Micola: 1"Omfle, four h.t-zil interinal joints ------------------ 0 .............. 148
Fi(r. f. Hoplocampa (Hop1r)mInpa) Female. ftmr
bil- A miteni-m l Joints -------------------------------------- 1-18
-.-IIopI()cawpa( 148
Fi!,. (;.-- Hoplocantpa (Hoplocampa) m mi la ii rola: Li I e antenna ........................ 0 ........................ 148
'K' Vl. 1. -Hoplocampa. (Iloploc(lmpa) F('111,11o, radi.11
in 1,()t.(, w ing ......................................... I 4S
2.-- 11oplocampa (Hoplocampa) halcyon: Femalle, redial 111,0A in f,)I-( w ill'? 14S
.......................... 0 ...... ........
Fit 11oploc(Impff, (Hoplocampa) monlanicola.- Foum1r, I'AdIA tirvit In wintr I-is
.. .....................
1, 1 1. -.4 1opl(w(11111)(I ( .1bIcI'jI*M rj-(IY(-1,(1) fifclr p' Felli"11c, f''fv . .... 0 0 . 0 ........ 00- .000... 1.18

TEXT FIGURF,

i 1, 4 if t ll(- I'm i I I Lr Olt o I i -; I ri 1) lit im l ()f t 11 (' gel I I is 11(y 1octi m p(l. 140













U. S. D. A., B. E. Tech. Ser. 20, Pt. IV. F. I. I., May 27, 191 I.

TECHNICAL PAPERS ON MISCELLANEOUS FOREST INSECTS.


IV. STUDIES IN THE SAWFLY GENUS HOPLOCAMIPA.
By S. A. ROHWER,
Agent and expert.
INTRODUCTORY NOTE.
[By A. D. HOPKINS.I
This second contribution by Mr. Rohwer to technical information on the sawflies, while not treating of species of known economic importance in their relation to forest growth, conforms to our plan of giving in one series of publications the results of the necessary general studies, by a specialist, of the entire group represented by species and genera which are of special economic importance. This not only gives the economic entomologist a comprehensive view of the whole group, but makes available information on species which may prove to be injurious to indigenous or cultivated plants.
INTRODUCTION.
In the Canadian Entomologist the author has a paper treating
the sawfly genus Iloplocampa IHartig through the subgenus Macgillivrayella Ashmead. The present paper treats the Nearctic species of the subgenus Iloplocampa, including also a description of a new species belonging to the subgenus ilacgillivrayella.
The accompanying map (fig. 10) gives, in general, the distribution of the genus. Macgillivrayella apparently does not occur in the
Palwearctic region. In America the species of the genus will probably be found to occur from the Lower Austral Zone to the lower border of the Boreal Zone.
The species of this genus are small, closely related, and without striking specific characters. The characters used in the following table were found to be reliable, but the saw of the female should be examined when possible. Lacking a large number of males, the male genitalia were not studied, but, judging from the genitalia in other genera of sawflies, they may be expected to possess good specific.
a Can. Ent., vol. 42, pp. 242-244, July, 1910.
139







140 MISCELLANEOUS FOREST INSECTS.






~1i~F~ _0Af

















40






THE SAWFLY GNUTS IIOPIAOCAMIPA. 141

characters. The color, in details, is not constant, although a 11orinally black or brownish species was never founi( to b)e uniformly pale, or vice versa. The venation, as in manyv genera, is (conistatint to tihe typical form. The length of the upper and lower d(liscal cells of the hind wing apparently varies within a species (as in Hloplocampa marlatti).
The descriptions were drawn up under a Carl Zeiss binoular with a magnification of 35 diameters, although a Zeiss hand lens, magnifying 27 and 16 diameters, was use(l for the color description and checking up.
The generic description given in the Cana(dian EnIltomologist a should be corrected and elaborate(d as follows: Proepimerum (Epml) present.
Mesoprepectus (Ppct2) present.
Pleural suture of metathorax (PS.) straight from the coxal process (CxP3) to the wing process (W Pa), not curved as in Nematine. Metascutellum (SCl3) rather large.
Metapostnotum (P N.) as in Nematinw.

Hoplocampa (Macgillivrayella) pallida n. sp.

Runs in the table in the Canadian Entomologistb to lacteipennis Rohwer, but may be separated from that species by the large depressions between the ocelli and orbits, higher, narrower occiput, paler color, etc.
Female.-Length 5.5 mm. Head distinctly higher than broad, broadest just above the antennae; labrum rather broadly rounded; clypeus with a deep, obtusely V-shaped emargination, lobes obtusely triangular; supraclypeal area more convex near the clypeus; eyes diverging toward the clypeus; lateral fovee close to the antennae, small, punctiform; antennal furrows not continuous; crest rather well developed; frontal area raised; ocellar basin and middle fovea wanting; postocellar area not defined; vertex depressed on each side of ocelli, so that the occiput is much narrowed; antenna slender, third and fourth joints subequal; shining, practically impunctate, cerci tapering; sheath straight above, gently rounded below; stigma broad, slightly broader basad of middle; transverse radius received in middle of cell, nearly at right angles with the radius; upper discal cell of hind wings slightly exceeding lower on the outer margin. Pallid; legs, antenme, front, and dorsulum pale yellowish; wings strongly milky-hyaline: venation pallid-hyaline, except stigma, which is yellowish.
Type locality.-Michigan. One female from C. F. Baker collection.
Type.-Cat. No. 13469, U. S. National Museum.

Hoplocampa (Hoplocampa) orbitalis n. sp.
(Plate XXIII, fig. 3; Plate XXIV, fig. 10.)
Female.-Length 4 mm. Labrum broadly rounded apically; clypeus rather deeply emarginate, lobes obtusely triangular; supraclypeal area convex, polished; antennal furrows and postocellar area as in koebelei;, middle fovea elongate; ocellar

a Can. Ent., vol. 42, p. 242, July, 1910. b Can. Ent., vol. 42, p. 243, July, 1910.






142 -MISCELLANEOUS FOREST INSECTS.

I)asiii V-slial)(,d, .,peii below; crest poorly defined'; head with small, scattered punctt1l.(--:-. alitefill;1, ratli(!l, rol)tist, third and fourth joints equal; stigma broadest at base, taiwriiicr tk) ap !x; iran-%-(,r_- e radius normal; sheath and saw as in Plate XXIV, fILurf, 10, aiid Plate XXIII, figure 3. Black; antenna, brownish; head (except beT aiiteiiiial ftirrows above antenna-,), tecrtila-, spot on lower angle of pronotum,
aji( x if :Aieadi. and leas below cox e reddish-yellow; posterior tibia pallid,
arsi dti-ky; wijigs hyaline, iridescent; venation pale brown, stigma and C-I J N

Type. local )/.-Montana.
Type.-Cat. No. 134-2, U. S. National Aluseum.

Hoplocampa (Hoplocampa) koebelei n. sp.
(Plate XXIII, fig. 6; Plate XXIV, fig. 3.)
Feloo7t.-Leiigyth mni. Labruni broad, obttisely triangular; cly eus broadly,
triaii-tilarl-v, eiliiaro-iiizite. lobes 1)road sharply triangular; supraelypeal area convex, poli,4jed; witetinal f,)ve t, lilt Aiarply defined; antenna furrows nearly continuous; nii(l(lle fox-ea traiisv( rl-(,I : oval.; crest poorly defined; cellar basin re(hiced to a pit below the postocellar -area well defined, the furrows punctiforin laterallyalttemizv wLtntiii -, liead with small, 7 C
distinct separate ptinctures; isti-iiia gently rotimie(l hr()a(lest, a little basad of middle; transverse radius nominal; upper
cell of hiti(t longer than lower; sheath and saw as in Plate
_N _N I VI fill t7l
crIll.e all(l Plate XXIII ffirtire 6. Black; head (except inside aweiiiial fiirrNv,; io ftirrmv), proiiotiim, te(Irtibe, venter, apex of terginn, and le-s
bAow trocljaiiter- roddish-vellow: i)osterior tarsi dtisky; wings hyaline, iridescentveiiatioit pale br,)Nvii, stlo'I'lla, pallid.
TypI, loc(ill/Y.-Oregon. One feniale collected bv Mr- Albert Koebele.
Type.-Ctit. No. 1341-31 U. S. National Museum.

Hoplocampa (Hoplocampal) alpestiis n. sp. Nial X X111, fig.'5; Plate XXIV, fig. 5: Plate XXV, fig. 1.)
1..-) 111111. Labrtiiii ol.)ttisvl%- clypeii ,i ivith a shallow,
narr(m-, arcit-vto emm,_,iiiatioii, 1()he J)i,()ad, obti, (-, supraclypeal area coin-ex, polislw (l; allt(-Illi ll 1,1)vl-;(, m tclillzll flll.rm v 4 llezirlv w Illt ill(,,, liliddle fovell
betic). dehlw(l beb'w: ocellm. 1)ZlSlli redliccd to a circtilar depressioll ill frolt of 11w Itlteriorocvllu,;; postocell"'r vel-y Imm-lydeiiiied; head polislied, iwarly illiplificlato. pim (iiin- \(,r v suiall alld alflefilize slelider, t1le Illird zill(t follf-Ill joillts,11),(-(111 11: fill lionix slihiiffiv, lm lisbe(l; stigiiia bi*()ad(,.-t 0 base, 111pel11* lll-\-(,). -( )- l(liti, li()?-Il l-,Il; s1wittli zm (l ,aw as iii, Plate _N N IV, -e5,,m J Plalv XX111, 10ack. (wbit -z (( Xuepf at lipper mid(110, cl.ylwll labl-11111,
TD:tfidiblos, stipr I Nlw d area, zt 4potoll clltf.,d 1),11.1 of ter"ral
livalille: vellation I-a(lier
(Lirk bro"-j),
111111. Sli-lirlilr.dly not, dlffcril), ill ally im polIalit ullal-,Ictel* 4 frioll ille hro.ldly rotijided 1() Ili ()blusely aii-tilate iiiiddle.
.11-()IllJd Ill(. (wel1l, .1111cf-i(w part (if l1lesopf".1-111,11111, Illefallollilli, 11)d 1111):-l ()f t, 1-11111 hlluk will'-s is M felliale.
T 1//)( Yet") Pw-- ,,, Gil(). Tw() femah-, 1111d mle Inale (.()Ilculcd 11mc 11, hY Mr. A. Schw'.11.z.
TYI)i C,1 t N (). 1,l)-l 7-1, U. 6. IN national Museum.






THE SAWFLY GENUS IIOI'PLOCAMPA. 143

Hoplocampa (Hoplocampa) californica n. sp.

Allied tobioculataRohwer, but may be separated( by 1thei table (p1). 147).
Female.-Length 3.5 mm. (lypeus broa(llv, shallowly, anrigulately emarginate, lobes broad, obtusely triangular; supraclypeal area convex, finely granular; aniei al furrows wanting, antennal fovee small; middle fovea elongate, shallow, not well defined; ocellar depression small, distinct, not sharply (defined; postocellar area well defined on all sides; head and mesoscutum with small, separate, well-defined punctures; antenna rather slender, third and fourth joints equal; sheath slightly conclave above, slender, convex below from apex; cerci short, stout; stigma broadest near base, strongly tapering to apex; transverse radius strongly oblique, in apical third of coll; third cubital cell longer than the first and second combined. Black; clypeus, labrum, mandibles (except p)iceous apices), orbits, occiput (except postocellar area), tegulaw, anterior legs (except coxe), intermediate femora, and part of posterior femniora reddishyellow; posterior femora in part, most of four hind tibiw, and tarsi black or brownish; wings hyaline, iridescent; venation pale brown, stigma in part pallid.
Paratopotypes show that the four hind legs may be mostly black, the posterior orbits pale and the pale spots on the occiput reduced in size.
Male.-Length 3 mm. Clypeus more obtusely emarginate than in female; third joint shorter than fourth; stigma not strongly tapering; hypopygidium narrowly rounded at apex. Black; antennae, head (except interocellar area), margin of mesoprescutum, lati, pectus, legs, and venter reddish-yellow; wings as in female.
Type locality.-Suisun, Cal., March 10, 1910 (R. W. Braucher); eight females and one male.
Type.-Cat. No. 13471, U. S. National Museum.

Hoplocampa (Hoplocampa) marlatti n. sp.
(Plate XXIV, fig. 7.)
Female.-Length 3 mm. Labrum short, broadly rounded; clypeus shallowly emarginate, lobes broad, obtuse; supraclypeal area shining, convex; middle fovea broad, not sharply defined, spreading over the antenna; antennal furrows interrupted by the rather well-defined crest; ocellar basin represented by a small fovea in front of the anterior ocellus; postocellar area scarcely narrowing apically; postocellar furrow strongly arcuate; front shining, with separate, well defined, small punctures; antennae slender, third joint distinctly longer than fourth; venation very like montanicola (Plate XXVI, fig. 3); upper discal cell much exceeding the lower on the outer margin; sheath as in Plate XXIV, figure 7; saw concealed. Color reddish-yellow; antennae brownish; spots on mesoscutum, the metanotum, and the tergum (except apex) black; tarsi dusky; wings hyaline, iridescent; venation pale brown, stimna yellowish pallid.
Male.-Length 2.5 mm. Very like the female. Hypopygidium broadly rounded.
Type locality.-Riley County, Kans. Four specimens collected
by Mr. C. L. MAlarlatt in April.
Paratype locality.-Baldwin, Kans. Two females collected(l by i Mr.
J. C. Bridwell.
Type.-Cat. No. 13477, U. S. National Museum.

Hoplocampa (Hoplocampa) nevadensis n. sp.
(Plate XXIII, fig. 10; Plate XXIV, fig. 4; Plate XXV, fig. 4.)
Female.-Length 4.5 mm. Labrum short, broadly rounded apically; clypeus shallowly, arcuately emarginate, lobes short, broad, obtusely rounded apically; supraclypeal area shining, not strongly convex; middle foven poorly defined: antenual






144 MISCELLANEOUS FOREST INSECTS.

furrm- not ivell defiiied, (wellar basin pra(,tic,,,11N- Nvanting*; postocellar area- well d(,tiowd. th(, lw- tocellar iurrow curved; head with sniall, distinct, rather close pinictur(-: anteim e rather slender, third joint distinctly longer than fourth; venation II(I'lli'ly as in moitlool'colu (Plate XXV1, fig. 3); sheath and saw as in Plate XXIV, 11,_,111v 4. and Plate NX111. figure 10. Color reddish-yeIlow; antennae above, inter('1Lr area with two proiiI,_,s before, posterior face of mesoseutummetathorax (except
alld terguni ((,xcept apex and si, black; wings hyaline, iridescent;
%J,11"tl 1101 V(Ttm-i-11 palli(l.
Typ( lo(wil't.q.-Nevada. One feniale.
Type.-Cat. -No. 13477.5, 1'. S. National.Nluseum.

Hoplocampa (Hoplocampa) xantha n. sp.
(Plate XXIII, fig. 9; Plate XXIV, fig. 1.)
Ft 4 min. Labrunt, rather narrow broadly rounded; clypeus somevvhtt squaiv!%- eniar ginate, loboi broad, subtruncate; supraclypeal area sbinii raffler st n) I 1, ,Yl y cwivex; III iddle fovea deep, well. defiiied, rather small; antennalfurrowsiiiterriij)t( d by the rather distinct crest; cellar 1) 11 iT1 very shallow, practically Nvaiitlihy; 1)() Pa ra t (q) otylws indicate that the tergum, except apex and sides, i, normally black; v(,I1z0i()I1 Ilorilially as in halcyon (Plate 'XKY'l, fig. 2), with a narrower stignia. The iit( nwellarar(a may I)o hLick; the nii(1(11( fwvea sintaller thau ill type.
T i1pe locality.-Ot tawta, Canada. Four fennfles f roin the Ashinead
(-ollection.
Type.- --Caf. Nio. 13478, 1'. S. 'N'atiomal Museum.

Hoplocampa (Hoplocampa occidentalis it. sp.
(Plato XXIV, fig. 8: Plato XXV, r". 5,)
Lell ,Ili I 111TI". 1, lhrlilll Iiiii-nm Iv r('1111ded 'lpically; (IN-1w ils all"tilatelv iii-ar,_,iiiate, lolles Irizill(-rular, iuii-rmN1v (,hlii e; slipnwlylwal area cozivex dorsally, 141111111 litiddlo fovea ()%-(,r Ilic m ociiii,--V. sb-illow ; atilem :,il l'urrim s iliterrtil)Wd hv flie hroad ruiuulcd crc:- t; occllar Lzi -:ln large, well (Iclijicd, wit1hie: p)st(K-ellar,,trea scarcely iiarrowc(l Imsteriorly, flat Imsim-clLir furrom- iiezirly strai,-dil; irout with i-alher cl() (, Tiiall I)miclures; aTit(,Tmzt rallier robiisl. Ilic third 111)(I fourth johils (-qtizill veiiitioii iw irly as in molit(inicol(i 11. X XVi, M health tj i I I Na t c X X I I I r( S sa NN hi-mvili"11
ilh''%(,: illl( vocelll!- lar ,e "p")l ("ll Ill 11111, sillall 'Jw ls ol' lll', so scllllllll,
th'. m #.1,111(dillil, lllkl Ille t(,ILtllll (cv -clo ld( s alld iqw x) h1ack. \\M vs hyaline, iri,%Ot' V I)A e hl-m vil, Illd c(),st", J)A li(l.
I l"i I lw -' -dlw.\ llw l 11w l1w:-4(illottlill l1ltY lw elltirci.y I)A o, ()r the m es(iscinuin may liax I. I\\ oil (,;1( 11 ],d)(" Thw hhwl: 4 tho microrolhir area i!, Nvantiwr ill 4)111(1

1/,//, l" 11L111 ") mill. Vel \ like ffic 6-imdc. subtruncale, with
all Jll'' lll:il(. lill'IdIf'. T lw A lm v Illf, 1.) vm v -'Is foll(m ",: M cs(ll)resc Ill 11111 W illi'm i hLiCk. 11' -Pojthdl 11()Itcd (w lw l: ililer(wellararea 1)ale or I;la(,k,.
In t1w Ow lwzid aii(l iiw,,()n0timi are tisuAly cnlirely I)a1c,






THE SAWFLY GENUS IOPLOCAMPA. 145

Type locality.-Colorado. Two females and three males from the C. F. Baker collection.
Paratype locality.-Oregon. Males and females collected by Mr. A. Koebele. Also a male from Placer C(uiinty, Cal., June, which seems to be the same species.
Type.-Cat. 13479, U. S. National Museumn.

Hoplocampa (Hoplocampa) montanicola ni. sp.
(Plate XXIII, fig. 4; Plate XXIV, fig. 6; Plate XXV, figs 3, i; Plate XXVI, fig. 3.)
Female.-Length 4 rmm. Labrum broadly rounded; (ly)peis rather deeply, subangulately emarginate, lbbes triangular, obtusely rounded; supraclypeal area shining, somewhat convex; middle fovea small, well defined; antennal furrows interruilpted by the rounded frontal crest; ocellar basin shallow, well defined, rectangular in outline; postocellar area narrowing posteriorly, well defined; postocellar furrow arcuate; front with sparse, small punctures; antenname rather robust, third and fourth joints subequal; venation as in Plate XXVI, figure 3; upper discal cell exceeding the lower ork the outer margin; sheath and saw as in Plate XXIV, figure 6, and Plate XXIII, figure 4. Color reddish yellow; antennae beyond scape, posterior part of mesosciut um, the mesoscutellum, the metanotum, and the tergum except apex 1)lack; wings hyaline, iridescent; venation yellowish pallid.
Paratopotypes show that the scape and interocellar area may be black. Male.-Length 3.5 mm. Sufficiently like the female to be easily associated with it. In the following color characters it differs from the female: Antennw reddish yellow, interocellar area black, mesonotum black. Hypopygidium rounded apically to an obtuse angle.
Type locality.-Montana. Four females and two males.
Type.--Cat. No. 13476, U. S. National Museum.
Hoplocampa (Hoplocampa) halcyon (Norton).
(Plate XXIII, fig. 8; Plate XXIV, fig. 9; Plate XXV, fig. 2; Plate XXVI, fig 2.)
Selandria (Ioplocampa) halcyon Norton, Proc. Boston Soc. Nat. Hist., vol. 8,
p. 222, 1861, no. 10, & Y; Norton, Trans. Amer. Ent. Soc., vol. 1, p. 252,
1867, no. 16, & .
In the collection of the American Entomological Society Hoplocampa (Hoplocampa) halcyon (Norton) was confused with Hoplocam pa (Macgillivrayella) lacteipennis Rohwer. That which agreed with Norton's original description, and was from the type locality, has been considered the type. Agreeing with this type, specimens have been seen from the following localities: Ithaca, N. Y. (two females); Canada (one female); McLean, N. Y., May 8, 1891 (male and female); Washington, D. C., April 22, 1885 (one male); Clementon, N. J., April 25, 1909, Harbeck (one male which has the mesoscutum (lark brown). Norton records this species from Maine, Massachusetts,
Maryland, and Saskatchewan.
Konowa states that this species feeds on Amelanchier canadensis. The only statement which seems to indicate such a habit is by NoraZeitschr. syst. Hym. Dipt., vol. 1, p, 174, 1901; or Syst. Zusam. Chalastogastra, p. 46, 1901.






146 All'SCELLANEOUS FOREST INSECTS.

ton: a Taken in April for successive years in Baltimore, by Mr. Uhler, on Am(7(mchier canv.densis." Konow I s statement needs verification.
Hoplocampa (Hoplocampa) bioculata Rohwer.
11()p ,-)compa biocdWaRoliwer, Can. Ent., vol. 40, p. 179,1908, Y.
In the collection of the U S. -National Museum there are many feniziles of this species from Colora(lo, two females from Pullman, Wasli. (C. V. Piper), and one female from Oregon (Koebele). There are also males from Colorado.
_Vab.-Length 3.5 mm. Structurally like the female. Hypopygidium truncate api(-ally. Antenme orange color; head with more reddish-yellow than the female, the Imstocellar area always black; legs beloxvcoxw, venter, and apical tergalsegments orange color; niesoprescutum sometimes margined with pale.

Hoplocampa (Hoplocampa) paUipes AfacGillivray.
(Plate XXIII, fig. 7: Plate XXIV, fig. 2.)
lloplocaiiq)a pallipes AlacGillivray, Can. Ent., vol. 25, 1). 239, 1893.
Two feniales which have been determined as tids species are from Pullman, Wash. (C. 1'. Pil)er). AllaeGillivray's specimens came from Sk(.)komish River, AVash.

Selandria canadensis Provancher. Sclawh- '(t canadci,., I*s Pr(,)vancher, Add. Fauui Ew. Canada, pt. 2, 1). 7, IS%5;
1. c., 1). 351.
Tlii,, been lAace(l in Hoploca)npa, but (loes not seeill to below). in this ('Yeini-.. Pi-ovancliei- says: '*L,,i cellule fei.1116(1 '111
Milieu; ailes inferieures-avec, une cellule (liscoldale." Hoplocampa
11,1-, '0v() disc()idtal cells. ill flie collection wrlve- N6111 thi,,. On 1)aLre 351 (L c.), after definiiig Hoplwwmp(i on lm(re 349
c.) zt- follows: "Celltile lance'olele contnacte'Cl Hl I'llilieti: alles infli-ivuiv., il 2 cellide-, di"c()idales", Pi-m-:111eller l)l,1ce'4


Selandria flavicornis Provaticher. biwlr (i.il(iricoriiis Pr()x-ww1wt-, Nat. ('an., -N-(A. 10, 1). 100, 1878.
I)l-mrtallf-hol." placed this as 11 "'vimnylil of JL)p1oc(111q)(1 Imb-11oll
toll. "lle ol-i -iwal (Iescl-iptimi S, V I
-Lvs: "Cellille 1,111c'(d'o 1),t*(G (,." The I.YI)es (4 1111d Ille 111mve ISI)CICIC's 111,1Y I)h1ce these specill'-; ill
diflelvill, (ycm-1.4a.
............... ... .... . .......
4 1114. 'Tcri1hr4,dhii(1;i, mid Vnwend.v 4 Nortli Aiucrica.
< Fr:i111-, AI)w r. %[A. 1, 1). 2.-)'), P 67 (catal(w-tic, 1). IN ').
A d( 1. 1", 1", 1 3 1-) 11 1 SSIS.






THE SAWFLY GENUS HOPLOCAMPA. 147

Hoplocampa (?) atriceps Kirby.

Hoplocampa (?) atriceps Kirby, List Hlym. Brilt. Mus., vol. I, p. 168s, 1882, no. 19, 9 ;
pl. 8, fig. 18.
Examination of the type of this species lpr)ves that it is tihe same as Strongylogaster uncus Norton.

Hoplocampa lenis (C('ressoni).
Hoplocampa spissipes (Cresson).

These two species placed in Cresson's cat alogue (1887) in IHoplocampa belong to Lycaota Konow.

Hoplocampa gentilis (C(resson).
Hoplocampa montana (C(resson).

These two species placed in IHoplocampa by Cresson (1887) belong to Zaschizonyx Ashmead.

Tenthredo (Allantus) obtusa Klug.

Tenthredo (Allantus) obtusa Klug, Mag. ges. Nat. Berlin, vol. 3, p. 55, 1814.

This species has been placed in Hoplocampa by Konow (1905). Klug's original description says: "Die zweite Kubitalzelle nimmt zwei zurficeklaufende Nerven auf, von welehen der zweite dicht von dem Anfang der dritten Zelle sich einsenkt," which excludes it from Hoplocampa.

SYNOPTIC TABLE TO THE NEAROTIC SPECIES OF THE SUBGENUS HOPLOCAMPA.
M ales....................................................................... 1.
Fem ales..................................................................... 7.
1. Hypopygidium not regularly rounded apically, more or less angled at the sides
and apical m iddle................................. .................... 2.
Hypopygidium regularly rounded apically a -............................... 3.
2. Antennae very slender; mesonotum almost entirely pale; hypopygidium obtusely
angled apically ...................................... occidentalis Rohwer.
Antennae more robust; mesonotum black; hypopygidium more acutely angled
apically........................................... montanicola lRohwer.
3. Clypeus nearly truncate, broadly arcuately emarginate (ocellar basin almost
wanting).............................................................. 4.
Clypeus deeply emarginate, the emargination subangulate.................... 5.
4. Mesopleure and pectus black; hypopygidium truncate .... bioculata R1ohwer.
Mesopleure and pectus pale; hypopygidium rounded ..... calfornica Rohwer. 5. Third antennal joint distinctly longer than the fourth; stigma narrow, broadest
basad of middle ..................................... marlatti Rohwer.
Third antennal joint subequal in length with the fourth .................... 6.
a To determine this the hypopygidium should be viewed at right angles. When the hypopygidium is not regularly rounded, the sides are subparallel and the apex slopes off obliquely to an angulate middle.






148 MISCELLANEOUS FOREST INSECTS.

6. Postocellar area well defined, twice as wide as the cephalo-caudal length, flat, stigma narrow. lanceolate cell of the fore-wings narrowly contracted (see figure)................................................. alpestrisRohwer.
Postocellar area convex, not so sharply defined: stigma broader; contraction of the
lanceolate cell distinctly longer than the width of the cell (see figure),
halcyon Norton.
7. Mesopleure and pectus black ........................................... 8.
Mesopleure and pectus pale ........................................... 12.
8. Legs entirely fulvo-ferruginous; orbits continuously pale. ................... 9.
Legs more or less black or dusky, especially the posterior pair; orbits not continuously pale ..................... ................................. 11.
9. Ocellar basin of the normal type, open below, poorly defined; saw with very long truncate teeth which are narrower at their bases; (clypeus deeply emarginate, lobes narrow) ......................................... orbitalis Rohwer.
Ocellar basin small, punctiform present only just in front of the anterior ocellus;
saw with narrow teeth................................................ 10.
10. Clypeus broadly, angulately emarginate, lobes sharply triangular; head distinctly
punctured; stigma gently rounded below ................ koebelel Rohwer.
(Clypeus arcuately emarginate, lobes broad, obtusely rounded; head shining, very
sparsely punctured; stigma strongly tapering ............alpestris Rohwer.
11. Supraclypeal area shiny, flattened, or but slightly convex; stigma rounded on
the lower margin; clypeus very shallowly emarginate ...... bioculata Rohwer.
Supraclypeal area roughened, strongly convex; stigma strongly tapering; clypeus
rather deeply, angulately emarginate.................... californica Rohwer.
12. Third antennal joint distinctly longer than the fourth ...................... 13.
Third and fourth antennal joints subequal................................ 14.
13. A small circular fovea in front of the anterior ocellus; mesoscutum with black spots
laterally ............................................ marlatti Rohwer.
No small fovea in front of the anterior ocellus; mesoscutum immaculate,
nervadensis Rohwer.
14. Ocellar basin practically wanting....................................... 15.
Ocellar basin large, distinct.............................................. 16.
15. Middle fovea wanting; sheath narrowly rounded apically.. pallipes MacGillivray.
Middle fovea represented by a large shallow depression; sheath narrowly truncate
apically ................................................ xantha Rohwer.
16. Sheath narrowly rounded apically; stigma broadest at base, tapering to apex, halcyon Norton.
Sheath obtusely rounded or subtruncate epically: stigma narrower, gently
round((ed below .... ................................................ 17.
17. Scape black; sheath subtruncate apically; front ot head closely punctured, occidentalis Rohwer.
Scape pale; sheath obltusely rounded apically; front of head with separate, small,
distinct punctures ......................................montanicola Rohwer.

0







Tech, Series 20, Part IV, Bureau of Ertor'ro S, E)(,,P' PLATE XXIII.



0 0 0






2






3

4











6
5











7













10






THE SAWFLY GENus HOPLOCAMPA. Fig. L-Jfopl,, o li,?,(z (Ma cgill i rra!J('11a) oregollellsi,,;: Front view of head. Fig. 2.-Htip'/l/p(l (jlopb)'.(;1opa flara: Front viewof head. Fig. 3.-Iloploc(iitipa(Hoploc(tilipti)
ophtl(dl ,: Saw. P'ig. 4.-Roplocompa (Hoplocautpa) Saw. Fig. 5.-Hopl()1campi. (Jlopl(,i(-umpu) alpestris: Saw. Fig. 6.-Hoplocaltipa (Ifoplocampa) koebelei: Saw.
Fi :. 7.-Iloplocompa, (Hoplo( omprt) pallipes: Saw. Fig. 8.-Hoplocampa (Hoplocampa)
a&' (101i.' Saw. Fig. 9-Holfilocompa (11oplocampa) xantlia: Saw. Fig. IO.-Jl()plo( Mpu (Hop, ot (: mpa) l-,aw. (Original.)







Tech. Series 20, Part IV, Bi, j Er,' ,i U S, Dttpt A PLATE XXIV.

















4
3










6 6




























9

10






THE SAWFLY GENus HOPLOCAMPA.
Fig. I. -Hoplocawq)a (Ifoploomii pa) xa? i t1i a: S heat I i. Fig. 2.-JP)pIocowp(i, (Iloplocmopa)
pdlipes:Sheath. Fi,-. 3.-Hoploceitipa Sheath. Fi--.4.-Ih)l)locampa (Hoplocampa) vrmdeitsis: Sheath. Fi 'g. 5.-Il'oploomitpa (11oploo-Imp") alpesfri, : Sheath. Fig. 6.-IfoplocamIm (Ifoploca topo) molifiloiopl(ii: Sheath. Fig. 7.I'loplocompa (Hoploowoyo mm-I(iffi: Sheath. Fig S
". .-Hoplooati, )o (Ijoploconqm) Sheath. Fig.'9.-Ifoploctmipo (Ifoploot-voil)(i) lialcyoji: Fig. 10.Hoplocompa (Ifoplocwtipa) orbifriili. : Sheath. (Original.)







Tech. Series 20, Part IV, Bureau of Entorrology, U, S. Dept. of Agriculture, PLA I XXV.





















woof
























4

















THE SAWFLY GENus HOPLOCAMPA.
Fig. 1 -11oplocanipa, (Roplocautpa) alpc4i-i, : Male, anterior wing. Fig. 2.-Roploca mpa
(Hoplocaaqw) halc!lon: Male, anal cell of fore wing. Fig. 3.-Iloplocmlipa (Hoplora;npa) utontanicola: Female, four basal antenna] joints. Fig. 4.-Hoplocmipa (Rt)j)loranq)a) vcvadcnsb : Female, four basal antenna joints. Fig. 1).-Rop1o(,am1)fz (Ifoploc(nnpa) oc(,idcWo1is: Male antennti. Fig. 6.-Hoplocavipa (11oplocalupa) tteontavicola: Nlnleantenna. (Original.)







Y, U 5, Do[W of A; riculturo,
Tech. Series 20, Part IV, Bureau of EWomolo l, PLATE XXV1.
















































...........

























4.

THE SAWFLY GENus HOPLOCAMPA.
Fig. I.-Ifoplocamim, (11oplocantpa) flaxa: Female, radial area in fore witig. Fig. 2
lIoplocanip" (Moplovampa) halc.ywi: Fernale, radial area in fore Nving. Fig. 3.-Iloplocavipa (11oplocantpa) wow.tavicola: Fernale, radial area in fore Nving. Fig. 4.-Iloplommpa (Maeg,11livrayella) lact(4pro ais: Female, radial area, in fore Nving. (Original.)







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