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Psyche 8:67-69, 1897.
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May 18q7.J
DESCRIPTION OF SOME NEW GENERA IN THE FAMILY CYNIPIDAE.
BY WILLIAM H. ASHMEAV, WASHINGTON, D. C. Subfamily iii ANACHARINAE.
ACAXTHAEGILIPS gen. nov.
This genus is based upon a single speci- men in the Herbert Smith collection, taken by him at Chapada, Brazil. It is closely allied to Xyalaspis Hartig, and Aegilips Hitliday, but is readily distinguished from both by thevery large erect spined scutellum, the rugose inesonotum which is without par- apsidal furrows, the loug open radial cell, and by the larger abdominal petiole.
Acanihaegil'ps lirazfliensis sp. 11. 2.- Length 2.4 mm. Black, shining-; antennae and legs brownish-yellow, anterior and mid- dle femora, except at base and apex, brown, hind come and femora, except at apex, and hind tibiae, except at base, black; wings hyaline, the veins brown.
The head is perfectly smooth, highly pol- ished ; mandibles brownish-yellow, 3-ckntatc, the teeth black; antennae longer than the body, slightly thickened at apex, 13-jointed, the scape long, obclavate, as long as the sec- ond flagellar joint, the first flagellar joint be- ing as long as the pedicel and scape united, the following joints to penultimate gradually shortening, the last joint as long as the two preceding united. Mesonotum coarsely
irregularly rugose, without Un-rows. Sculel- lum produced into a long erect acute spine the length of the mesonoturn.
Metanotum
rugose with the pleura pubescent.
Marginal
vein long, open along the fore margin, the second abscissa of radius twice the length of first. Abdomen subglohose, polished, the petiole smooth.
Hab. - Cliapada, Brazil.
Subfamily viii CYNIPINAE.
PHYLI.OTERAS gen. nov.
This genus is based upon BiorrItiza ritbhtts Gilletle. which isauite distinct from Biorrhiza Westwood, in having 13-jointed, not 14-
jointed antennae, and by having only faint traces of parapsidal furrows.
It comes, however, quite close to the aga- mow female of Trigonaspis Hartig, but the scutell~im is rounded, with indications of foveae on either side at base. and without a rim a1 apex. In Trigonaspis, the sc~~tellum is semicircular, without foveae at base and bounded by a delicate rhn posteriorly.
In Phylloteras the frons ifs shagreened 01- coriaceous, the inesonotum subopnque or alu- taceous, the antennae rather short, the third joint a little longer than the fourth, joints 9 to iz twice as long as thick, while the claws of hind tarsi have a tooth at base within. In ,. Ingonaspis . lhc frons is smooth, shining, or at the most feebly aintaceo~~s, the rnesonot~~m polished, the antennae with the third joint almost twice fis long as the fourth, joints 7 to 12 being scwcely longer than thick, while the claws of hind tarsi are simple, without a tooth.
This genus is based upon Btort'hissa 7 1 7 d h Ashm., which differs from the true Biorrhizn in having' no ciu-ina on Lhe frons between the antennae, in having only 13-jointed antennae. by the sentellurn being rounded, and finally &y the hind tarsi being much shorter than the tibiae, the claws having a more or less distinct tooth beneath at base.
In Biorrhiza the scutellum is lunate or
semicircular, the frons carinate, the hind tarsi as long as their tibiae, while the claws are simple.
TRICHOTRRAS gen. nov.
In tins genus the antennae are only 12-
jointed, the third joint being a little shorter and thicker than the fourth. but of an ennal
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length with the fifth; joints 6-8 become grad- ually shorter and shorter, joints 8 to 11 being only a little longer than thick, the 12th or last joint oblong, as long as 10 and 11 united. The head and thorax are closely punctate, opaque, and very hairy, the disk of the meso- pleura alone polished and bare; the scutelluin is cushion-shaped, a little longer than wide, with two smooth, innate foveae at base;
hind tarsi not longer than their tibiae, the claws with EI tooth at base beneath.
Trichoferas cognilleffi sp. n. Galls. -
Sn~all, brown, subopaque, globul~ir galls, averaging from 6 to 8 inin, in diamctcr, and internally with a central kernel or larval cell held in place by radiating filaments.
These galls were collected by Mr. D. W.
Coquillett, at Los Angeles, Ciil., from the upper surface of the leaves of an unknown oak, who forwarded them to the Department of Agriculture, where three specimens of the gall wasp were reared. Structui-ally and in general appearance the galls very closely resemble DryofItavta 'polifa Bass., but the suhapterous wasp is quite different from that species.
Gall-wasp. Agarnous, 2. Length 2.5 mm.
Head and thorax ferruginous, closely punc- tnte, and very hairy; prosternum and pleura blackish ; legs fusco-piceous, the articulations paler.
Antennae 12-jointed, shorter than the
body, the scape fully as long as the first joint of flsigelluin, obconical, and much stouter, pedicel 13 times as long as thick; second joint of flagellum distinctly longer than either the first or third joint; fourth joint of flagellum a little shorter than the third, the fifth and following joints gradu- ally shortening, the pe~~ultimnte joint being scarcely longer than thick, the last joint fully as long as the first joint of flagellum, or twice as longas the penultimate. Wings
abbreviated, narrowed and not extending
beyond tip of abdomen, the veins dark brown, the marginal cell open, the areolet indicated by the union of the &urrounding nervures. Abdomen black, polished, pubescent along the sides towards base, and as long as the head and thorax together, compressed, and viewed from the side it is as broad as long, the hypopygium armed at tip with a long
spine,
Hab. - Los Angeles, California.
Type, No. 3498, U. S. N. M.
Described from 3?
specimens, bred Nov.
26 and 29, and Dec. 6, 1892.
AULACIDEA gen. nov
The type of this genus ib AuZax mu/~~ich'icoZa Ashm., and to it belong all the N. A. species recently described under the genus Aulax. From Aulax Harlig (seas. sir.) it is readily separated by the closed marginal cell. It is intermediate between Aulax IIartig, and
I'haenacis F6rster; from the former, it is at once beparaled by the character alrcady re- ferred to - the closed marginal cell, while from the latter which also has a closed
iniu-g-inal cell. it differs in having the first abscissa of radius curved, the apical branch of the submarginal vein straight, the parapsidal furrows sharply (.lefincd, coinplele, the female with 13-14-jointed antennae, the third joint being shorter than the fourth or at least no longer. In Phsicnacis the first abscissa of radius is almost straight, the apical branch of the submarginal vein curved, the parapfcidal furrows; incomplete or vaguely, indistinctly defined, while the female antennae has the third joint longer than the fourth.
GUNASPIS gen. nov.
Tins genus is based upon Diastrophus
sct~/eZtt~;,i.~ Gillette, and to it also belongs D. 'pofentillae Bassett. It is at once separated from Diiisti-ophus Hiu-tig, by the shape of the scutell~nn which is
much produced, in out-
line pyramidal, its lip projecting far over the inetathurax, by the lower half of the mew- pleura being co:trsely sculptured, and by the antennae being 13-jointed In 2, 14-jointed in 8, In Diastrophus the $ has 14-jointed
antennae, the 8 15-jointed antennae.
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-May 18~17 1 PSYCHE. 69
GILLETTEA gen. nov.
'rliis interesting new genus of gall-n~aking Cynipidac,
which is dedicated to Prof. C.
P. Gillette, one of our most industrious stu- dents of these insects, is based upon an undescnbed species discovered by Prof. T. M. Holzinger, of Winona, Minnesota, living in pithy swellings on the leaf petiole of Tarcixcicitw dens-leonis.
It comesvery clobe Lo the European genus Xestophanes Fnrster, agreeing with it in having a smooth mesonotnm, an open radial cell, with a distinct areolet, and well defined parapsidal furrows; but the antennae in
both sexes are ~qjointed, the third joint being distinctly longer than the fourth, the scutellum is smooth or nearly smooth, while the metanotum has two parallel, widely sep- arated median carinae. In Xestophancs the antennae are 13-jointed in the 9, 15-
jointed in the J', thc &c~ttell~tm rugulose, while the metathoracic carinae are not par- allel and converge anteriorly.
Giiletfea tarcixctdsp. n. Galls. -Irregular, knotty-like, pithy swellings, occurring
together and uniting and forming oblong, irrcg~~lar galls along and surrounding the leaf-petiole of Taraxacum dens-let.o~<is; aver- age length
from one-quarter of an inch to
fully two inches.
Gall-wasp. 9. Length 1.p-1m. Polished
black, shining; head above, disk of meso- notum and scutellu~n feebly, microscopically stmgreened; face and sides of thorax more distinctly shagreened, subopaque; aniennac brown-black, with tip of pedicel and first joint of flagellum honey-yellow; mandibles pale rufous with black teeth, bidentate; all coxae black, the femorabrown-black, towards apex as well as all tibiae and tarsi, honey- yellow, the tibiae medially as well as two or three terminal joints of tarsi, obfuscated; wings hyaline, the veins blackish.
Antennae 14-jointed, nearly as long as the body, filiform, the first joint of llagelliim one- half longer than the second, the second
about 34 times as long as thick, the following joints imperceptibly shortening-, so that the penultimate is only half the length of the second, the last joint being about one-half longer than the preceding. Parapsidat
fiin-ows distinct, complete the middle lobe with a very vaguely defined median longitu- dinal line, and on either hide anteriorly two short vaguely impressed lines, which are only visible in certain lights. Scutellum with two narrow oblique foveae at base. Wings with a short but distinct marginal cilia, the uervures distinct, black, the
marginal cell about 24
times as long as broad at base; areolet small but distinct, triangular. Abdomen not longer than the thorax, polished black, the second segment (the first sifter thevery short petiole) about one-half longer than the third, the fourth and followingvery short, the hypopy- gium prominent, as seen from the side,
triangularly acute.
(T. Lengt.li 1.1 mm.
Agrees well with the
female, except in the usual sexual differences, the antennae being slightly longer, the third joint honey-yellow only nt base; all femora, except the anterior at tips, being black, while the marginal and costal cells are more or less confluent.
Hab. - Winona, Minn.
Types, No. 3499, U. S. National Museum,
Described from I 8 and 2 9 specimens,
bred March ,?I, 1896 by Prof. T. M.
Holzinger.
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