220 NEW YORK STATE MUSEUM 
Members of this genus are easily recognized by their general re- 
semblance to Lasioptera in connection with the densely scaled, 
usually fuscous wing membrane. The two are readily separated 
by the fact that the antennal segments in Brachyneura are much 
longer than in Lasioptera and, moreover, never possess the char- 
acteristic circumfili almost invariably found in the Itonididinae. 
The antennae are composed of 12 segments. There are 3 simple 
long veins. The tarsi are quinqearticulate. Type B. fusco- 
risea Rond. 
Two American species of this genus have been reared, one B. 
eupatorii was bred presumably from an oval swelling on 
thoroughwort, Kupatorium, perfoliatum, the other 
species, B. vitis, was reared from a jar containing the familiar 
Lasivoptera vitis gall on grape, Vitis sp., and presumably 
came from this plant. 
Key to species 
a Fifth antennal segment with a length twice its diameter; scutellum 
yellowish 
b Antennae with It segments, femora and tibiae dark brown. Bred ? 
mon ILA GIO MEOta Wwawws SAlllesosooax Vitis Belt) (Gy amosd 
bb Antennae with 12 segments; femora and tibiae silvery grey. Bred 
soma Wakaymoyoisiohyyonme, IB (pp) te Crp tblrn Ow wo lei wlio osscacc 
eupatorii Felt, C. a1349 
aa Fifth antennal segment with a length three times its diameter, scute:lum 
black, legs uniform fuscous or black..americana Felt, C. 734 
Brachyneura vitis Felt 
1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 317 
1909 —————— Ent. Soc. Ont. 39th Rep’t, p. 44 
This species was reared July 13, 1907 from a jar containing the 
familia, Easvoptera vitis galls on sgerape, | \ 1racesoe 
and presumably came from this plant. 
Male. Length .5 mm. Antennae nearly as long as the body, 
sparsely haired, dark brown; 11 segments, fifth subcylindric, with 
a stem one-fourth the basal enlargement, which latter has a length 
about twice its diameter, and is thickly clothed with short, narrow, 
appressed scales ; terminal segment produced, tapering to a narrowly 
rounded apex. Palpi; the first segment short, stout, subquadrate, 
the second and third apparently stout, each with a length about 
three times its diameter. Mesonotum black. Scutellum, postscutel- 
lum and basal abdominal segment apparently fuscous yellowish, the 
remainder of the abdomen dark brown, sparsely haired. Wings 
hyaline, costa dark brown; membrane thickly clothed with fine 
hairs. Halteres yellowish transparent. Legs a variable dark 
brown; claws unidentate, pulvilli shorter than the claws. Genitalia; 
