REPORT OF THE STATE ENTOMOLOGIST I917 189 



Male. Length 1.75 mm. Antennae one-third longer than the 

 body, thickly haired, light brown, the basal segments yellowish; 

 14 segments, the fifth almost trinodose with stems one and one-fourth 

 and iouv times their diameters, respectively; terminal segment, 

 distal enlargement subcylindric, slightly constricted near the basal 

 fourth, with a length about four times its diameter; apically a long, 

 slender, fingerlike process. Palpi quadriarticulate, the first segment 

 rather long, cylindric, with a length over twice its diameter, the 

 second one-half longer than the first, the third one-fourth longer 

 than the second, and the fourth a little longer than the third, each 

 successively more slender; face yellowish transparent; thorax and 

 abdomen pale yellowish orange, the latter slightly darker at the 

 extremity. Genitalia fuscous yellowish. Wings with a yellowish 

 tinge, costa light fuscous yellowish; halteres pale yellowish, light 

 fuscous subapically. Coxae and femora basally pale yellowish: the 

 distal portion of femora and most of tibiae yellowish straw, the tarsi 

 mostly dark brown, the distal segments nearly black; claws long, 

 stout, strongly curved, the pulvilli about one-third the length of 

 the claws. Genitalia; basal clasp segment long, a broadly rounded 

 process near the internal basal third; terminal clasp segment long, 

 stout; dorsal plate short, broad, deeply and narrowly incised, the 

 lobes broadly and roundly emarginate, the angles with stout setae, 

 the lateral ones produced; ventral plate long, expanded distally, 

 deeply and triangularly incised, the lobes short, stout, irregularly 

 rounded; style long, stout. Type Cecid. 1104a. 



Mycodiplosis corylifolia Felt 



1907 Felt, E. P. New Species of Cecidomyiidae II, p. 20 

 1908 N. Y. State Mus. Bui. 124, p. 301, 401 



Both sexes were reared July .23, igo; from a fuzzy, wrinkled leaf 



fold gall on hazel, Corylus americana, taken at West 



Nyack, N. Y., and produced by Lasiopteryx coryli. 



This species is probably zoophagous. 



Male. Length i mm. Antennae as long as the body, thickly 

 haired, Hght brown, yellowish basally; 14 segments, the fifth with 

 stems two and three and one-half times their diameters. Palpi; 

 the first segment short, stout, subquadrate, the second narrowly 

 oval, the third a little longer and more slender, the fourth more 

 slender than the third. Thorax and abdomen pale yellowish. Scutel- 

 lum and base of the abdomen a little darker. Genitalia whitish 

 transparent. Wings hyaline, costa light brown, the wings tinged 

 with yellowish. Coxae and base of femora yellowish transparent, 

 the distal portion of femora and tibiae pale yellowish, tarsi fuscous 

 straw, the distal segments darker; claws long, slender, strongly 

 curved basally, the pulvilli one-half the length of the claws. Geni- 

 talia; basal clasp segment long, slender; terminal clasp segment swol- 

 len basally, slender; dorsal plate short, broad, deeply and narrowly 

 emarginate, the lobes broadly and roundly emarginate, the lateral 



