100 NEW YORK STATE MUSEUM 



thickly haired apically, postscutellum yellowish. Abdomen pale 

 yellowish orange, the distal segments fuscous yellowish, all sparsely 

 margined posteriorly with fuscous hairs; ovipositor pale yellowish. 

 Claws stout, strongly curved, the pulvilli longer than the claws. 

 Ovipositor short, stout, terminal lobes broadly triangular, narrowly 

 rounded. Cecid. 1104, aigo6. 



Caryomyia antennata Felt 

 1909 Felt, E. P. Econ. Ent. Jour., 2:292 



The midge produces one of the common hickory leaf galls about 

 Albany, N. Y. 



Gall. Yellowish green or brown, subglobular (pi. 10, fig. i), 

 thick-walled, the shape frequently modified by the pressure of con- 

 tiguous galls, 4 to 5 mm in diameter, the surface sparsely clothed 

 with a minute pubescence ; walls very thick, with a diameter of i mm 

 or more. 



Larva. Length 2.25 mm, white, rather stout, tne head small, 

 antennae short, stout. Breastbone rather stout, unidentate, the 

 tooth long, rather stout, the shaft somewhat enlarged at each extrem- 

 ity. Posteriorly the body tapers to the broadly rounded extremity. 



Exuviae. Length 3 mm, whitish, stout. Antennal cases short, 

 stout, with a rounded, chitinous thickening at the base. Thoracic 

 horns rather long, slender, slightly curved. Wing cases extending 

 to the fourth abdominal segment, the leg cases to the fifth, dorsum 

 of the latter thickly margined posteriorly with six or seven trans- 

 verse rows of stout, chitinous spines, posterior extremity nearly 

 unarmed, broadly rounded. 



Male. Length 3 mm. Antennae extending to the fourth abdom- 

 inal segment, sparsely haired, fuscous yellowish; fourteen binodose 

 segments, the fifth with stems two and one-half times their diameters 

 respectively, the distal enlargement narrowly oval; terminal segment 

 reduced, narrowly oval. Palpi probably qiiadriarticulate, the distal 

 segment produced, with a length four times its diameter. Mesono- 

 tum fuscous yellowish, the submedian lines sparsely haired. Scu- 

 tellum reddish, postscutelliun, fuscous yellowish. Abdomen deep 

 reddish orange, the segments sparsely margined posteriorly with 

 fuscous setae; genitalia fuscous yellowish. Wings hyaline, costa 

 pale straw. Halteres pale yellowish. Coxae and legs mostly fuscous 

 yellowish; claws slender, evenly curved, the pulvilli nearly as long as 

 the claws. Genitalia; basal clasp segment stout, terminal clasp 

 segment stout, long, hardly tapering; dorsal plate long, broad, 

 rather deeply and roundly emarginate, the lobes broadly rounded; 

 ventral plate long, broad, broadly and roundly emarginate. 



Female. Length 4 mm. Antennae extending to the second 

 abdominal segment, sparsely haired, whitish transparent; fourteen 

 cylindric sessile segments, the fifth with a length three and one-half 

 times its diameter; subbasal whorl rather thick, irregular; subapical 

 whorl broad, irregular; circumfila at the basal third and apically, 

 anastomosing somewhat irregularly; terminal segment narrowly oval. 



