94 NEW YORK STATE MUSEUM 



Rhabdophaga rileyana Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2:289 



This species was reared by C. V. Riley June 15 and July 3, 1877 

 from a crumpled soft maple leaf having a portion badly folded, 

 the folds being very irregular, thickened and somewhat shriveled. 



Female. Length 1.25 mm. Antennae extending to the base of 

 the abdomen, sparsely haired, dark brown; 15 segments, the fifth 

 with a length twice its diameter, terminal segment slightly reduced, 

 tapering from the distal fourth and slightly fused with the pre- 

 ceding. Palpi ; first segment short, stout, subquadrate, the second 

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

 twice the length of the third, slender. Mesonotum shining dark 

 brown. Scutellum and postscutellum fuscous yellowish. Abdomen 

 yellowish brown; ovipositor yellowish. Wings hyaline, costa light 

 brown. Halteres yellowish transparent. Legs yellowish brown, the 

 tarsi somewhat darker; claws long, slightly curved, the pulvilli as 

 long as the claws. Ovipositor about one-half the length of the 

 abdomen. Type Cecid. 1041. 



Rhabdophaga racemi Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 352, 353 

 This reddish brown species was reared May 11, 1906 by Mr 



Norman Griddle of Aweme, Manitoba, from small, clustered galls 



arising from adjacent willow buds. 



Gall. This is a small, clustered, rosette deformity arising from 

 the closely set buds, the tip of the twig apparently becoming stunted 

 on account of the infestation. The individual galls are about 2 cm 

 long, I cm in diameter and composed of numerous closely set, 

 aborted leaves, the central ones somewhat longer than the others 

 and variously curled. 



Male. Length 1.5 mm. Antennae as long as the body, rather 

 thickly haired, yellowish brown; 16 segments, the fifth with a stem 

 three-fourths the length of the basal enlargement, which latter has 

 a length one-half greater than its diameter ; terminal segment 

 slightly reduced, narrowly oval. Palpi ; first segment short, stout, 

 the second broadly oval, the third stout, with a length four times 

 its width, the fourth a little longer, more slender. Mesonotum 

 dark brown, the yellowish submedian lines sparsely haired. Scutel- 

 lum fuscous yellowish, postscutellum darker. Abdomen reddish 

 brown. Wings hyaline, costa reddish brown. Halteres yellowish 

 transparent. Coxae and femora basally yellowish, the distal por- 

 tion of femora and tibiae reddish brown, the tarsi mostly dark 

 brown ; claws strongly curved, the pulvilli longer than the claws. 

 Genitalia; basal clasp segment stout; terminal clasp segment stout; 

 dorsal plate broad, deeply and triangularly incised, ventral plate 



