I78 NEW YORK STATE MUSEUM 



thick, subapical band very thick and long ; terminal segment slightly 

 produced, narrowly oval. Palpi; first segment subquadrate, the 

 second narrowly oval, with a length three times its diameter, the 

 third and fourth subequal, each one-half longer than the second. 

 Mesonotum dull black, the submedian lines sparsely haired. Scutel- 

 lum dull orange, postscutellum fuscous. Abdomen sparsely haired 

 the dorsal sclerites dark brown, the pleurae and venter fuscous 

 yellowish. Wings hyaline, costa darK brown. Halteres yellow- 

 ish basally, fuscous apically. Coxae and femora basally fuscous 

 yellowish, the remainder of the legs mostly dark brown ; tarsi nearly 

 black; claws slender, strongly curved, the pulvilli a little shorter 

 than the claws. Genitalia ; basal clasp segment stout, subtruncate : 

 terminal clasp segment swollen basally; dorsal plate very short, 

 broad, broadly and triangularly emarginate ; ventral plate long, 

 deeply and roundly emarginate ; harpes stout. 



Female. Length 2.5 mm. Antennae extending to the second 

 abdominal segment, sparsely haired, light brown; 16 segments, the 

 fifth with a length two and one-half times its diameter; subbasal 

 whorl sparse, the subapical band rather sparse ; terminal segment 

 somewhat produced, tapering distally. Ovipositor as long as the 

 body, the terminal lobes very long, slender, with a length about six 

 times the width. Other characters nearly as in the male. Type 

 Cecid. ai937a. 



Dasyneura radifolii Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2 1289 



This species was reared April 16 to 20, 1909 in some numbers 

 from irregular, oval galls formed of root leaves on S o 1 i d a g o 

 puberula orS. juncea taken by Miss Cora H. Clarke at 

 Magnolia, Mass. 



Gall. Greenish, irregular, oval, about 1 cm long, composed of 

 clusters of root leaves and inhabited by several larvae. 



Larva. Length 3mm, pale orange. Head small; antennae rela- 

 tively long, slender; breastbone rather conspicuous, bidentate, be- 

 coming obsolete posteriorly. Skin coarsely shagreened. Posterior 

 extremity broadly rounded, slightly bilobed and with inconspicuous 

 sublateral tubercles. 



Male. Length 1.5 mm. Antennae one-half longer than the body, 

 sparsely haired, dark brown; 17 segments, the fifth with a stem 

 one-quarter longer than the cylindric basal enlargement, which lat- 

 ter has a length two and one-half times its diameter ; subbasal 

 whorl thick, subapical band thick, long; terminal segment reduced, 

 narrowly oval. Palpi; first segment short, irregular, second nar- 

 rowly oval, with a length three times its diameter, the third one- 

 half longer, slender, the fourth one-quarter longer than the third, 

 slender. Mesonotum dark brown, the submedian lines sparsely 



