156 NEW YORK STATE MUSEUM 



Male. Length 1.5 mm. Antennae probably extending to the 

 third abdominal segment, sparsely haired, pale yellowish; 14 seg- 

 ments, the fifth with a length twice its diameter; 12 to 14 anastomo- 

 sing circumfili; terminal segment produced, narrowly rounded. Palpi; 

 the first segment short, subquadrate, the second about thrice the 

 length of the first, the third one-half longer than the second, more 

 slender, the fourth nearly twice the length of the third, dilated. 

 Mesonotum reddish brown, the submedian lines thickly haired. 

 Scutellum pale yellowish, postscutellum darker. Abdomen dark 

 reddish brown, the segments rather thickly margined posteriorly with 

 silvery hairs. Wings hyaline, costa light brown. Halteres pale 

 yellowish. Legs light reddish brown; claws long, slender, strongly 

 curved, the pulvilli shorter than the claws. Genitalia; dorsal plate 

 short, deeply and narrowly emarginate, the lobes irregularly rounded. 



Female. Length 1.5 mm. Antennae probably extending to the 

 third abdominal segment, sparsely haired, light brown; 14 segments, 

 the fifth with a length twice its diameter and 6 circumfili; terminal 

 segment produced, narrowly rounded. Palpi; the first segment 

 short, stout, subquadrate, the second more than twice the length 

 of the first, more slender, the third one-half longer tha,n the second, 

 more slender, the fourth one-half longer than the third. Ovipositor 

 about one-fourth the length of the abdomen, otherwise nearly as in 

 the male. Type Cecid. 1043. 



Cincticomia pustulata Felt 

 1909 Felt, E. P. Econ. Ent. Jour., 2:291 



This species was reared in some numbers the latter part of April 

 and early in May 1909 from oval, pustulate swellings on the leaves 

 of the yellow barked or black oak, Quercus velutina, 

 taken by Miss Cora H. Clarke at Magnolia, Mass., in October 1908. 

 Apparently the same species was reared March 30, 1896 by Theodore 

 Pergande from a similar leaf gall on red oak, Quercus rubra, 

 taken at Washington, D. C. 



Gall. This is a variable brown, irregularly oval, pustulate swelling 

 5 to 6 mm in diameter. It occurs here and there on the leaf surface. 



Larva. Length 2 mm, semitransparent. Head small; antennae 

 short, stout. Breastbone broadly bidentate, rather strongly chitin- 

 ized anteriorly, weakly so posteriorly. Skin nearly smooth, strongly 

 folded, posterior extremity broadly rounded and with a pair of short, 

 broad tubercles. 



Male. Length 2 mm. Antennae nearly as long as the body, 

 sparsely haired, fuscous yellowish; 14 segments, the fifth with a 

 length about three times its diameter; 8 or 9 circumfili; terminal 

 segment slightly produced, with a length four times its diameter, 

 apically a short, obtuse knob. Palpi; first segment short, rectangular, 

 the second slender, with a length four times its diameter, the third as 



