288 NEW YORK STATE MUSEUM 



laterally and anteriorly with silvery white scales, the sub- 

 median' lines sparsely haired. Scutellum and postscutellum 

 dark brown. Abdomen dark brown, the dorsum of the first 

 abdominal segment thickly clothed with silvery w-hite scales, 

 the second, third and fourth abdominal segments narrowly 

 margined posteriorly with silvery white markings, the latter 

 obsolete laterally. Halteres yellowish basally, whitish apically. 

 Coxae and extremities of femora and tibiae broadly and vari- 

 ably yellowish, the middle dark brown, tarsi dark brown, the 

 distal segments yellowish, the latter possibly denuded. 



Taken July i8, 1907, ovipositing in the stem of Clematis 

 virginiana. 



Type C. ai596a, N. Y. State Museum. 



Choristoneura Helena n. sp. 



Female. Length 2 mm. Antennae hardly extending to the 

 base of the abdomen, sparsely haired, brown; 18 segments, the 

 two basal segments fuscous yellowish; face with a white patch 

 of silvery scales, the head posteriorly narrowly margined with 

 silvery white hairs. Mesonotum black, sparsely margined 

 laterally with silvery white. Scutellum nearly concolorous. 

 Abdomen black, the incisures dark reddish, each segment 

 sparsely margined posteriorly with silvery white, the venter a 

 uniform silvery gray. Halteres pale yellowish. Legs black with 

 the coxae, the extreme base of the femora and the articulations 

 of the tibiae more or less pale. 



Bred July 1907, from round blister galls on Aster 

 lateriflorus taken at Highland, N. Y. 



Type C. ai55o, N. Y. State Museum. 



Choristoneura helianthi n. sp. 

 Female. Length 2.75 mm. Antennae extending to the base 

 of the abdomen, sparsely haired, dark brown, the proximal seg- 

 ments, venter and face silvery white, 18 segments. Mesonotum 

 dark brown, mostly denuded, the submedian lines dark. Scu- 

 tellum ornamented with numerous silvery hairs, postscutellum 

 with lateral silvery hairs. Abdomen black, the segments nar- 

 rowly margined posteriorly with silvery white, the latter inter- 

 rupted at the middle, venter silvery white. Halteres fuscous, 

 pale basally, fuscous apically. Coxae black with silvery hairs, 

 anterior and mid femora gray to the apical third, the posterior 



