Il6 NEW YORK STATE MUSEUM 



Female. Length 2 mm. Antennae light brown, the basal segments 

 yellowish; 22 segments, the fifth with a length about one-half the 

 diameter; terminal segment greatly produced, acute. Palpi; the 

 first segment short, stout, subrect angular, the second a little longer, 

 stouter, the third a little longer and more slender than the second, 

 the fourth one-half longer and more slender than the third. Face 

 with patches of whitish scales above and below the antennae. 

 Alesonotum thickly and evenly clothed with silvery yellowish 

 scales. Scutellum pale yellowish. Abdomen thickly and evenly 

 clothed with grayish silvery scales, the seventh segment fuscous, 

 the ovipositor pale yellowish. Wings hyaline, costa dark brown, 

 the third vein uniting with the anterior margin at the distal third. 

 Pleurae and coxae silvery white; femora pale yellowish, fuscous 

 apically, tibiae and tarsi dark brown; claws rather slender, long, 

 strongly curved, the pul villi a little longer than the claws. Ovipositor 

 probably nearly as long as the abdomen, the distal portion slender. 

 Type Cecid. ai568x. 



Lasioptera riparia Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2:287 



This form was reared April 27, 1908 from an oval or fusiform, 

 petiole or tendril gall on Vitis bicolor taken at West field, 

 N. Y., October 16, 1907. The male may be distinguished from 

 similarly marked individuals by the four basal segments being 

 mostly yellowish and sparsely clothed with silvery scales, the fifth 

 and sixth segments being dark brown and the seventh fuscous 

 yellowish. The female has the basal segment white and the other 

 segments narrowly margined with whitish markings, the latter 

 produced laterally. The tarsi have the two basal segments mostly 

 yellowish, the distal segments fuscous. This species evidently 

 winters in the gall and presumably produces but one generation 

 annually. Polygnotus sp. was reared from this gall. 



Gall. This gall is monothalamous, narrowly oval, 1.5 cm long 

 by .8 cm in diameter. It may occur on either the leaf or the petiole, 

 almost invariably near the middle, and is a variable brown in color. 



Larva. Length 2 mm, rather slender, deep orange. Head small, 

 the antennae rather long, uniarticulate ; breastbone slender, minutely 

 tridentate, slightly expanded distally. Skin minutely shagreened; 

 posterior extremity broadly rounded, ornamented with a few stout 

 setae, anus slitlike. Probably the lan^a of this species. 



Male. Length 1.75 mm. Antennae dark brown, the basal 

 .segments yellowish, 20 segments; the fifth with. a length a little 

 greater than its diameter, the last segment somewhat produced, 

 narrowly rounded apically. Palpi [ first segment presumably short, 

 the second apparently narrowly oval, the third a little longer, more 

 slender, and the fourth longer and more slender than the third. 

 Mesonotum shining dark brown. Scutellum reddish brown, the 



