112 NEW YORK STATE MUSEUM 



shiny black, margined anteriorly and laterally with silvery white ; 

 the submedian lines ornamented with pale hairs. Scutellum dark 

 brown, silvery white apically ; postscutellum a nearly uniform dark 

 brown. Abdomen a rich dark brown with the dorsum of the ist 

 abdominal segment, a minute median spot on the 2d, a broad ap- 

 ical band on the 3d and 4th segments, the two latter not extending 

 to the margin, silvery white ; terminal segment pale orange. Coxae 

 and extremities of femora and tibiae yellowish transparent; tarsi 

 a nearly uniform dark brown, lighter ventrally. 



Taken on witch-hazel at Albany, N.Y. June 10, 1906. 



Type Cecid. 181, N.Y. State Museum. 



Rhabdophaga acerifolia n. sp. 



Male. Length 1.5 mm. Antennae about f the length of the 

 body, thickly clothed with whitish hairs, dark brown, 15 segments. 

 Mesonotum dark browu; scutellum reddish brown; postscutellum 

 dark brown and orange, the basal abdominal segment dark brown, 

 the others light brown, all sparsely clothed with whitish hairs. Gen- 

 italia dark brown; legs variably brownish, the tarsi darker. 



Taken in the vicinity of maple and other trees and shrubs at 

 Albany, N.Y. May 17, 1906. 



Type Cecid. 36, N.Y. State Museum. 



Rhabdophaga populi n. sp. 



Male. Length 2 mm. Antennae extending nearly to the tip of 

 the abdomen, thickly haired, dark yellowish, 18 segments. Face 

 dark brown, eyes narrowly margined posteriorly with silvery white. 

 Mesonotum dark brown with distinct submedian lines of silvery 

 white hairs and groups of the same at the base of the wings. Scutel- 

 lum dark brown; postscutellum reddish brown; abdomen dark 

 brown, thinly clothed dorsally with scattering silvery hairs and 

 rather thickly clothed laterally. Legs a nearly uniform brown 

 dorsally, silvery white ventrally; tarsi possibly a little darker. 



Female. Length 2.5 mm. Antennae extending to the base of 

 the abdomen; color characters practically as in the other sex. 



Bred May 23, 1906, from cocoons taken at the base of poplar 

 buds at Albany, N.Y. 



Type Cecid. 78X, N.Y. State Museum. 



