‘t12 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 1st 
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 ro, 1906. 
Type Cecid. 181, N.Y. State Museum. 
Rhabdophaga acerifolia n. sp. 
Male. Length 1.5; mm. Antennae about % the length of the 
body, thickly clothed with whitish hairs, dark brown, 15 segments. 
Mesonotum dark brown; 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 2mm. Antennae extending nearly to the tip of 
the abdomen, thickly haired, dark yellowish, r8 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. 
