122 NEW YORK STATE MUSEUM 



with brownish hairs. Scutellum reddish brown; postscutellum 

 dark brown. Abdomen rather Hght brown with a yellowish cast 

 laterally. Legs pale brown, lighter ventrally; tarsi a little darker. 



Taken on basswood at Westfield, N.Y. May 23, 1906. 



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



Oligotrophus brevicornis n. sp. 



Male. Length i mm. Antennae extending to the base of the 

 abdomen, rather thickly haired, dark brown, yellowish basally, 12 

 segments. Face pale yellowish ; mesonotum dark brown, submedian 

 lines yellowish, sparsely ornamented with fine setae. Scutellum 

 reddish orange ; postscutellum dark brown. Abdomen a nearly 

 uniform fuscous yellowish. Genitalia somewhat fuscous; legs a 

 nearly uniform pale straw, the distal segments dark brown. 



Taken on Solidago at Nassau, N.Y. June 14, 1906. 



Type Cecid. 281, N.Y. State Museum. 



Oligotrophus azaleae n. sp. 



Male. Length 1.5 mm. Antennae not extending to the base of 

 the abdomen, sparsely haired, Hght brown, 12 segments. Mesono- 

 tum dark brown with submedian lines of dark hairs. Scutellum 

 reddish brown; postscutellum lighter; abdomen yellowish. Geni- 

 talia dark brown; femora and tibiae yellowish brown; tarsi brown 

 tinged with reddish, the 2d tarsal segment more than twice the 

 diameter of the following one, and as long as the 3d and 4th com- 

 bined. 



Taken on azalea at Albany, N.Y. May 18, 1906. 



Type Cecid. 48, N.Y. State Museum. 



Oligotrophus aceris n. sp. 



Male. Length .75 mm. Antennae extending to the 3d abdomi- 

 nal segment, sparsely haired, dark brown, 13 segments. Face and 

 mesonotum dark brown, the latter with distinct submedian lines 

 of yellowish hairs. Scutellum reddish brown; postscutellum yel- 

 lowish. Abdomen dark brown, sparsely clothed with yellowish 

 hairs; legs reddish brown and yellowish, lighter ventrally, the 

 .deeper color at the extremities of the femora, distally on the tibiae 

 and on the distal tarsal segments. 



Taken on soft maple at Albany, N.Y. May 21, 1906. 



Type Cecid. 66, N.Y. State Museum. 



