REPORT OF THE STATE ENTOMOLOGIST 1906 123 
Oligotrophus rhoinus n. sp. 
Male. Length.75mm. Antennaea little longer than the body, 
sparsely haired, light brown, 13 or 14 segments. Mesonotum dark 
brown; scutellum light brown with sparse apical setae; postscutellum 
yellowish brown. Abdomen a somewhat variable yellowish brown, 
the anterior four segments irregularly marked near the median line 
with dark brown. Legs pale yellowish brown; tarsi darker. 
Taken on sumac at Albany, N.Y. June 1, 1906. 
Type Cecid. 94, N.Y. State Museum. 
Oligotrophus thalactri n. sp. 
Male. Length 1.5 mm. Antennae shorter than the body, 
sparsely haired, light brown, yellowish basally, 14 segments. Face 
yellowish; mesonotum light yellowish brown, submedian lines 
yellowish. Scutellum and postscutellum pale yellowish. Abdomen 
yellowish, sparsely clothed with light hairs. Coxae and basal 
portion of femora pale yellow, the remainder of the legs fuscous 
yellow. 
Taken on early meadow rue at Albany, N.Y. June 1, 1906. 
Type Cecid. 98, N.Y. State Museum. 
Oligotrophus nodosus n. sp. 
Male. Length 1.25 mm. Antennae extending to the middle of 
the abdomen, sparsely haired, dark brown, 14 segments. Face and 
mesonotum dark brown, abdomen reddish brown, dorsal incisures 
orange-brown. Legs yellow with reddish tints; tibiae and tarsi 
fuscous apically. 
Taken on hornbeam or water beech near pine at Albany, N.Y. 
April 10, 1906. 
Type Cecid. ro, N.Y. State Museum. 
Oligotrophus tsugae n. sp. 
Male. Length 1.5 mm. Antennae extending to the middle of 
the abdomen, rather thickly haired, dark reddish brown, 15 seg- 
ments. Face dark reddish brown; mesonotum dark brown; 
scutellum, postscutellum and abdomen dark reddish. Legs a 
nearly uniform pale straw, lighter ventrally; tarsi darker. 
Taken on hemlock at Lake Clear, N.Y. June 7, 1906. 
Type Cecid. 165, N.Y. State Museum. 
