REPORT OF THE STATE ENTOMOLOGIST igi2 I43 



Key to species 



a Antennal segments 8 



b Fourth palpal segment more than twice the length of the third; 



harpes broadly rounded apically j o h n s o n i Felt, C. 802 



bb Fourth palpal segment nearly twice the length of the third; 



harpes subacute apically cockerelli Felt, C. 932 



aa Antennal segments 9 



b Wings small, narrows subcosta uniting with the margin before 



the basal half ; palpi quadriarticulate c o r n i Felt, C. 459 



bb Wings rather large, broad, subcosta uniting with the margin at 

 or be3'ond the basal half 

 c Scutellum dark brown, the legs a variable fuscous ; palpi tri- 



articulate, stout diervillae Felt, C. 490 



cc Scutellum dark reddish brown, the legs a variable yellowish brown ; 



palpi quadriarticulate, slender spinosa n. sp., C. 1295 



aaa Antennal segments 10 



b Length 1.5 mm, body dark brown; female ... .p e r p 1 e x a Felt 

 bb Length 1.25 mm, body dark brown; male. . . .b o r e a 1 i s n. sp., 



aaaa Antennal segments 11 



b Scutellum yellowish brown; abdomen fuscous brown 



t e X a n a n. sp., C. 1294 



Microcerata johnsoni Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 310 



This form was taken August 2, 1891 by Prof. C. W. Johnson 

 at Philadelphia, Pa. 



Male. Length 1.75 mm. Antennae sparsely haired, pale yel- 

 lowish ; 8 segments, the fourth and following segments each some- 

 what more produced than the preceding, the sixth to the eighth 

 with few or no subapical appendages. Palpi ; the first segment, 

 short, stout, subrectangular ; the second a little longer, stouter, the 

 third one-half longer than the second, more slender and the fourth 

 more than twice the length of the third. Mesonotum dark brown, 

 almost black. Scutellum, postscutellum and abdomen dark brown. 

 Wings hyaline, costa reddish brown. Halteres yellowish basally, 

 slightly fuscous apically. Legs a nearly uniform fuscous yellowish, 

 tarsi slightly darker. Metatarsus more than tw^o and one-half 

 times as long as the following segment, the distal tarsal segment 

 with a sparse subapical row of long, stout setae ; claws rather long, 

 stout, slightly curved, with a rather conspicuous tooth dorsally at 

 the basal third and the concavity with several long, slender denticu- 

 lations ; pulvilli longer than the claw^s, thickly setose. Genitalia ; 

 basal clasp segment long, slender, terminal clasp segment swollen 

 at the base, with several short, stout apical and subapical spines ; 

 dorsal plate broad, short, broadly and slightly emarginate ; ventral 

 plate apparently wanting. Harpes well separated, tapering, broadly 

 rounded ; style long, stout, tapering, broadly rounded. Type Cecid. 

 802. 



