136 NEW YORK STATE MUSEUM 



emarginate, the lobes narrowly rounded; ventral plate short, broadly 

 rounded; harpes rather long, slender, tapering, style long. 



Female. Size and general characters about as in the opposite 

 sex. Antennae composed of 20-23 sessile segments, the fifth with 

 a length a little less than the diameter; terminal segment short, 

 broadly oval. Palpi; the first segment short, subquadrate, the 

 second stout, more than twice the length of the preceding, roundly 

 rectangular, the third slightly longer and more slender than the 

 second, the fourth more slender and about twice as long as the third, 

 the terminal segment, at least, with a few broad scales; ovipositor 

 nearly as long as the abdomen, the terminal lobes slender. Type 

 Cecid. ai343. 



Lasioptera spinulae Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 325 



Both sexes of this form were reared in the United States, Bureau 

 of Entomology June 16, 1883 from stem galls on an unknown plant 

 taken at Fort Huachua, Ariz., May 17, 1883, by H. K. Morrison. 



Male. Length 3 mm. Antennae dark brown; 19 segments, the 

 fifth with a length nearly equal to the diameter; terminal segment 

 slightly produced, broadly oval. Palpi; the first segment short, 

 stout, irregularly subquadrate, the second stout, broadly oval, 

 the third one-half longer than the second, swollen; eyes large, black. 

 Mesonotum reddish brown. Scutellum fuscous yellowish, post- 

 scutellum a little darker. Abdomen dark brown, the basal segment 

 thickly clothed with silvery white scales, the second to fifth segments 

 rather broadly and irregularly margined posteriorly with 3^ellowish 

 brown scales; genitalia dark brown. Wings hyaline, costa dark 

 brown, the third vein uniting with the anterior margin at the basal 

 half. Halteres pale yellowish basally, reddish brown apically. Coxae 

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

 brown, the first and second segments on the posterior legs narrowly 

 banded with silvery white; claws long, stout, strongly curved, 

 the pul villi shorter than the claws. Genitalia; basal clasp segment 

 long, slender; terminal clasp segment short, swollen basally; dorsal 

 plate short, deeply and roundly emarginate, the lobes narrowly 

 rounded; ventral -plate short, stout, deeply and triangularly 

 emarginate. Harpes short, stout, irregular. 



Female. Length 3.5 mm. Antennae dark brown; 22 segments, 

 the fifth with a length one-half its diameter; terminal segment 

 produced, with a length over twice its diameter and variably 

 ornamented with anastomosing circumfili. Palpi; the first segment 

 short, stout, subquadrate, the second about as long, irregular, 

 the third about twice the length of the second, greatly swollen 

 near the middle and tapering at both extremities. Color characters 

 and structure of wings and claws practically as in the opposite sex. 

 Ovipositor about one-half the length of the abdomen, the terminal 

 lobes slender, narrowly rounded. Type Cecid. 1056. 



