192 NEW YORK STATE MUSEUM 



yellow, the submedian lines thickly clothed with long, fuscous hairs. 

 Scutellum light reddish yellow with long setae apically, postscutellum 

 yellowish. Abdomen dark yellowish red, thickly clothed with dark 

 brown scales, the segments margined posteriorly with long, brown 

 setae, the second to fifth segments with a pair of submedian, very 

 small circular, orange spots near the distal third (these marks are 

 visible only in favorable light and appear to be places where the 

 black scales are missing). The sixth and seventh segments anc 

 genitalia fuscous yellowish; venter yellowish red, thickly clothed 

 with dark brown scales, except a narrow mesial area. Wings sub- 

 hyaline, brilliantly iridescent, costa black. Halteres whitish basally, 

 black apically. Pleurae and coxae yellowish transparent, the lat- 

 ter with the anterior pair thickly clothed with long, black setae. 

 Femora mostly dark brown or black, yellowish basally; tibiae 1 

 nearly uniform yellowish; tarsi fuscous yellowish, the three distal 



Fig. 22 Lasiopteryx flavotibialis, fourth antennal segment of 

 male (enlarged, original) 



segments black; claws long, slender, strongly curved, the pulvilli 

 shorter than the claws. Genitalia; basal clasp segment long, 

 slender; terminal clasp segment short, stout; dorsal plate broad, 

 broadly and deeply emarginate ; ventral plate long, broad, truncate. 

 Harpes long, tapering. 



Female. Length 2 mm. Antennae extending to the second ab- 

 dominal segment, sparsely haired, fuscous yellowish; 10 segments, 

 the fifth subsessile, cylindric, with a length fully twice its diameter ; 

 terminal segment greatly produced, tapering, obtuse. Mesonotum 

 yellowish brown, the submedian lines thickly setose. Scutellum 

 pale yellow, sparsely setose apically, postscutellum yellowish. Ab- 

 domen reddish salmon, uniformly clothed with dark brown scales, 

 terminal segments and ovipositor yellowish. Tibiae yellowish 

 basally, fuscous yellowish distally ; tarsi dark fuscous yellowish, 

 the distal segments black. Ovipostor one-third the length of the 

 abdomen, the terminal lobes short, narrowly rounded. Type Cecid. 



ai454- 



