156 



NEW YORK STATE MUSEUM 



Male. Length 2.5 mm. Antennae dark brown; 20 segments, 

 the fifth with a length more than twice the diameter; terminal 

 segment reduced, subglobular. Palpi; the first segment greatly 

 swollen, suboval, the second twice the length of the preceding, 

 swollen, slightly dilated apically, the third longer than the second 





a ~ b 



Fig. 24 Lasioptera ephedricola, a, sixth antennal segment of 

 male, b, sixth antennal segment of female, both greatly enlarged 

 (original) 



and more swollen. Face fuscous yellowish. Mesonotum black; 

 abdomen dark brown or black with basal and apical white bands on 

 the fifth segment, otherwise hardly banded. Wings hyaline, costa, 

 subcosta and the third vein thickly clothed with dark brown scales 

 the last uniting with costa at the distal third. Legs dark brown, 



claws long, stout, evenly 

 curved. Genitalia ; basal 

 clasp segment long, slender; 

 terminal clasp segment 

 short, greatly swollen at the 

 base. Dorsal plate very 

 short, broad, broadly and 

 triangularly incised ; ventral 

 plate broad, broadly 

 rounded. Harpes broad at 

 base, tapering, tuberculate. 

 Female. Length 2 mm. 

 Antennae dark brown, 

 sparsely haired ; 2 2 segments, 

 the fifth with a length about 

 one-half greater than its 

 diameter. Palpi; first seg- 

 ment short, quadrate, the 

 second produced, incrassate, 

 the third one-half longer 

 than the second, slender. 

 Mesonotum with three black 

 vittae, united anteriorly. 

 Abdomen with ten white spots, wings with a white discal spot. 

 Ovipositor short, the terminal lobes short, broadly rounded; near 

 the base a group of capitate processes, each with a length one-fourth 

 the diameter of the terminal segment. 



Fig. 25 Lasioptera 

 ovipositor retracted, 

 (original) 



ephedricola, 

 greatly enlarged 



