482 JOURNAL OF ECONOMIC ENTOMOLOGY (Vol. 4 



Reared from an irregularly oval, blackish blister gall with a diameter 

 of 4 mm. on Aster undulatus collected at Magnolia, Mass., by Miss 

 Cora H. Clarke. Type C. a2056. 



Lasioptera allionioe n. sp. Female. — Length 1.25 mm. Antenna; short, fuscous; 

 sixteen segments, the fifth with a length three fourths its diameter. Palpi; the 

 first segment short, incrassate, the second quadrate, with a length about twice its 

 diameter, the third probably as long as the second, the fourth slender and presumably 

 one-half longer than the third. Mesonotum dark brown, broadly margined laterally 

 and anteriorly with short, silvery scales. Scutellum fuscous, sparsely clothed with 

 silvery scales, postscutellum fuscous. Abdomen a nearly uniform purplish black, 

 the first to the sixth segments with submedian, triangular, whitish sj^ots posteriorly; 

 venter suffused with white scales. Wings hyaline, costa dark brown, the discal 

 spot just before the basal half, the third vein uniting with costa near the basal third. 

 Halteres snow white. Coxa; dark brown; femora and tibia; yellowish basally, dark 

 brown apically; tarsi dark brown, probably banded; ovipositor yellowish, about 

 as long as the abdomen, the lobes narrowly oval, setose. 



Male. — Length 1.75 mm. Antennae dark brown; sixteen segments, the fifth with 

 a length about one fourth greater than its diameter, the terminal segment broadly 

 rounded apically, with a length three fourths its diameter. Mesonotum dark brown, 

 almost black, the submedian lines sparsely haired. Scutellum and postscutellum 

 dark brown. Abdomen apparently nearly uniformly clothed with dark brown scales; 

 genitaha fuscous. Wings hyahne, costa dark brown, the third vein uniting therewith ^ 

 near the basal half. Coxa^, femora and tibia; fuscous yellowish, the tarsi darker; 

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

 truncate; terminal clasp segment short, swollen basally; dorsal plate deeply and 

 triangularly incised, the lobes tapering, narrowly rounded; ventral plate rather long, 

 broadly rounded. Harpes stout, tapering; style narrowly rounded apically. 



Reared from an irregular, fusiform, stem gall on Oxybaphus 

 (Allionia) taken by Prof. E. Bethel at Boulder, Col. Type C. a2026. 



Lasioptera arizonensis n. sp. Male. — Length 1.75 mm. Antenna; dark brown; 

 sixteen segments, the fifth with a length one-fourth greater than its diameter; terminal 

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

 the second with a length about two and one half times its diameter, the third a Uttle 

 longer, more slender, the fourth one half longer than the third, more slender. Meso- 

 notum dark brown, the submedian lines thickly clothed with golden yellow scales. 

 Scutellum and postscutellum dark brown. Abdomen dark brown, the basal segment 

 and submedian spots on segments two to five silvery white; genitaha fuscous. 

 Wings hyaline, costa dark brown, subcosta uniting with the anterior margin near 

 the basal third, the third vein at the basal half. Halteres pale fuscous yellowish. 

 Legs mostly dark brown, the apices of femora and tibia; with the second and third 

 tarsal segments, and the fifth and sixth tarsal segments somewhat darker; claws 

 long, slender, strongly curved, unidentate, the pulvilli as long as the claws. Geni- 

 taha; basal clasp segment long, roundly truncate; terminal clasp segment with the 

 basal third strongly swollen; dorsal plate short, stout, deeply and narrowly incised, 

 the lobes broadly rounded; ventral plate long, slender, broadly rounded and sparsely 

 setose apically. Harpes long, slender, irregularly tuberciilate; style long, broadly 

 rounded apically. 



Female. — Length 2 mm. Antennae dark brown, twenty segments; the fifth with 



