No. 22.] HYMENOPTERA OF CONNECTICUT. 513 



all tarsal joints whitish and rest of legs greenish blue; abdomen 

 bluish green above. 



Bred from Andricus ventricosus. 

 °0. vacciniicola Ashmead. 



Female : length 2.5-3 ^^' y mostly blue-black, with a slight 

 metallic luster ; head finely transversely rugulose, antennse mostly 

 dark brown, scape rufous ; thorax with wrinkled sculpture almost 

 wanting; legs mostly pale brown with a reddish cast, posterior 

 femora slightly infuscated above, all coxae brown, except base of 

 posterior pair; wings hyaline with brown veins; abdomen much 

 compressed, brown with a metallic luster, a row of white hairs 

 on each segment except the basal one, the apex preduced into a 

 slender point. 



Bred from the gall-fly Solenozopheria vaccinii. 



°0. sp. 

 Bred from Diastrophus cuscutceformis. 



Megastigmus Dalman. 



°M. canadensis Ashmead. 



Female: length 2.5 mm.; mostly scaly punctate, and blue or 

 bluish green in color; head broader than thorax, antennas brown 

 and pubescent ; wings hyaline, stigmal vein knobbed and extending 

 to the middle of the wing*; legs mostly yellowish white, femora, 

 except at tips, brown or greenish; abdomen dull metallic green. 



Bred from an oak gall, Biorhisa forticornis. 

 °M. (?) flavipes Ashmead. 



Male: length 1.5 mm.; mostly light blue, finely and conflu- 

 ently punctate; antennas brownish black; wings hyaline, stigmal 

 vein rather as' in Torymus, knobbed, legs yellow; abdomen toward 

 apex aeneous. 



Reared from a cecidomyious larva on cedar. 



Diomorus Walker. 

 °D. zabriskei Cresson. 



Female : length 5 mm, ; mostly bright metallic green, varied 

 with shades of blue; antennae mostly black, base of scape testa- 

 ceous; thorax confluently punctate; wings hyaline, faintly dusky 

 at tips ; legs mostly green or blue, tibiae fuscous or black, whitish 



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