NO. 22.] HYMENOPTERA OF CONNECTICUT. 521 



especially the posterior pair, whitish ; abdomen polished, im- 

 punctate, rather oval, orbicular when seen from the side, petiole 

 shorter than the posterior coxae and trochanters combined. 



E. diastrophi Walsh. 

 Female: length nearly 3-4 mm. Male: length about 3 mm. 

 Antenna? in both sexes at most rufous only basally, occasionally 

 entirely black; all coxae black, as are the hind femora and hind 

 tibiae, except at base and tip; femora and tibiae of mid legs and 

 femora of front legs often more or less marked with black ex- 

 ternally ; abdomen entirely black. 



Bred from the galls of Diastrophus cuscutcsformis. 



E. bolteni Riley. 



Female: length 4.5 mm. Male: length nearly 3 mm.; an- 

 tennae black ; legs mostly fulvous, coxae, femora, and more or less 

 of tibiae blackish brown; wings transparent, colorless, veins faint; 

 abdomen black, smooth and highly polished. 



Parasitic on larvae of Gelechia gallcesolidaginis. 



E. bicolor Walsh. 



Female: length 2-3 mm. Male: length nearly 3 mm. 

 Mostly honey-yellow ; head subopaque, confidently punctate ; occi- 

 put above, and a spot enclosing ocelli and extending in one male 

 in an angle nearly to the origin of the antennae, but usually more 

 or less widely confluent behind with the occipital spot, all black ; 

 scape honey-yellow except at tip, the second joint black, remain- 

 ing joints brown-black; thorax with its sculpture similar to that 

 of the head, but coarser; pronotum sometimes with only a black- 

 triangular area, usually entirely black ; propleurae usually parti) 

 black, with the black sometimes enclosing a pale dot ; mesonotum 

 and metanotum, except sometimes a small space above the wings, 

 black ; legs, including coxae and trochanters, honey-yellow, some- 

 times immaculate, usually with the femora and tibiae, especially 

 of the female, more or less lightly tinged or marked with dusky 

 above, each succeeding pair of legs more evidently so; wings 

 hyaline, veins brownish white, usually merging into brown-black 

 toward their tips; abdomen polished, black in the male, black, 

 with the venter and more or less of lower part of dorsum honey- 

 yellow, in the female. 



Bred from galls on black oak. 



