No. 22.] HYMENOPTERA OF CONNECTICUT. 461 



Sympiesis Foerster. 

 °S. nigrifemora Ashmead. S, lithocolletidis Howard MS. 



Female: length 2-3.5 mm. J mostly blue, sometimes with a 

 greenish luster, more or less distinct on the head and thorax; 

 antennae brownish black; legs yellowish except the black or 

 bluish black femora, which latter may have a metallic luster, 

 the coxae which are blue, the apical joints of the tarsi which are 

 brown ; wings hyaline and more often nearly bare, veins pale 

 brown ; abdomen pointed ovate, slightly longer than the head 

 and thorax combined. 



Reared from balsam leaf-miner, oak leaf-miner, and trumpet 

 leaf-miner of the apple (Tischeria malifoliella) . 

 °S. tischeriae Ashmead. 



Female: length a little less or more than 2 mm.; mostly 

 metallic bluish green, coarsely squamose, with a few hairs; head 

 smooth, face blue ; legs uniformly pale yellowish, except the tips 

 of the apical tarsal joints, which are dusky; abdomen blue, with 

 an aeneous to brassy tinge. 

 °S. quercicola Ashmead. 



Female: length 2.5 mm.; mostly blue; antennae black; thorax 

 scaly, golden green above, except the metathorax, which is blue; 

 legs yellowish white ; abdomen with a reddish streak on each side 

 beneath. 



Reared from an oak leaf-miner. 

 °S. chenopodii Ashmead. 



Similar to the preceding, from which it differs as follows : 

 antennae mostly black, with a metallic tinge in certain lights, 

 scape pale at base ; thorax mostly . dull metallic green, smooth 

 and more pubescent, metathorax aeneous : legs whitish, more 

 pubescent; wings more pubescent, stigmal and post-marginal 

 veins brown ; abdomen aeneous. 



Reared from a Lithocolletis miner on Cheno podium hybridum. 

 °S. dolichogaster Ashmead. 



Female : length 4 mm. ; mostly blue, antennae dark brown ; 

 legs mostly pale yellowish white, apical tarsal joints brown; 

 wings hyaline; abdomen tv^ice as long as the head and thorax 

 combined, acuminate. 



