NO. 22.] HYMENOPTERA OF CONNECTICUT. 189 



45. First dorsal abdominal plate distinctly less than twice as long 



as wide at base; first and second dorsal abdominal plates 

 at least mostly smooth and polished; hind coxae black .... 46 

 First dorsal abdominal plate at least nearly twice as long 

 as wide at base 47 



46. Hind femora black, wings whitish; propodeum without a 

 distinct median longitudinal carina; first dorsal abdom- 



inal plate rounded at apex cassianus 



Hind femora mostly stramineous in female, mostly blackish 

 in male euchaetis 



47. First and second dorsal abdominal plates sculptured, venter 



more or less stramineous; propodeum black or blackish 

 and with a median longitudinal carina; tegulae stramine- 

 ous 48 



First and second dorsal abdominal plates smooth and pol- 

 ished, the latter plate apparently twice or more than twice 

 as wide at apex as at base militaris 



48. Hind legs including coxae almost entirely stramineous 



radiatus 

 Hind legs mostly brownish and blackish and with their coxae 

 black ornigis 



49. Propodeum without a median longitudinal carina but usu- 



ally with a more or less distinct areola 50 



Propodeum with a median longitudinal carina and without an 

 areola; second dorsal abdominal plate transversely oblong 

 and distinctly shorter than third, the latter virtually en- 

 tirely smooth (Pseudapanteles) consimilis 



50. Propodeum exareolate or at least without costulae 51 



Propodeum areolated or at least with costulae 62 



51. Hind femora brownish or blackish; first dorsal abdominal 



plate at least one and one-half times as long as wide at 



base 5 2 



Hind femora stramineous or reddish, at least in part; first 

 dorsal abdominal plate nearly one and one-half times as 

 long as wide at base 59 



52. Tegulae stramineous; first dorsal abdominal plate at most ap- 



parently only twice as long as wide at base and apparently 

 narrower at apex than at base; scutel polished, virtually 



impunctate, wings including stigma brownish S3 



Tegulae black 54 



53. Second dorsal abdominal plate granular, third dorsal abdom- 



inal segment sculptured housatannuckorum 



Second dorsal abdominal plate coarsely longitudinally stri- 

 ated, third coarsely sculptured at base ornigis 



54- First dorsal abdominal plate not or apparently not narrower 

 at apex than at base, and with or without a median fovea; 

 third dorsal abdominal segment indistinctly sculptured. . 55 



