622 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Key to Genera. 



1. Mandibles tridentate 2 



Mandibles simple or bidentate 4 



2. First abdominal segment subpetiolate, much smaller than 



second Bruesia p. 622 



First abdominal segment broadly sessile with second 3 



3. Female without a pygidium; male with two cubital cells .... 



Pseudomethoca p. 622 

 Female with a well defined pygidium; male with three 

 cubital cells Nomiaephagus p. 623 



4. Eyes round, polished, not facetted; radial cell truncate at 



apex; first abdominal segment posteriorly narrower than 



second Dasjrmutilla p. 623 



Eyes oval, facetted 5 



5. Apex of first abdominal segment nodose, not as wide as base 



of second; eyes of male emarginate within Ephuta p. 625 



Apex of first abdominal segment as wide as base of second 6 

 within '. Timulla p. 625 



6. Female with a distinct pygidium; eyes of male emarginate 

 Female without a pygidium; eyes of male entire within.... 



Sphaerophthalma p. 625 



Bruesia Ashmead. 



This specific group was also named Pycnomutilla by Ashmead. 

 The following- key is based on the males. 



Key to Species. 



Carina of first ventral abdominal segment nearly straight 



harmonia 

 Carina of first ventral abdominal segment with a strong tooth 

 anteriorly harmoniiformis 



''B. harmonia Fox. 



The female is ferruginous, with black legs. The second 

 dorsal abdominal segment has pale spots and the pubescence is 

 sparse. 



*B. harmoniiformis Rohwer. 

 The female is unknown. 

 Type locality: Lyme, 31 July, 191 1 (A. B. C). 



Pseudomethoca Ashmead. 

 P. canadensis Blake. 



Posterior lateral margin of the head dentate or carinate. 

 Female ferruginous, apex of the abdomen blackish. Male black. 



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