392 Bulletin 265, 



constricted at the middle, briefly pedicellate and each with two whorls 

 of rather short hairs; club as long as scape, two-jointed. 



Abdomen with the petiole slightly longer than the hind coxae and 

 finely but distinctly rugulose reticulate; coxae with the same sculpture 

 above. The body of abdomen is highly arched above, squarely declivous 

 in front; the fourth segment is longer than the fifth and sixth together. 



The egg and the method of oviposition are unknowm. 



It is abundant at Ithaca, N. Y., and we have received Sumac seeds 

 from George D. Shafer, East Lansing, Mich., infested by larvaa probably 

 belonging to this species. 



