No. 22,] HYMENOPTERA OF CONNECTICUT, 655 



NYSSONINI. 



This tribe is represented in the State by one genus which is 

 divisible into a number of subgenera, but as only three species are 

 known to occur within the State the names of subgenera have 

 been omitted. 



Nysson Latreille. 

 The species of this genus, according to Ashmead, nest in sand. 



Key to Species. 



1. Submedian cell of hind wings terminating before origin of 



cubitus; markings yellow tramosericus 



Submedian cell of hind wings terminating at or before origin 

 of cubitus 2 



2. Scutellum margined at sides; last dorsal segment of abdomen, 



in male, ciliated between teeth aequalis 



Scutellum not margined at sides; last dorsal segment of the 

 abdomen, in male, not ciliated between teeth lateralis 



N. aequalis Say. 

 N. lateralis Packard. 



Both this and the preceding species occur nearly throughout 

 the State. 



N. tramosericus Viereck. 



Poquonock, 27 June, 1905 (H. L. V.). 



GORYTINI. 

 Key to Genera. 



First abdominal segment as broad apically as second is 

 basally Gorjrtes p. 655 



First abdominal segment much narrower apically than second 

 is basally Pararaellinus p. 656 



Gorytes Latreille. 



Gorytes mystaceus (Linnaeus), according to Westwood, preys 

 on the larvae of Aphrophora spumaria. This is an European 

 species, but is related to the American species, which may have 

 similar habits. No species of this genus has as yet been taken in 

 the State, but G. nigrifrons Smith will no doubt be found in the 

 Austral life zone. This species is black, marked with yellow, the 

 yellow band on the first dorsal abdominal segment is larger than 

 that of the following segments. The radial cell is fuscous. The 



