THe HyMeENopTerA OF MINNESOTA 223 
These wasps make burrows in sandy places and provision their 
nests chiefly with grasshoppers and crickets. 
They are active insects and very hard to net in the field. The 
small Lyroda subita feeds its young daily with crickets. We have 
recorded as occurring here Tachytes crassus Patt. and Tachysphex 
terminatus Sm. 
Fig. 112. Tachytes crassus Patton, 
male. 
ASA DATE 
Abdomen depressed, dorsal surface flattened; intermediate tibiae with two apical 
spurs; radial cell truncate; wings with three cubital cells. (Listed as a subfamily 
in Conn. Hym.) 
The males of this family are characterized by the possession of 
very large eyes. Members of the group are partial to the Heteroptera 
in the matter of food. At least two species select bugs and do not 
paralyze, but kill them. 
