No. 22.~\ HYMENOPTERA OF CONNECTICUT. 1 75 



oryssim:. 



Oryssus Latreille. 

 Key to Species. 



1. Abdomen entirely black; edge of ridge concealing bases of 



antennae not strongly reflexed; antennce distant at base; 

 legs marked more or less with white or reddish; wings 

 hyaline, with a smoky transverse band beyond the mid- 

 dle. Length 8-12 mm sayi 



Abdomen not entirely black 2 



2. Abdomen with three apical segments red ....sayi var. terminalis 

 Abdomen with six apical segments red ....sayi var. occidentalis 



O. sayi Westwood. Larva bores in maple. Stonington, 26 

 June, 1906 (W. E. B.). 



O. sayi var. terminalis Newman. Howard, Insect Book, 

 PI. xii, Fig. 26. Larva bores in maple. Hamden, 15 June, 191 1 

 (W. E. B.) ; Stonington, 5, 17 June, 1914 (I. .W. Davis). 



0. sayi var. occidentalis Cresson. Larva bores in sugar 

 maple. 



