FIGURE 174.—Cocoon and larva of Janus abbrevi- 
atus in poplar shoot. 
within the shoot. When control measures 
seem advisable, cut and burn the infested 
shoots. The currant stem girdler (Janus 
integer (Nort.)) attacks currant in the 
Northeastern States. MHartigia trimacu- ey 
latus (Say) is also found through the PICURE 1%. Larva of Hartigia 
Northeastern States, and its larvae bore 7"@eWlatus in a rose stalk. 
fe - stems of blackberry and rose (fig. 
175. 
SuBorpER CLISTOGASTRA or APOCRITA 
BEES, WASPS, ANTS, AND PARASITES 
By Puiie B. DOWDEN 
The greater number of the Hymenoptera, including the bees, wasps, 
and parasitic forms, belong to the suborder Clistogastra. It is dis- 
tinguished by a basally constricted or petiolate abdomen and an 
ovipositor adapted for stinging or piercing. The larva is legless and 
maggotlhke in form. It has a definite head with mandibles or teeth 
attached, but in certain of the parasitic forms the head is greatly 
reduced. 
792440 °—49—_38 
