40 
BULLETIN 427, "U. S. DEPARTMENT OF AGRICULTURE. 
larva has been parasitized it does not pupate, but soon breaks down 
and becomes semiliquid. 
The mature larva spins a light but tough white cocoon within the 
cocoon of its host, thus being well protected. This apparently 
Fig. 29.— Chelonus shoshoneanorum: Adult female. Much enlarged. 
(Original.) 
explains its comparative immunity from the secondary parasite 
Dibrachys boucJieanus. 
The adult feeds quite often at the oviposition wounds of its host. 
The adults are very hardy and the female is long lived. One female 
lived from July 19 to September 21, 1914, a period of 64 days, and in 
this time 291 adults were reared from this one specimen. When the 
Fig. 30. — Chdonous shoshoneanorum: Female ovipositing in egg of tuber 
moth. Much enlarged. (Original.) 
mortality of the stages under laboratory conditions is considered, it 
will be seen that this species is quite prolific. This female was fed 
sweetened water four times during this period. The life cycle varies 
from 10 to 38 davs in length. 
