40 



BULLETIN 427, U. S. DEPARTMENT OF AGEICULTURE. 



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 houcheanus. 



The adult feeds quite often at the oviposition wounds of its host. 

 The adults are very hardy and the female is long Hved, 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. — Chelonous shoshoneanorum: Female ovipositing in egg of tuber 

 moth. Much enlarged. (Original.) 



mortahty of the stages under laboratory conditions is considered, it 

 will be seen that this species is quite prohfic. This female was fed 

 sweetened water four times during this period. The life cycle varies 

 from 10 to 38 days in length. 



