30 DEPARTMENT BULLETIN 779. 
Telenomus ashmeadi in the natural control of C. sayi. Frequently 
death does not occur until several hours, or even days, after the 
parasite has left the body of its host, the host meanwhile remaining 
inactive. 
Although eggs are deposited on the nymphs, no instances were ob- 
served in which the larve of G. fuliginosa completed their develop- 
ment and issued before the host reached its adult stage. 
The seasonal history of @. fuliginosa corresponds very closely with 
that of C. sayz and there are the same number of generations annually. 
The adults are engaged actively in parasitizing C. sayi throughout 
Fic. 13.—Ocypterodes euchenor, a fly parasite of the grain-bug adult. Much enlarged. 
the period of activity of the host, extending from April to October 
or November. They are most numerous during the months of July 
and August, and at this time a dozen or more individuals have been 
collected by a few sweeps of the net in fields that were heavily in- 
fested with C. sayi. 
The parasite hibernates, in some instances at least, as a larva within 
the body of its host. In February, 1916, during severe winter weather, 
25 adults of C. sayi were collected from hibernation at French, N. Mex., 
and placed ina heated room. They became active within a few hours 
and 3 days later 2 larve of @. fuliginosa issued. ‘These larvee were 
placed in a pupating cage and the resulting adults emerged 16 days 
later. It is probable that the parasite also hibernates as a puparium 
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