38 



BULLETIN 427, U. S. DEPAKTMENT OF AGEICULTURE. 



1915. 

 February 23. — 1 Sympiesis stigmatipennis adult issued. (Female.) 

 February 25. — 3 Sympiesis stigmatipennis adults issued. (Males.) 

 Life cycle 26 days at average mean temperature of about 52° F. 

 Longest life cycle noted, 45 days. 



CAMPOPLEX PHTHORIMAEAE CUSHM.^ 



During 1913 a very few adults of this species (fig. 25) were reared 

 from tuber-moth material collected near Puente, Cal. These speci- 

 mens could not be reared in the laboratory. In 1914 and 1915 

 the parasite became very abundant, and was reared from tuber-moth, 

 larvse, proving it to be a parasite of this species. 



Fig. 25. — Campoplex phthorimaeae; 



Adult female, with lateral view of abdomen. 

 (Original.) 



Much enlarged. 



Tests under laboratory conditions showed that it oviposits in the 

 tuber-moth larvae only where they act as leaf -miners, and prefers those 

 about half grown. The adult has been noted ovipositing both in the 

 field and in the laboratory. It is so active that the tuber-moth 



1 Chittenden Nos. 2230»3 and 2230M3. 



