THR MONTHLY HULLETIN. 



11»9 



Feeding Habits of Adults. The adults of both sexes of CaUic- 

 phialtcs sp. feed freely on sugar Avater, honey, honeydew and other sweet 

 liquids supplied thein. They will also feed freely on the body contents 

 of the codling moth larva and several have been observed to have fed 



Fig. 5S. — Female of CalliephiaJtes sp. punctur- 

 ing- cocoon of host. About three times enlarged. 

 (Original.) 



for over liiirty minutes on the juices of the host. These made openings 

 in the skin of the ai)ple worm with their mandibles but often they will 

 feed at the wounds made by the ovipositor. 



Mating. .Mating between the sexes of CalliephiaUes sp. takes 

 place usually within twenty- four hours after the female emerges. The 

 sexual attraction is very weak. The newly emerged female submits to 

 the attentions of the male readily at the first mating. They may copu- 

 late more than once, one female being observed in copula three times 

 within four days after eclosion. They remain in copulation about four 

 minutes. As the female becomes older she is less attracted to the male 

 and resists apparently successfully all advances of the other sex. 



Parthenogenesis. The work of K. A. ("ushman (loe. cit.) on this 

 species has shown that parthenogenesis does occur, the progeny, how- 

 ever, being all males. 



Development of the Eggs. The newly emerged female of Callie- 

 phiaUes sp. is sexually immature. At a mean temperature of 61° F. 

 the ovaries of several females examined eight days after emergence 

 showed the ova not yet half developed. Of course at higher tempera- 

 tures the ova Avill develop much faster. The ovipositor is soft and of a 

 whitish color after the female emerges and requires some time in which 

 to harden sufficiently to penetrate the host cocoon. This whitish color 

 gradually changes to the reddish of the sexually mature female. For 

 several females of CaUicphialtrs the color of the ovipositor did not 

 l)egin to turn noticeably darker until over twelve hours had elapsed 

 after their emergence. They were kept at a temperature of 61° F. 

 Two days usually suttee for the ovipositor to l)ecome entirely colored 

 and several days more must elapse before the chitin becomes sufficiently 

 hard for oviposition to take place. 



