180 Annals Entomological Society of America [Vol. XI, 



proper conditions, such parasites could be fed upon some 

 animal material other than insect larvae. This would make it 

 possible to rear parasites on a scale large enough to be of prac- 

 tical importance in the control of some insect pests, inasmuch 

 as one of the greatest difficulties in the raising of parasites, lies 

 in the problem of providing a sufficient amount of suitable food. 



SUMMARY. 



1. Dibrachys clisiocampce Fitch, is parasitic upon the larvae 

 and pupae of the wax moth and should be a valuable parasite in 

 controlling the wax moth in stored combs. 



2. The length of life cycle is rather variable requiring from 

 31 to 59 days for completion. 



3. The female parasite stings and kills the host before 

 ovipositing. 



4. It may be possible to rear these and other valuable 

 ectoparasites on some food, other than their natural host. 



EXPLANATION OF PLATE XIX. 



Fig. 1. Eggs of Dibrachys clisiocampcB on a pupa of the wax moth. 



Fig. 2. Larvae and eggs of Dibrachys clisiocampa Fitch upon larva of wax moth. 



Fig. 3. Young larvae of Dibrachys clisiocampa Fitch on wax moth larva. 



Fig. 4. Pupae of Dibrachys clisiocampcB Fitch upon a wax moth larva. 



