NEW YORK STATE MUSEUM 



This little parasite lias been credited with puncturing the 

 lIessi:T)) liy eggs and la^'ing its own therein to hatch later 

 .-and consume the larva. This was considered a very improbable 

 method of attack, as most true egg parasites complete their life 

 cycle within the egg itself though the observations of Marchal 

 on T r i c h a s i s have shown the probability of such a mode in 

 this species. 



Entedon ejiigonus Walker. This species was intro- 

 duced into this country in 1891 through the efforts of Dr C. V. 

 Riley who received parasitized pupae from Fred Enoch of 

 England. These were distributed to Prof. Forbes of Illinois, 

 Prof. Cook, then of Michigan, and Prof, Webster, then of Indi- 

 ana. It is impossible to state even at this date how much 

 Jbenefit may ultimately result from the introduction of this para- 



Fig. 5 Entedon epigonus Walk, (after Howard, Insect life, 7:356, 1895) 



site, but Mr Marlatt, writing of the Hessian fly in 1901, states 

 that considerable good may be expected from it. It had become 

 established in the vicinity of Washington I). C. and presumably 

 in Illinois, but whether it will continue to hold its own and prove 

 an efficient aid in the control of this serious pest remains to be 

 seen. 



Two other primary parasites of the Hessian fly are known in 

 America. They are Pteromalus pallipes Forbes and 

 Eupelmus allynii French. 



