14 



INJURIOUS INSECTS OF 1904. 



ably have a little trouble with them next summer, and still more the 

 summer following. 



The life history, remedies and means of prevention of injury of 

 this pest were fully discussed in the Entomologist's report for 1903. 



THE FRIT FLY. 

 Oscinis soror, Macq. 



c 



Fig. I. — Frit Fly: a, adult; b, larva ^r maggot; c, puparium. Much enlarged. Lugger. 



This and the next described species are, without doubt, present 

 in this state. The writer has reason to believe, from various reports 

 of certain injuries to wheat through unknown causes, that both are 

 here in greater or less numbers, though he has not personally met 

 with either one of them. 



The Frit Fly, subject of this sketch, is a very small two-winged 

 insect, whose larva or maggot, b, is found in the stem of wheat just 

 above the first or second joint. The larva when full grown encases 

 itself in a brown covering, and then resembles somewhat the "flax- 

 seed" of the Hessian Fly. In fact the life history of this pest, and the 

 result of its work so closely resembles that of the Hessian Fly, partic- 

 ularly in the "crinkling down" or falling over of the wheat, that being 

 the first apparent evidence of its presence, that we suspect some of 



