REPORT OF THE STATE ENTOMOLOGIST 1901 vais 
received and there is little reason for believing, after making 
allowance for the relative amounts of wheat grown in the various 
counties, that the conditions reported in this county were essen- 
tially different from those in some of the others. It has been 
estimated by good authorities that half the normal crop of New 
York was destroyed by the Hessian fly in 1901, entailing a loss of 
about $3,000,000. 
_ An investigation in the fall of 1901 showed that in regions 
where the Hessian fly had been injurious, mostly red wheat 
(largely no. 8 in some sections, at least) had been sown and that 
very little or no Hessian fly could be found in such pieces. A 
few of the pests were found in volunteer white wheat (no. 6) 
but no field of this was examined as none were in the vicinity 
of the places visited. 
Description of various stages. The adult fly is rarely observed 
by wheat growers. It is a small, nearly black, dark winged 
Fig.1 Hessian fly: afemale; bflaxseeds or puparia; clarva or maggot; dhead and breast 
bone of same; epupa removed from puparium; fpuparium or flaxseed; ginfested wheat stem ; 
hmale and female antennae; 6 and g about twice natural size, all others much more enlarged 
(after Marlett, U. S. dep’t agric. Farm bul. 132) 
midge about 3% inch in length and possesses very long, slender 
legs. There are a number of closely related flies which have a 
_ similar appearance but ordinarily if one about this size and hav- 
ing the general appearance represented in fig. la is found on 
