50 
CORN. 
The Chlorops is a small stumpy black and yellow two-winged fly, 
about the eighth of an inch in length; it lays its egg on the lowest 
part of the ears whilst the plant is still young, and, by the feeding of 
the maggot hatched therefrom, the lowest part of the ear is injured, 
and a blackened channel formed from the ear to the uppermost knot. 
This blackened groove runs down one side of the upper part of the 
attacked stem; but, besides this, the plant is often so stunted in 
growth and weakened that the ear is unable to leave the sheath. 
Such an enormous quantity has been published from various 
sources regarding Hessian Fly attack during the last season that 
I have thought it best, in the above pages, merely to give the 
information which has been sent to myself in the senders’ own words, 
so far as in me lay; and it will perhaps be most serviceable to present 
it just as it stands for readers to draw their own conclusions. 
The two accompanying maps are merely added to give a general 
idea of the infested district. The localities which have been reported 
to myself, with specimens accompanying, and a few others which 
I have been informed of by competent observers, are distinguished by 
circles O or by groups of circles; the districts where the attack 
appeared in 1886-87 are marked by a black spot © (of which one 
will be seen in England and three in Scotland); where present in 
1886 only, by a square mark □; places where attack has been 
mentioned as present, but of which I have not personal knowledge, 
are marked by a cross x ; but, from the small size of the maps, the 
localities can only be generally indicated. From information received 
since the special reports were sent in, the East Eiding of Yorkshire 
should be added to the infested district. 
Note. — Hessian Fly in young Wheat. 
At present we have no reason to suppose that we suffer at all from 
attack in the young Wheat-plant, but we cannot be too much on our 
guard. The following observations by some of the best known observers 
show the general points of the attack to the young plant:— 
In the Report on Hessian Fly printed in Bulletin 4 of the United 
States Entomological Commission it is stated that “the worm in 
autumn lies at the sheathing base of the leaves just above the roots, 
at or near the surface.The worms before assuming the flax-seed 
state rest between the leaves and the stalk,” and the suction of the sap 
by the maggots causes the plant to become unhealthy, and to turn 
yellow and die. 
Dr. Lindeman also, in his work ‘ The Hessian Fly in Russia,’ 
mentions that the maggot living in the axil of the leaf bores holes in 
the tender little stem of the young plant, and thus deprives it of sap; 
but he notes that the leaves of the attacked plant die off at one time, 
“ commonly losing little of their green colour.” 
