19 
WHEAT MIDGE ; BED MAGGOT. 
wintering of the grub in the young Corn appears to do little harm, to 
prefer winter-sown corn to sowing in spring, when the Haulm Plies, 
hatched out of their winter quarter, are ready to lay, and cause in 
some cases (notably in 1841 and 1846) much injury to the summer 
crop. 
Wheat Midge ; Red Maggot. Cecidomyia tritici, Kirby. 
Cecidomyia tritici. 
1, Infested floret; 2-6 larva and cased larva (pupa?) nat. size and magnified; 
7-8, joints of antennae, magnified : 9 and 10, C. tritici , nat. size and magnified. 
Parasite flies,—11 and 14, Platygaster tipulce ; 12 and 13, Macroglenespenetrans, 
nat. size and magnified. 
At Park Farm, Kingsnortli, Mr. Hart mentions that the Wheat 
d ge was not nearly so abundant as it has been for several years 
past, but still too plentiful in White Wheat; and he mentions that he 
still takes the precaution to burn the dust that falls beneath the 
threshing machine, in which may be found the greater part of the 
Red Maggots which the crop contains. 
Mr. Russell Swan wick notes regarding the Wheat Midge, that it 
did somewhat less damage than of late years at the Royal Ag. 
College Farm, Cirencester, owing to its appearing a fortnight later 
than usual in comparison with the flowering time of the Wheat, and 
hence allowing the grains to become formed before the grub could feed 
on the sap. 
Even in these improved circumstances the damage cannot be put 
at less than 15 to 18 per cent., or over a sack per acre on 70 acres; a 
loss therefore of £70. 
