STATE AGRICULTURAL SOCIETY. 
857 
explanation of plate one and two. 
EXPLANATION OP THE PLATES WHICH ACCOMPANY 
THE SIXTH AND SEVENTH REPORTS ON INSECTS. 
Plate 1. 
Fig. 1. Joint-worm fly, magnified, the cross lines on its left indi¬ 
cating its natural size, as in other instances. 
2. Angoumois moth. 
3. The same, newly hatched and extricating itself from a 
kernel of wheat. 
4. Mistaken parasite. 
a. Its antenna, more highly magnified. 
b. Antenna of the midge larva parasite, (from Curtis.) 
5. Grain aphis, the winged female. 
6. The same, the wingless female. 
Plate 2. 
Fig. 1. Wheat midge, female. 
a. Its natural size. 
2. Spotted-winged midge, ( Cecidomyia caliptera .) 
3. Dusky-backed midge, C. tergata. 
4. Wheat midge, male. 
5. Wing of the spotted-winged midge. 
6. Antenna of the male wheat midge, greatly magnified. 
1. The same of the female. 
8. Eggs ol the wheat midge, greatly magnified. 
9. A head of wheat,.the chaffs at ** opened by the yellow 
bird to pick the worms from the kernels of the grain, 
the kernels remaining at ff. 
10. A flower of wheat, opened to show the worms lying upon 
the kernel. 
a. The glume or outermost scale of the chaff. 
b. The outer jialea or the bearded chaff. 
c. The inner palea or inner chaff. 
d. The germ or young kernel. 
11. Larva of the wheat midge, as commonly seen, in repose. 
a. Its natural size. 
12. The same, when crawling on a wet surface, with its 
horns fully extended. 
a. Its natural size. 
