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185 
Pruate III. 
SORGHUM PLANT-LICE. 
(Original.) 
The Yellow Sorghum Aphis, Chaitophorus flavus, n.s., winged 
viviparous female; magnified twenty diameters ; a, antenna 
of the same, more highly maguified. 
Chaitophorus flavus, wingless viviparous female; mag- 
nified twenty-five diameters. 
Chaitophorus flavus, pupa, side view. 
The same, dorsal view. 
The corn Plant Louse, Aphis maidis, winged viviparous 
female; magnified twenty-three diameters; a, antenna; c, 
honey-tube, more highly magnified. 
Puate LY. 
CORN AND SORGHUM INSECTS. 
‘Original ) 
Aphis maidis, wingless female. 
The same, pupa. 
The same, root form, wingless female. 
Schizoneura panicola, from sorghum roots; magnified twenty 
diameters; a, antenna, more highly magnified. 
Black-headed Grass Maggot, Sciara, sp.; magnified five 
diameters. 
Maxilla of the same. 
Mandible. 
Labrum, upper surface. 
Labrum, lower surface. 
Puate V. 
Diabrotica longicornis, imago of Corn Root- Worm; magnified 
ten diameters. 
Corn Root-Worm larva; magnified six diameters. 
Corn root broken across, to show larva within. 
Kee of Diabrotica longicornis; magnified eighty diameters. 
Pupa of the same. 
The Strawberry Worm, Hmphytus maculatus: 1, ventral view 
of pupa; 2, side view of same; 3, enlarged sketch of per- 
fect fly, the wings on one side detached; 4, larva crawl- 
ing, natural size; 5, perfect fly, natural size; 6, larva at 
rest; 7, cocoon; 8, enlarged antenna, showing joints; 9, 
enlarged egg. (After Riley.) 
—18 
