ILE UST RA TPO: 
PLATES. 
Puate IV. Ravages of the chinch bug (Blissus leucopterus). Fig. 1.—Corn plant 
killed by chinch bug. Fig. 2.—Chinch-bug ravages in cornfield in 
J 5 5D 5D 5 
southern Kansas, 1910. Fig. 3.—Cornfield adjoining wheat field 
VY. Hibernation of the chinch bug. Fig. 1.—Pile of sorghum canes in 
which no hibernating chinch bugs could be found. Fig. 2.— 
Waste land along stream in foreground, sedge-grass meadow in 
background; chinch bugs found hibernating in both. Fig. 3.— 
Clumps of red sedge grass (Andropogon scoparius) in which over 
6,000 chinch bugs were found hibernating during winter of 1909-10. 
TEXT FIGURES. 
Kia. 11. Map showing distribution of the chinch bug west of the Mississippi 
Rivers NGMles sy se cos RAs oe Re ean Bene nee eee 
2. Corn plant about 2 feet tall, infested by chinch bugs.......-..----.-. 
13. The chinch bug (Blissus leucopterus): Eggs, larvee, details.......----- 
14. The chinch bug: Adult of long-winged form ..........-.....-.-.--- 
15. The chinch bug: Adults covered with ‘‘white fungus ” (S porotrichum 
QLODUIIETUND) eiqamee Pee eee aie pics iojafavel stone er apishetauars Arann syaiare, ve 
Vy 
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