. Circular. Insects. BRAKY Of TH£ UNIVERSITY of IIUWOI^ CIRCULAR NO. 53. United States Department of Agriculture, , DIVISION OF ENTOMOLOGY, L. O. HOWARD. Entomologist. THE YELLOW-WINGED LOCUST. I (Camnula pellucida Scudd.) By C. B. Simpson, Investigator, Division of Entomology. For many years past the yellow-winged locust, Camnula pellucida, has been a pest of the greatest importance in certain agricultural sec- tions of Idaho and Utah. Its injuries are so great that the natural development of these sections is se- riously interfered with, and often crops are almost a total loss. This inse
. Circular. Insects. BRAKY Of TH£ UNIVERSITY of IIUWOI^ CIRCULAR NO. 53. United States Department of Agriculture, , DIVISION OF ENTOMOLOGY, L. O. HOWARD. Entomologist. THE YELLOW-WINGED LOCUST. I (Camnula pellucida Scudd.) By C. B. Simpson, Investigator, Division of Entomology. For many years past the yellow-winged locust, Camnula pellucida, has been a pest of the greatest importance in certain agricultural sec- tions of Idaho and Utah. Its injuries are so great that the natural development of these sections is se- riously interfered with, and often crops are almost a total loss. This insect is quite generally distributed over the northern portion of the United States, but is injurious only in comparatively few localities in the West. It is quite variable in color, ranging from light yellow to brown, with all gradations between. The males are always smaller than the females, and can be easily distinguished • by the dif- ference in the end of the abdomen, which is more or less rounded in the male, while in the female it ends with four horny points. The nymphs or young locusts are of a dark color, some- times almost black. The young locusts depend entirely upon their legs for lo- comotion, as the wings in the earlier Fig. yellow-winged locust (Camnula Stages Consist Only of Small pads. Pelluvida): a, adult male; 6, female; c nymph—somewhat enlarged. (Original.) The life history of this insect is not so well known as that of many other injurious species. The eggs are laid in the ground during August in pod-like sacs containing from 20 to 30 eggs each. The female usually chooses sandy or gravelty spots in which to deposit eggs. In the latter part of May and in June the eggs hatch, and in about a month the locusts become full grown and winged and begin to migrate, and if in sufficient numbers they strip the vegetation in their path. Many of them remain along the path of migra-. Please note that these images are extracted from scanned page images that may
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