SB 
818 
c57 
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8 
No. 53. 
uted States Department of Agriculture, 
DIVISION OF ENTOMOLOGY. 
L. O. HOWARD, Entomologist. 
THE YELLOW-WINGED LOCUST. 
(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.1.—The yellow-winged locust (Camnula 
stages consist only of small pads. pellucida): a, adult male; b, female; e, 
: . 5. ¢ : ymph—s »what enlarged. (Original.) 
inesmtenkistony of this,imsectisnot.“. °° 
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 gravelly 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- 
