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WYOMING- 
In the agricultural areas of Routing, alfalfa and wild hay are the 
major crops, with small grains next, followed by corn and sorghums. 
M e lan o plus mexicanus probably has been the most important species and in 
certain localities at various times M, bivittrtus , M. f emur- rub rum , and 
Camnul a pellucida were numerous, 
For all species 1936 to 1939, inclusive, were the years of great- 
est infestation. In 1940 there- was a sharp decrease to a very low popula- 
tion. There was a marked increase of M e ianoplus f emur- mb rum in 1941 f 
but M. mexicanus , M. bivitto.tus , and Camnula pellucida remained at a low 
level in all habitats. M. femur- rub rum is not so destructive as the other 
three species. 
