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GKLA&M 
This is the third year in which collections have been made in 
Oklahoma during the adult survey, and 2,059 specimens were taken in 8 
major habitats — less than half the number collected in 1938. The 
reason for this is the fact that populations have fallen off to almost 
zero in many places. There were 45 species in the collections. Melan- 
oplus differentialis was the dominant species in 5 out of the 8 environ- 
ments and for the State as a whole. Aeoloplus turnbullii bruneri and 
M. packardii were dominant in small grain, with M, differentialis a close 
third, M. mexicanus has not been an important grasshopper in Oklahoma 
and is still far from being as important here as elsewhere. 
All but the Panhandle portion of the State has little or no in- 
festation. Texas and Cimarron Counties are by far the only two counties 
with severe infestations, where large areas of idle land, grain, and 
sorghum stubble have infestations. 
