KiMiOTA 
This is the fifth year that (inflections have been made in 
Minnesota. Daring the season of 1939 there waS sbme misunderstanding re- 
garding the making of collections daring the adult survey. Therefore* 
there are no collections from the southwest quarter, where Melanoplus 
differentialis v/as the dominant species-. All of the collections for the 
eight designated environments are from the northwestern part of the State. 
The eastern part of the State is represented by a combined crop-and- 
pasture classification. 
There were 9,185 specimens in the collections, representing 22 
species. In the northwestern part of the State Melanoplus bivlttatus 
was dominant in sweetclover, alfalfa, corn, and flax. Oamnula pellucida 
was dominant in the bluegrass, quackgrass, and short-grass pastures. 
M. mexicanus was the most numerous in collections from small grain, 
potatoes, and field margins. In the eastern part of the State M . femur- 
rub rum was by far the dominant species in all environments. M. mexicanus 
and H. bivittatus have increased in relative abundance over 1938. 
The situation in Minnesota in the 1939 survey resolved itself 
into three rather distinct problems. The most severe infestations were 
in the western two or three tiers of counties, extending north and south 
throughout the length of the State. This area liras divided into two parts, 
owing to the differences in the important species. In the counties north 
of V/ilkin County the dominant species vras M. mexicanus . M. bivlttatus 
was of first importance and Camnula pellucida of second Importance. 
South of Wilkin County, in the southwestern part of the State, M. dif- 
ferentialis was the dominant species, iirith infestations along field 
margins and egg pods averaging 58 per square foot along some of the field 
edges. The third area of infestation lies in the east-central part where 
M. femur- rubrum was dominant, almost to the exclusion of the other species 
just mentioned. 
