Grasshoppers of Wyoming and the West

Entomology

Wyoming Grasshopper Population Dynamics Maps

Infestation collapse 1975-76 map

from Chapter II of Spatial Analysis of Ecological Factors Related to Grasshopper

Fig. 10. Spatial distribution of rangeland grasshopper outbreaks during 1975-1976, when infestation area decreased by 52.0% from the previous year (dark shading = uninfested area; blue = area infested in 1975 only; yellow = area infested in 1976 only; green = area infested both years; black = state and county borders).

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