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Fig. 4. Elevation map of Wyoming adapted from Martner (1986).
Dark blue = <1200 m; light blue = 1200-1500 m; violet = 1500-1800 m;
brown = 1800-2100 m; green shading = 2100-2700 m; green = 2700-3350 m;
orange = >3350 m; black = state and county borders.
Fig. 1 (Updated from the 1960-93 map) Spatial distribution of rangeland
grasshopper outbreaks in Wyoming from 1944 to 1994, with no data for 1982,
1983 or 1984 (Schell 1994). White = no recorded infestations; light shading
= 1-2 yr infested; dark shading = 3-4 yr infested; purple = 5 yr infested;
blue-green = 6-7 yr infested; red = 8-9 yr infested; orange =10-11 yr infested;
yellow = 12-21 yr infested; black = state and county borders.