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Melanoplus sanguinipes, the migratory grasshopper, is common throughout the grasslands of Wyoming. When
the population is dense, large swarms can move around the state or into Wyoming from
adjacent states. The most recent outbreak of this species was from 1985 to 1987. Eggs
overwinter in the soil and hatch in June. Adults can be present from mid July to September.
It is a mixed feeder preferring forbs at low population densities, but at high populations
it can eat all the available rangeland forage. Control measures are often necessary
to protect rangelands but results can vary due to reinfestation by migration.
Ref.: Pfadt 1988, and Capinera and Sechrist 1982.
Distribution Atlas Links
Grasshopper Field Guide Links