Encoptolophus costalis probably occurs throughout Wyoming but is under-represented in this survey because
it occurs late in the season. Populations concentrate along prairie streams but also
occur in open prairies. Eggs overwinter in the soil and hatch in late June or July.
Adults are present from late August to October. It feeds on grasses but is also known
to eat alfalfa. In Wyoming it occurs so late in the season that treatments have not
been applied.
Ref: Otte 1984, and Capinera and Sechrist 1982.
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