Trimerotropis gracilis is most common in the desert and dry grassland
of western Wyoming. It prefers areas with bare soil between sagebrush or
patches of grass. Its population diminishes in the denser grasses of eastern
Wyoming and does not occur east of Wyoming. Adults are common from mid
July through August. Although widely dispersed, population densities are
usually low. It is not considered an economic pest in Wyoming.
Ref: Otte 1984, and Capinera and Sechrist 1982.