Trimerotropis barnumi is very similar to T. agrestis.
It is known from sand dunes in Utah and other Great Basin states. We collected
it in two different years from the same sand dune in northern Sweetwater
County. It probably occurs on other sand dune areas in southwest Wyoming.
Adults were collected on the 15th and 20th of August in an area of open
sand and Rumex plants. It is not considered a pest species of grasshopper.
Ref: Otte 1984.