In the absence of Johnsongrass, the grasshoppers preferred a species of brome, Bromus catharticus. An unexpected result of the food selection tests was this grasshopper's voracious feeding on a forb, ...

The valley grasshopper has found several introduced weeds to its liking: redstem filaree, flixweed, and downy brome. The increase in number of favorable food plants appears to be an important factor ...