E Cerci at base twice as wide as at expansion beyond middle; tegmina approximately length of pronotum; abdomen bright yellow beneath; top of abdomen with transverse light stripes; hind tibiae red; foothills and front range.
Cercus
Melanoplus dawsonii (Scudder)
See M. dawsonii fact sheet from Dr. Pfadt's Field Guide to Common Western Grasshoppers
E' Cerci at base about as wide as expansion beyond middle; tegmina approximately twice length of pronotum; abdomen not distinctly striped; hind tibiae red; foothills to timberline.