Females about 25-40 mm.

Variable, but slender; with lateral lobes of pronotum projecting somewhat downward at lower rear corner and usually somewhat angled or toothed there; median crest of pronotum distinct, twice cut, strongly bilobed on prozona (front part); hind tibiae usually greenish to blue toward northwest part of range, yellow to greenish in most areas, and yellow to red from central New Mexico into Texas and Chihuahua.