Body oblong ovate. Pronotum subquadrate, gently arcuate laterally, anterior angles always produced forward, angles ranging from acute and projected anterolaterally to broadly rounded, posterior margin not constricted. Prosternum strongly produced behind procoxae, forming posteriorly directled triangular wedge. Elytra asperately to muricately punctured, more or less striate. Profemora feebly to strongly spined in males, sinuate in females. Female genitalia with coxite with inner lobe projected and triangular, gonostyle large, flattened, positioned distally on outer lobe of coxite.Mohave, Coconino, Navajo, Apache, Yavapai, Gila, Graham, Greenlee, Maricopa, Pinal, Pima, Santa Cruz, Cochise counties, AZ. Texas west to Sonora, Mexico, north to Alberta, Canada