H. selenopoides - primarily east of the Colorado River in southwest AZ and into mainland Mexico. Isolated specimens collected in CA (Inyo County), NV (Clark and Nye Counties), and northwest AZ (Mohave County)
H. theologus - CA (Riverside, Imperial, and San Diego Counties), primarily west of the Colorado River and into Baja California. Isolated specimens collected in CA (San Bernardino County) and NV (Clark County)