Giant Mesquite Bug, Thasus neocalifornicus, 2 in / 5.1 cm. Inhabit the Sonoran Desert and the Baja California. The only member of the Genus found in North America. Climbing on a mesquite tree. Found in Arizona, Baja California Sur and New Mexico.
Procter Road Parking Lot, Madera Canyon, Santa Rita Mountains, Pima County, Arizona, United States.