Tiger rattlesnake
Southwestern United States (south-central Arizona) and northwestern Mexico (Sonora); also on Isla Tiburón in the Gulf of California (McDiarmid et al., 1999).
Holotype: USNM 471 (McDiarmid et al., 1999).
Type-locality: "Sierra Verde and Pozo Verde." Pozo Verde is a spring located on the Sonoran side of the USA-Mexico border, near Sasabe. It is on the western slope of the southern end of the Sierra Verde (McDiarmid et al., 1999).
