Subspecies and Distribution. A.a.americanaOrd,1815—fromSCanada(SAlberta&SSaskatchewan)toN&CMexico. A.a.peninsularisNelson,1912—Mexico(NBajaCalifornia). A. a. sononensis Goldman, 1945 — USA (S Arizona) and Mexico (N Sonora). It was introduced on Lanai Island (Hawaii) in 1959; however, it never became well established there and seems headed for extinction. in Antilocapridae - Don E. Wilson (Lynx Edicions, 2011)