kingdom: Animalia >
phylum: Chordata >
subphylum: Vertebrata >
infraphylum: Gnathostomata >
parvphylum: Osteichthyes >
megaclass: Tetrapoda >
order: Squamata >
family: Viperidae >
subfamily: Crotalinae >
genus: Crotalus >
species: Crotalus intermedius Troschel, 1865 >
Mexico (disjunct populations in SE Hidalgo, Puebla, SW Tlaxcala, WC Veracruz, Oaxaca, Guerrero)
