Crotalus ruber lucasensis

Crotalus ruber lucasensis, the San Lucan diamond rattlesnake,^[3] is a venomous pitviper subspecies^[4] found in Mexico in the Cape region of lower Baja California.

Crotalus ruber lucasensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Viperidae
Genus:	Crotalus
Species:	C. ruber
Subspecies:	C. r. lucasensis
Trinomial name
Crotalus ruber lucasensis Van Denburgh, 1920
Synonyms
Crotalus lucasensis Van Denburgh, 1920 Crotalus atrox lucasensis – Schmidt, 1922 Crotalus ruber lucasensis – Klauber, 1949 Crotalus exsul lucasensis – Grismer, McGuire & Hollingsworth, 1994 Crotalus ruber lucasensis – Mattison, 2007[1][2]

Description

Similarly to C. r. ruber, adult specimens commonly exceed 100 centimetres (39 in) in length. Both of these subspecies can be identified by having prenasals that are usually in contact with the first pair of supralabials, an absence of interchinshields, and by having tail rings that are either complete, or broken at the midline, but usually not laterally.^[5]: 579 However, this subspecies in particular exhibits a tendency for rattle loss.^[5]: 491

Geographic range

Found in Mexico in the cape region of lower Baja California. The type locality given is "Agua Caliente, Cape Region of Lower [Baja] California, Mexico."^[1]