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Crotalus willardi meridionalis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Viperidae
Genus:	Crotalus
Species:	C. willardi
Subspecies:	C. w. meridionalis
Trinomial name
Crotalus willardi meridionalis Klauber, 1949

Crotalus willardi meridionalis, the southern ridge-nosed rattlesnake, is a subspecies of ridge-nosed rattlesnake native to Durango and Zacatecas, Mexico. As with all rattlesnakes, it is venomous.

Description

Crotalus willardi meridionalis differs from its sister subspecies by lacking a stripe along its rostral and mental along with other headmarkings and by its specific scale count. Its rattle is sheathed by sharp scales, as is characteristic of the species.

Reproduction

Crotalus willardi meridionalis is known to be ovoviviparous.

Etymology

The name 'meridionalis' the latitude it was found in.

References

1. ^ "Ridge-nosed Rattlesnake – Tucson Herpetological Society". Retrieved 2025-01-08.
2. Saviola, Anthony J.; Gandara, Anthony J.; Bryson, Robert W.; Mackessy, Stephen P. (2017-11-01). "Venom phenotypes of the Rock Rattlesnake (Crotalus lepidus) and the Ridge-nosed Rattlesnake (Crotalus willardi) from México and the United States". Toxicon. 138: 119–129. doi:10.1016/j.toxicon.2017.08.016. ISSN 0041-0101.
3. ^ "Crotalus willardi". The Reptile Database. Retrieved 2025-01-08.
4. San Diego Society of Natural History.; History, San Diego Society of Natural (1946). Transactions of the San Diego Society of Natural History. Vol. v.11 (1946–1953). : The Society.
5. San Diego Society of Natural History.; History, San Diego Society of Natural (1946). Transactions of the San Diego Society of Natural History. Vol. v.11 (1946–1953). : The Society.

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