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Crotalus willardi amabilis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Viperidae
Genus:	Crotalus
Species:	C. willardi
Subspecies:	C. w. amabilis
Trinomial name
Crotalus willardi amabilis Anderson, 1962

Crotalus willardi amabilis, the Del Nido Ridge-nosed Rattlesnake, is a subspecies of ridge-nosed rattlesnake native to Sierra del Nido, Chihuahua, Mexico. As with all rattlesnakes, it is venomous.

Description

C. w. amabilis is recognised by its facial stripes, its red/pink colouration and its specific scale counts. The subspecies is distinguished from its sister subspecies by a higher number of dorsal blotches which averages 39.5.

Sexual dimorphism can be seen in its specific scale counts and tail length, with males' tails averaging 11.5% of their length, and females' tails averaging 9.3%.

Habitat

The subspecies is known to inhabit isolated, high, forested areas of Sierra del Nido.

Reproduction

C. w. amabilis is known to be ovoviviparous.

References

1. ^ "Crotalus willardi". The Reptile Database. Retrieved 2025-01-08.
2. ^ Anderson, James D. (1962). "A New Subspecies of the Ridged-Nosed Rattlesnake, Crotalus willardi, from Chihuahua, Mexico". Copeia. 1962 (1): 160–163. doi:10.2307/1439491. ISSN 0045-8511.

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