Crotalus willardi silus, the Western Chihuahuan ridge-nosed rattlesnake, is a subspecies of ridge-nosed rattlesnake native to Mexico and the USA. As with all rattlesnakes, it is venomous.[1]
| Crotalus willardi silus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Viperidae |
| Genus: | Crotalus |
| Species: | |
| Subspecies: | C. w. silus |
| Trinomial name | |
| Crotalus willardi silus Klauber, 1949 | |
Description
editCrotalus willardi silus is recognisable as it has less conspicuous markings than its sister subspecies. Its head is brown with irregular dark spots, it has a dark ocular band starting dark brown at the corner of the eyes and fades to grey as it reaches the end of the supralabials and the front of the head is usually grey. It lacks the facial markings seen in other subspecies of C. willardi.
Dorsally, the snake is brown or red with blotched and dotted with brown markings.[2] Its rattle is dark brown and rounded, with sharp scales as a sheath for it, as is characteristic of the species.[3]
It is also a smaller snake, measuring up to 63.6 cm (25 in).[3]
Diet
editReproduction
editCrotalus willardi silus is known to be ovoviviparous.[1]
References
edit- 1 2 "Crotalus willardi". The Reptile Database. Retrieved 2025-01-08.
- ↑ Van Devender, Thomas R.; Lowe, Charles H. (1977). "Amphibians and Reptiles of Yepómera, Chihuahua, Mexico". Journal of Herpetology. 11 (1): 41–50. doi:10.2307/1563290. ISSN 0022-1511.
- 1 2 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). [San Diego]: The Society.
- ↑ Brigham Young University.; University, Brigham Young; University, Brigham Young; Museum, M. L. Bean (1985). The Great Basin naturalist. Vol. v.45 (1985). Provo, Utah: M.L. Bean Life Science Museum, Brigham Young University.
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