# Crotalus triseriatus

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Crotalus_triseriatus
> Markdown URL: https://mediated.wiki/source/Crotalus_triseriatus.md
> Source: https://en.wikipedia.org/wiki/Crotalus_triseriatus
> Source revision: 1314381952
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Species of snake

Crotalus triseriatus Crotalus triseriatus in Morelia Zoo Conservation status Least Concern (IUCN 3.1)[1] Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Suborder: Serpentes Family: Viperidae Genus: Crotalus Species: C. triseriatus Binomial name Crotalus triseriatus (Wagler, 1830) Synonyms Uropsophus triseriatus Wagler, 1830 Crot[alus]. triseriatus — Gray, 1831 Crotalus lugubris (part) Jan, 1859 Caudisona lugubris — Cope, 1860 C[audisona]. triseriata — Cope, 1867 Crotalus pallidus Günther, 1895 Crotalus triseriatus — Boulenger, 1896 Crotalus triseriatus triseriatus — Klauber In Githens & George, 1931 Crotalus triseriatus anahuacus — Gloyd, 1940[2]

- ***Common names:** Mexican dusky rattlesnake,[3] dusky rattlesnake[4]*

***Crotalus triseriatus*** is a [venomous](/source/Venomous_snake) [pit viper](/source/Crotalinae) [species](/source/Species) found in [Mexico](/source/Mexico). Two [subspecies](/source/Subspecies) are currently recognized, including the [nominate subspecies](/source/Nominotypical_subspecies) described here.[5]

## Description

Adult male specimens of *C. triseriatus* commonly grow to a total length (including tail) greater than 60 cm (24 in), with females somewhat smaller. The maximum recorded total length is 68.3 cm (26.9 in).[3]

## Geographic range

The species *C. triseriatus* is found in [Mexico](/source/Mexico), along the southern edge of the [Mexican Plateau](/source/Mexican_Plateau) in the highlands of the Transverse Volcanic Cordillera, including the states of [Jalisco](/source/Jalisco), [México](/source/M%C3%A9xico_(state)), [Michoacán](/source/Michoac%C3%A1n), [Morelos](/source/Morelos), [Nayarit](/source/Nayarit), [Puebla](/source/Puebla), [Tlaxcala](/source/Tlaxcala), and [Veracruz](/source/Veracruz). The [type locality](/source/Type_locality_(biology)) given by [Wagler](/source/Johann_Georg_Wagler) in 1830 is "Mexico". A restriction to "Alvarez, San Luis Potosí, Mexico" was proposed by [H.M. Smith](/source/Hobart_Muir_Smith) and [Taylor](/source/Edward_Harrison_Taylor) (1950).[2]

## Habitat

*Crotalus triseriatus* occurs in pine-oak forest, [boreal forest](/source/Boreal_forest), [coniferous forest](/source/Coniferous_forest) and, [bunchgrass](/source/Bunch_grass) grasslands. On Volcán Orizaba, it is found at very high altitudes. There, the [snow line](/source/Snow_line) comes down to about 4,572 m (15,000 ft), while [green plants](/source/Green_plants) can be found up to 4,573 m (15,000 ft): the [species](/source/Species) has been found within this zone. However, it is most common at 2,700 to 3,350 metres (8,860 to 10,990 ft) in elevation.[3]

## Conservation status

The species *C. triseriatus* is classified as Least Concern on the [IUCN Red List](/source/IUCN_Red_List) of Threatened Species.[1] Species are listed as such due to their wide distribution, presumed large population, or because they are unlikely to be declining fast enough to qualify for listing in a more threatened category. The population trend was stable when assessed in 2007.[1]

## Feeding

Prey reportedly found in stomachs of *C. triseriatus* include a [frog](/source/Frog), a [murid](/source/Muridae) [rodent](/source/Rodent) (*[Neotomodon alstoni](/source/Neotomodon_alstoni)*), [lizards](/source/Lizard), other small [mammals](/source/Mammal), [crickets](/source/Crickets), and [salamanders](/source/Salamander).[3]

## Venom

Bite symptoms from *C. triseriatus* are reported to include intense pain, swelling, faintness, and cold perspiration.[3]

## Subspecies

Subspecies[5] Taxon author[5] Common name[4] Geographic range[2][3] C. t. armstrongi Campbell, 1979 western dusky rattlesnake Mexico: Jalisco and Nayarit C. t. triseriatus (Wagler, 1830) dusky rattlesnake Mexico: Michoacán, Morelos, México, Puebla, Tlaxcala and Veracruz

## Etymology

The [subspecific name](/source/Subspecies), *armstrongi*, is in honor of American herpetologist [Barry L. Armstrong](https://en.wikipedia.org/w/index.php?title=Barry_L._Armstrong&action=edit&redlink=1).[6]

## Taxonomy

In the relatively recent past, two additional [subspecies](/source/Subspecies) were described:[3]

- *C. t. anahuacus* [Gloyd](/source/Howard_K._Gloyd), 1940 - currently regarded as a junior synonym of *C. t. triseriatus*

- *C. t. quadrangularis* [Harris](https://en.wikipedia.org/w/index.php?title=Herbert_S._Harris&action=edit&redlink=1) & [Simmons](https://en.wikipedia.org/w/index.php?title=Robert_S._Simmons&action=edit&redlink=1), 1978 - currently regarded as a junior synonym of *[C. aquilus](/source/Crotalus_aquilus)*

## References

1. ^ [***a***](#cite_ref-IUCN_1-0) [***b***](#cite_ref-IUCN_1-1) [***c***](#cite_ref-IUCN_1-2) Canseco-Márquez, L.; Mendoza-Quijano, F. (2007). ["*Crotalus triseriatus*"](https://www.iucnredlist.org/species/64338/12771768). *[IUCN Red List of Threatened Species](/source/IUCN_Red_List)*. **2007** e.T64338A12771768. [doi](/source/Doi_(identifier)):[10.2305/IUCN.UK.2007.RLTS.T64338A12771768.en](https://doi.org/10.2305%2FIUCN.UK.2007.RLTS.T64338A12771768.en). Retrieved 18 November 2021.

1. ^ [***a***](#cite_ref-McD99_2-0) [***b***](#cite_ref-McD99_2-1) [***c***](#cite_ref-McD99_2-2) [McDiarmid RW](https://fr.wikipedia.org/wiki/Roy_Wallace_McDiarmid), [Campbell JA](/source/Jonathan_A._Campbell), [Touré TA](/source/T'Shaka_A._Tour%C3%A9) (1999). *Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1*. Washington, District of Columbia: Herpetologists' League. 511 pp. [ISBN](/source/ISBN_(identifier)) [1-893777-00-6](https://en.wikipedia.org/wiki/Special:BookSources/1-893777-00-6) (series). [ISBN](/source/ISBN_(identifier)) [1-893777-01-4](https://en.wikipedia.org/wiki/Special:BookSources/1-893777-01-4) (volume).

1. ^ [***a***](#cite_ref-C&L04_3-0) [***b***](#cite_ref-C&L04_3-1) [***c***](#cite_ref-C&L04_3-2) [***d***](#cite_ref-C&L04_3-3) [***e***](#cite_ref-C&L04_3-4) [***f***](#cite_ref-C&L04_3-5) [***g***](#cite_ref-C&L04_3-6) Campbell JA, Lamar WW (2004). *The Venomous Reptiles of the Western Hemisphere*. Ithaca and London: Comstock Publishing Associates. 870 pp. 1500 plates. [ISBN](/source/ISBN_(identifier)) [0-8014-4141-2](https://en.wikipedia.org/wiki/Special:BookSources/0-8014-4141-2).

1. ^ [***a***](#cite_ref-Meh87_4-0) [***b***](#cite_ref-Meh87_4-1) [Mehrtens JM](/source/John_M._Mehrtens) (1987). *Living Snakes of the World in Color*. New York: Sterling Publishers. 480 pp. [ISBN](/source/ISBN_(identifier)) [0-8069-6460-X](https://en.wikipedia.org/wiki/Special:BookSources/0-8069-6460-X).

1. ^ [***a***](#cite_ref-ITIS_5-0) [***b***](#cite_ref-ITIS_5-1) [***c***](#cite_ref-ITIS_5-2) ["*Crotalus triseriatus*"](https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=585832). [Integrated Taxonomic Information System](/source/Integrated_Taxonomic_Information_System). Retrieved 1 August 2007.

1. **[^](#cite_ref-6)** [Beolens B](/source/Richard_Allen_%22Bo%22_Crombet-Beolens), [Watkins M](/source/Michael_Watkins_(zoologist)), [Grayson M](/source/Michael_Grayson) (2011). *The Eponym Dictionary of Reptiles*. Baltimore: Johns Hopkins University Press. xiii + 296 pp. [ISBN](/source/ISBN_(identifier)) [978-1-4214-0135-5](https://en.wikipedia.org/wiki/Special:BookSources/978-1-4214-0135-5). (*Crotalus triseriatus armstrongi*, p. 11).

## Further reading

- [Campbell JA](/source/Jonathan_A._Campbell) (1979). "A New Rattlesnake (Reptilia, Serpentes, Viperidae) from Jalisco, Mexico". *Transactions of the Kansas Academy of Science* **81** (4): 365–370. (*Crotalus triseriatus armstrongi*, new subspecies).

- [Wagler J](/source/Johann_Georg_Wagler) (1830). *Natürliches System der AMPHIBIEN, mit vorangehender Classification der SÄUGTHIERE und VÖGEL. Ein Beitrag zur vergleichenden Zoologie*. München, Stuttgart and Tübingen: J.G. Cotta. vi + 354 pp. + one plate. (*Uropsophus triseriatus*, new species, p. 176). (in German and Latin).

## External links

- [*Crotalus triseriatus*](http://reptile-database.reptarium.cz/species.php?genus=Crotalus&species=triseriatus) at the [Reptarium.cz Reptile Database](http://reptile-database.reptarium.cz/). Accessed 12 December 2007.

Taxon identifiers Crotalus triseriatus Wikidata: Q839889 Wikispecies: Crotalus triseriatus ADW: Crotalus_triseriatus CoL: ZPDG GBIF: 2444358 iNaturalist: 30721 ITIS: 585832 IUCN: 64338 NCBI: 35025 Observation.org: 98426 Open Tree of Life: 628543 RD: triseriatus

---
Adapted from the Wikipedia article [Crotalus triseriatus](https://en.wikipedia.org/wiki/Crotalus_triseriatus) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Crotalus_triseriatus?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.