Animalia > Chordata > Squamata > Viperidae > Crotalus > Crotalus willardi

Crotalus willardi (willardi)

Wikipedia Abstract

Crotalus willardi is a venomous pit viper species found in the southwestern United States and Mexico. It is the most recent rattlesnake species to be discovered in the United States. Its specific name is in honor of its discoverer, Professor Frank C. Willard. Five subspecies are currently recognized, including the nominate subspecies described here. The Arizona ridge-nosed rattlesnake is the state reptile of Arizona.
View Wikipedia Record: Crotalus willardi

Infraspecies

Crotalus willardi amabilis (Del Nido ridgenose rattlesnake)
Crotalus willardi meridionalis (Southern ridgenose rattlesnake)
Crotalus willardi obscurus (New Mexico ridgenose rattlesnake)
Crotalus willardi silus (Chihuahuan ridgenose rattlesnake)
Crotalus willardi willardi (Arizona ridgenose rattlesnake)

Attributes

Adult Weight [1]  100 grams
Litter Size [1]  7
Maximum Longevity [2]  21 years
Venomous [3]  Yes

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Sierra Madre Occidental pine-oak forests Mexico, United States Nearctic Tropical and Subtropical Coniferous Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Reserva de la Michilia Biosphere Reserve VI 23405 Durango, Mexico  

Biodiversity Hotspots

Name Location Endemic Species Website
Madrean Pine-Oak Woodlands Mexico, United States Yes

Range Map

External References

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 3Living Hazards Database, Armed Forces Pest Management Board, U.S. Army Garrison - Forest Glen
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0