| Higher Taxa | Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Uracoan Rattlesnake
G: Uracoa-Klapperschlange |
| Synonym | Crotalus vegrandis KLAUBER 1941: 334
Crotalus durissus vegrandis — KLAUBER 1956
Crotalus vegrandis — HOGE 1966
Crotalus vegrandis — PETERS & OREJAS-MIRANDA 1970: 77
Crotalus vegrandis — MCCRANIE 1984
Crotalus durissus vegrandis — WELCH 1994: 45
Crotalus vegrandis — KORNACKER 1999: 175
Crotalus durissus vegrandis — CAMPBELL & LAMAR 2004
Crotalus durissus vegrandis — QUIJADA-MASCAREÑAS & WÜSTER 2006
Caudisona vegrandis — HOSER 2009
Crotalus vegrandis — RIVAS et al. 2012
Crotalus vegrandis — WALLACH et al. 2014: 196
Crotalus vegrandis — BENYR 2016
Crotalus durissus vegrandis — CARBAJAL-MÁRQUEZ et al. 2020 |
| Distribution | E Venezuela
Type locality: Uracoa, District Sotillo, Maturin, Estado Monagas, Venezuela.
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| Reproduction | ovoviviparous. |
| Types | Holotype: CM 17384, a 636 mm male; Paratype SDNHM = SDSNH 34607 |
| Diagnosis | Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 4043 characters), are available for collaborators and contributors. Please contact us for details. |
| Comment | Venomous!
Synonymy: RIVAS et al. 2012 consider C. vegrandis a full species mostly based on the following morphological differences: smaller length, peculiar colour pattern composed of gray and/or reddish brown ground colour with large white flecks distributed as irregular rings (vs rhomboidal blotches in C. durissus). However, CARBAJAL-MÁRQUEZ et al. 2020 found that vegrandis is more closely related to durissus than C. vegrandis, hence both should be subspecies of durissus (or possibly valid species.) Reyes-Velasco et al. 2022 failed to recover C. simus, C. unicolor and C. vegrandis as distinct from C. durissus (using DELINEATE, a relatively new species delimitation method).
Nomenclature: Hoser’s 2009 classification and nomenclature has been rejected as unnecessary and unavailable by WÜSTER & BERNILS 2011. |
| Etymology | Named after Latin vegrandis, far from large, puny. [“...A species allied to C. durissus but differing therefrom, and from others in the same group, in being a dwarfed form with a peculiar pattern...”]. (from Esteban Lavilla, pers. comm., May 2024) |
| References |
- Benyr, Gerald 2016. Eine Checkliste von Sicherheitsvorkehrungen bei der Haltung von Giftschlangen. Terraria-Elaphe 2016 (2): 66-70 - get paper here
- Campbell, Jonathan A. and William W. Lamar 2004. The Venomous Reptiles of the Western Hemisphere, 2 vols. Comstock (Cornell University Press), Ithaca, NY, 962 pp. [review in Science 305: 182]
- CARBAJAL-MÁRQUEZ, RUBÉN ALONSO; JOSÉ ROGELIO CEDEÑO-VÁZQUEZ, ARELY MARTÍNEZ-ARCE, EDGAR NERI-CASTRO, SALIMA C. MACHKOUR- M’RABET 2020. Accessing cryptic diversity in Neotropical rattlesnakes (Serpentes: Viperidae: Crotalus) with the description of two new species. Zootaxa 4729 (4): 451–481 - get paper here
- Chiszar, D., J. Chiszar, T. Walsh, B. Demeter & H.M. Smith 1984. Effect of male courtship on strike-induced chemosensory searching in a female Uracoan rattlesnake (Crotalus vegrandis) at National Zoo Bull. Maryland Herpetol. Soc., 20(4): 145-151. - get paper here
- Hoge, A.R. 1966. Preliminary account on Neotropical Crotalinae (Serpentes: Viperidae). Mem. Inst. Butantan 32 [1965]: 109-184 - get paper here
- Hoser, R. 2009. A reclassification of the rattlesnakes; species formerly exclusively referred to the genera Crotalus and Sistrurus. Australasian J. Herpetol. 3: 1-21 - get paper here
- Klauber, Laurence M. 1941. A new species of rattlesnake from Venezuela. Transactions of the San Diego Society of Natural History 9 (30): 333-336 - get paper here
- Kornacker,P.M. 1999. Checklist and key to the snakes of Venezuela. PaKo-Verlag, Rheinbach, Germany, 270 pp.
- Lancini-Villalaz, A.R. 1966. Crotalus vegrandis KLAUBER, redescripción y distribución. Mem. Inst. Butantan 33 (3): 725-734
- McCranie J R 1984. Crotalus vegrandis Klauber. Uracoan rattlesnake. Catalogue of American Amphibians and Reptiles ( 350: 1-2 - get paper here
- Pérez-Iglesias, Juan Manuel; Jofré, Laura E.; Rueda, Marta Patricia 2017. Primeros registros de la herpetofauna en dos areas naturales protegidas de la provincia de Santiago del Estero (Argentina). Cuad. herpetol. 32 (1): 49-57 - get paper here
- Peters, James A.; Donoso-Barros, Roberto & Orejas-Miranda, Braulio 1970. Catalogue of the Neotropical Squamata: Part I Snakes. Bull. US Natl. Mus. 297: 347 pp. - get paper here
- Quijada-Mascareñas & Wüster, W. 2006. Crotalus durissus complex: from Yucatan to Patagonia: the natural history of the Neotropical rattlesnake. Reptilia (GB) (49): 66-73 - get paper here
- REYES VELASCO, JACOBO; CHRISTIAN L. COX, JASON MICHAEL JONES, MIGUEL BORJA & JONATHAN A. CAMPBELL. 2022. How many species of rattlesnakes are there in the Crotalus durissus species group (Serpentes: Crotalidae)? Revista Latinoamericana de Herpetología 5(1): 43–55. - get paper here
- Reyes-Velasco J., Cox C. L., Jones J. M., Borja M. & Campbell J. A. 2022. How many species of rattlesnakes are there in the Crotalus durissus species group (Serpentes: Crotalidae)? Revista Latinoamericana de Herpetología 5 (1): 43-55 - get paper here
- RIVAS, GILSON A.; CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BAR- RIO-AMORÓS & PHILIPPE J. R. KOK 2012. Reptiles of Venezuela: an updated and commented checklist. Zootaxa 3211: 1–64 - get paper here
- Strimple, Pete 1993. Crotalus vegrandis Klauber (Uracoan rattlesnake). Litteratura Serpentium 13 (2): 51-55 - get paper here
- Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
- Welch, K. R. G. 1994. Snakes of the World. A Checklist. I. Venomous snakes. KCM Books, Somerset, England.
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