Alsophis (antiguae) antiguae Parker, 1933

Antiguan racer



Taxonomy & Nomenclature

Synonym/s: Alsophis leucomelas Schwartz, 1966


The classification of Alsophis antiguae is disputed. If the surviving subspecies A. a. sajdaki is given species status then the whole taxa A. antiguae will be rendered extinct. Refer to (Daltry & Mayer, 2010; Hedges et al. 2009; Uetz et al.) for differing views on the matter.


Conservation Status


IUCN RedList status: Extinct



Antigua and Barbuda, the Caribbean


Biology & Ecology





BMNH 1946.1.4.46
BMNH 1946.1.4.47






Original scientific description:

Parker, H. W. (1933). Some amphibians and reptiles from the Lesser Antilles. Annals of the Magazine of Natural History 11: 151-158.


Other references:

Daltry, J. & Mayer, G. C. (2010). Alsophis antiguae. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. ( Downloaded on 29 April 2012.

Jenny C. Daltry, Quentin Bloxam, Gillian Cooper, Mark L. Day, John Hartley, McRonnie Henry, Kevel Lindsay and Brian E. Smith. (2001). Five years of conserving the 'world's rarest snake', the Antiguan racer Alsophis antigua. Oryx 35(2): 119-127.

Hedges, S. Blair, Couloux, Arnaud and Vidal, Nicolas. (2009). Molecular phylogeny, classification, and biogeography of West Indian racer snakes of the Tribe Alsophiini (Squamata, Dipsadidae, Xenodontinae). Zootaxa 2067: 1-28.

Henderson, R. W. (1990) ("1989"). A new subspecies of Alsophis antiguae (Parker) from Great Bird Island (Antigua), Lesser Antilles. Caribbean Journal of Science 25: 119-122. [description of Alsophis antiguae sajdaki]

Henderson, R.W., Powell, R., Daltry, J.C. & Day, M.L. (1996). Alsophis antiguae. Catalogue of American Amphibians and Reptiles 632: 1-3.

Lazell, J. D., Jr. (1967). Wiederentdeckung von zwei angeblich ausgestorbenen Schlangenarten der westindischen Inseln. Salamandra 3: 91-97.

Regalado, Pedro Galán. (2015). Los Anfibios y Reptiles Extinguidos: Herpetofauna Desaparecida Desde el Año 1500. Monografías de la Universidade da Coruña 155: 1-509.

Uetz, P. et al., The Reptile Database, , accessed December 11, 2010.


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