Xenotyphlops

Xenotyphlops
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Infraorder: Scolecophidia
Family: Xenotyphlopidae
Genus: Xenotyphlops
Wallach & Ineich, 1996
Species

Two species, see text.

Xenotyphlops is a genus of snakes, the only genus of the family Xenotyphlopidae, comprising two species. They are found in Madagascar.[1]

Physical characteristics

Members of the genus Xenotyphlops are distinguishable externally from the Typhlopidae by possessing a greatly enlarged and nearly circular rostral shield. This shield is nearly vertical in a lateral aspect, as a result the two species have a "bull-dozer" appearance. Xenotyphlops species are internally unique in that (1) they lack a tracheal lung and (2) possess an unexpanded tracheal membrane.[2]

Geographic range

Snakes of the genus Xenotyphlops are endemic to the island of Madagascar. For over 100 years the genus was known only from the type locality, which was "Madagascar", and only from the type specimens.[3]

Species

Etymology

The specific name, grandidieri, is in honor of French naturalist Alfred Grandidier.[4]

The specific name, mocquardi, is in honor of French herpetologist François Mocquard.[4]

Taxonomy

In 2013, after examining several newly collected specimens, Wegener et al. concluded that X. mocquardi falls within the range of variation of X. grandidieri, and they proposed that X. mocquardi be considered a synonym of X. grandidieri. This change would make Xenotyphlops a monotypic genus in a monotypic family.[5]

See also

References

  1. "Xenotyphlops". Integrated Taxonomic Information System. Retrieved 29 August 2007.
  2. "Xenotyphlops grandidieri ". Reptile-database.reptarium.cz Retrieved 1 December 2013.
  3. McDiarmid RW, Campbell JA, Touré TA. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists’ League. 511 pp.
  4. 1 2 Beolens B, Watkins M, Grayson M. 2011. The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Xenotyphlops grandidieri, pp. 105-106; X. mocquardi, p. 181).
  5. Wegener JE, Swoboda S, Hawlitschek O, Franzen M, Wallach V, Vences M, Nagy ZT, Hedges SB, Köhler J, Glaw F. 2013. "Morphological variation and taxonomic reassessment of the endemic Malagasy blind snake family Xenotyphlopidae (Serpentes, Scolecophidia)". Spixiana 36 (2): 269-282.

Further reading

External links

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