Xenocalamus: Difference between revisions
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[[Category:Snake genera]] |
[[Category:Snake genera]] |
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[[Category:Taxa named by Albert Günther]] |
[[Category:Taxa named by Albert Günther]] |
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[[Category:Taxonomy articles created by Polbot]] |
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Revision as of 19:42, 29 March 2018
| Xenocalamus | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Atractaspididae |
| Subfamily: | Aparallactinae |
| Genus: | Xenocalamus Günther, 1868 |
- Common name: quill-snouted snakes.
Xenocalamus is a genus of rear-fanged venomous snakes endemic to Africa. Five species are recognized.[1]
Description (diagnosis) of genus
Maxillary very short, with five teeth gradually increasing in size and followed, after an interspace, by two large grooved fangs situated below the eye. Anterior mandibular teeth slightly larger than the posterior ones. Palate toothless.
Head small, not distinct from neck. Snout pointed, very prominent, very flattened. Rostral very large with obtuse horizontal edge, flat below. Eye minute, with round pupil. Nostril between two nasals, the posterior nasal very large. No loreal. Prefrontals absent (fused with the frontal). No anterior temporal.
Body cylindrical; tail very short, obtuse.
Dorsal scales smooth, without apical pits, arranged in 17 rows. Ventrals rounded; subcaudals in two rows.[2]
Species
| Genus Xenocalamus -- 5 species | ||||
| Species[1] | Taxon author[1] | Subspecies*[1] | Common name[3] | Geographic range[3] |
|---|---|---|---|---|
| X. bicolor | Günther, 1868 | australis concavorostralis lineatus machadoi maculatus pernasutus |
slender quill-snouted snake | Angola, Democratic Republic of the Congo, Namibia, Botswana, Republic of South Africa, Mozambique, Zimbabwe. |
| X. mechowii | Peters, 1881 | inornatus | elongate quill-snouted snake | Namibia, Botswana, Zimbabwe, Zambia, Angola, Democratic Republic of the Congo, Congo, |
| X. michelli | L. Müller, 1911 | ———— | Michell's quill-snouted snake | southern Democratic Republic of the Congo. |
| X. sabiensis | Broadley, 1971 | ———— | Sabi quill-snouted snake | Zimbabwe to Mozambique. |
| X. transvaalensis | Methuen, 1919 | ———— | Transvaal quill-snouted snake | North Transvaal and Zululand in Republic of South Africa, southern Mozambique, Botswana. |
*) Not including the nominate subspecies.
See also
References
- ^ a b c d "Xenocalamus". Integrated Taxonomic Information System. Retrieved 29 August 2007.
- ^ Boulenger, G.A. 1896. Catalogue of the Snakes in the British Museum (Natural History). Volume III., Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ), Amblycephalidæ, and Viperidæ. Trustees of the British Museum. London. pp. 247-248.
- ^ a b Xenocalamus at the Reptarium.cz Reptile Database. Accessed 12 May 2009.
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