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Xenocalamus mechowii ( الإنجليزية )

المقدمة من wikipedia EN

Xenocalamus mechowii, or the elongate quill-snouted snake, is a species of venomous rear-fanged snake in the subfamily Aparallactinae of the family Atractaspididae.[1] The species is endemic to Africa.[2]

Etymology

The specific name or epithet, mechowii, is in honor of Friedrich Wilhelm Alexander von Mechow, a Silesian-German explorer of Africa.[3]

Geographic range

X. mechowii is found in Angola, Botswana, Republic of the Congo, Democratic Republic of the Congo, Namibia, Zambia, and Zimbabwe.[2]

Habitat

The preferred habitat of X. mechowii is Kalahari sand.[4]

Description

Dorsally, X. mechowii is yellowish with brown spots, some spots arranged in alternating confluent pairs, others forming crossbands. The upper lip, sides of the body, and venter are unspotted.[5]

A subadult 22.5 cm (8+34 in) in total length has a tail 3.5 cm (1+38 in) long.[5]

The species exhibits sexual dimorphism. Adult males may attain a snout-to-vent length (SVL) of 58 cm (23 in). Females are larger, and may attain 80 cm (31 in) SVL.[4]

The dorsal scales are smooth, without apical pits, arranged in 17 rows. The ventrals number 229-239. The anal plate is divided, and the subcaudals which number 31-36 are also divided.[5]

The head scalation is the same as Xenocalamus bicolor, except there are no supraoculars and two postoculars.[5]

The snout is very depressed and very prominent.[4]

Diet

X. mechowii preys on amphisbaenians, which it finds by burrowing.[4]

Reproduction

X. mechowii is oviparous. An adult female may lay a clutch of as many as four eggs.[4]

Subspecies

Two subspecies are recognized including the nominate race.

Intergrades of these two subspecies can be found in North-Western Province, Zambia.[6]

Footnotes

  1. ^ "Xenocalamus ". Integrated Taxonomic Information System. Retrieved 8 April 2019.
  2. ^ a b c Xenocalamus mechowii at the Reptarium.cz Reptile Database. Accessed 12 May 2009.
  3. ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Xenocalamus mechowi, p. 174).
  4. ^ a b c d e Branch, Bill (2004). Field Guide to Snakes and other Reptiles of Southern Africa. Third Revised edition, Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. ISBN 0-88359-042-5. (Xenocalamus mechowii, p. 69).
  5. ^ a b c d Boulenger GA (1896). Catalogue of the Snakes in the British Museum (Natural History). Volume III., Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ), Amblycephalidæ, and Viperidæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiv + 727 pp. + Plates I-XXV. ("Xenocalamus mechovii [sic]", p. 248).
  6. ^ Broadley DG (1971). "A revision of the African snake genera Amblyodipsas and Xenocalamus ". Occ. Pap. Natl. Mus. Rhodesia B4 (33): 629-697.

References

  • Peters WCH (1881). "Zwei neue von Herrn Major von Mechow während seiner letzten Expedition nach West-Afrika entdeckte Schlangen und eine Übersicht der von ihn mitgebrachten herpetologischen Sammlung ". Sitzunsber. Ges. naturf. Freunde Berlin 1881 (9): 147-150. (Xenocalamus mechowii, new species, p. 147). (in German).
  • de Witte GF, Laurent RF (1947). "Revision d'un groupe de Colubridae africains: genres Calamelaps, Miodon, Aparallactus, et formes affines ". Mém. Mus. Roy. Hist. Nat. Belgique (sér. 2) 29: 1-134. (Xenocalamus mechowii inornatus, new subspecies, p. 51). (in French).

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Xenocalamus mechowii: Brief Summary ( الإنجليزية )

المقدمة من wikipedia EN

Xenocalamus mechowii, or the elongate quill-snouted snake, is a species of venomous rear-fanged snake in the subfamily Aparallactinae of the family Atractaspididae. The species is endemic to Africa.

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Xenocalamus mechowii ( الإستونية )

المقدمة من wikipedia ET

Xenocalamus mechowii Lamprophiidae sugukonna maoliik.

Alamliigid

Maoliigil Xenocalamus mechowii klassifitseeritakse roomajate andmebaasis järgmised alamliigid:

Levik

Neid võib kohata Botswanas, Namiibias, Angolas, Zimbabwes, Sambias, Kongo Vabariigis, Kongo Demokraatlikus Vabariigis.

Viited

  1. Xenocalamus mechowii PETERS, 1881, Roomajate andmebaasi veebiversioon (vaadatud 12.05.2015)(inglise keeles)

Selles artiklis on kasutatud prantsuskeelset artiklit fr:Xenocalamus mechowii seisuga 12.05.2015.

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Xenocalamus mechowii: Brief Summary ( الإستونية )

المقدمة من wikipedia ET

Xenocalamus mechowii Lamprophiidae sugukonna maoliik.

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Xenocalamus mechowii ( الباسكية )

المقدمة من wikipedia EU
(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Xenocalamus mechowii: Brief Summary ( الباسكية )

المقدمة من wikipedia EU

Xenocalamus mechowii Xenocalamus generoko animalia da. Narrastien barruko Aparallactinae familian sailkatuta dago.

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Xenocalamus mechowii ( الفرنسية )

المقدمة من wikipedia FR

Xenocalamus mechowii est une espèce de serpents de la famille des Lamprophiidae[1].

Répartition

Cette espèce se rencontre[1] :

Description

C'est un serpent venimeux[1].

Liste des sous-espèces

Selon Reptarium Reptile Database (27 février 2014)[2] :

Étymologie

Cette espèce est nommée en l'honneur du major Alexander von Mechow (1831-1904)[3].

Publications originales

  • de Witte & Laurent, 1947 : Revision d'un groupe de Colubridae africains: genres Calamelaps, Miodon, Aparallactus, et formes affines. Mémoires Du Muséum Royal d'Histoire Naturelle de Belgique, sér. 2, vol. 29, p. 1-134.
  • Peters, 1881 : Zwei neue von Herrn Major von Mechow während seiner letzten Expedition nach West-Afrika entdeckte Schlangen und eine Übersicht der von ihm mitgebrachten herpetologischen Sammlung. Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin, vol. 1881, p. 147-150 (texte intégral).

Notes et références

  1. a b et c Reptarium Reptile Database, consulté lors d'une mise à jour du lien externe
  2. Reptarium Reptile Database, consulté le 27 février 2014
  3. Peters, 1881 : Zwei neue von Herrn Major von Mechow während seiner letzten Expedition nach West-Afrika entdeckte Schlangen und eine Übersicht der von ihm mitgebrachten herpetologischen Sammlung. Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin, vol. 1881, p. 147-150 (texte intégral).
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Xenocalamus mechowii: Brief Summary ( الفرنسية )

المقدمة من wikipedia FR

Xenocalamus mechowii est une espèce de serpents de la famille des Lamprophiidae.

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Xenocalamus mechowii ( البولندية )

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