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词条 Polemon (genus)
释义

  1. Common name

  2. Description

  3. Species

  4. See also

  5. References

  6. Further reading

{{DISPLAYTITLE:Polemon (genus)}}

"Miodon" redirects here. The mollusc genus of family Carditidae invalidly described by Carpenter in 1863 has been renamed Miodontiscus.

{{Automatic Taxobox
| name = Polemon
| taxon = Polemon
| authority = Jan, 1858
| synonyms =Miodon A.H.A. Duméril, 1859
}}Polemon is a genus of rear-fanged venomous snakes in the family Atractaspididae. The genus is endemic to Africa. Fifteen species are recognized as being valid.[1][2]

Common name

The common name of this genus is snake-eaters, for their habit of feeding mainly on smaller snakes.

Description

In the genus Polemon the maxillary is very short, with three small teeth, followed, after an interspace, by a very large, grooved fang situated anterior to the eye. The third and fourth mandibular teeth are large and fang-like. The head is small, and not distinct from neck. The eyes are minute, with round pupils. The nostrils are in a divided nasal which does not touch the rostral, the internasal forms a suture with the first upper labial. No loreal is present. The parietal is narrowly in contact with an upper labial.

The body is cylindrical, with a very short tail. Dorsal scales are smooth, without apical pits, and are arranged in 15 rows. The ventrals are rounded; the subcaudals are single (entire),[2] or double (divided).

Species

Genus Polemon -- 13 species
Species[1]Taxon author[1]Subspecies*[1]Common name[3]Geographic range[3]
P. acanthias[4](J.T. Reinhardt, 1860)————Reinhardt's snake-eaterGuinea, Liberia, Ivory Coast, Ghana, Togo, Sierra Leone.
P. aterPortillo, Branch, Tilbury, Nagy, Hughes, Kusamba, Muninga, Aristote, Behangana & Greenbaum, 2019————Black Snake-eaterCentral Africa, East Africa.
P. barthiiJan, 1858————Guinea snake-eaterGuinea, Ivory Coast, Cameroon.
P. bocourtiMocquard, 1897————Bocourt's snake-eaterCameroon, Rio Muni, Gabon, Democratic Republic of the Congo (Zaire).
P. christyi(Boulenger, 1903)————eastern snake-eaterDem. Rep. Congo, Malawi, Uganda, Tanzania, Zambia.
P. collaris(W. Peters, 1881)brevior
longior
collared snake-eaterAngola, Cameroon, Democratic Republic of the Congo, Gabon, Equatorial Guinea, Rwanda, Burundi, Uganda, Nigeria, Central African Republic.
P. fulvicollis(Mocquard, 1887)gracilis
graueri
laurenti
African snake-eaterGabon, Democratic Republic of the Congo (Zaire), Congo, Uganda.
P. gabonensis(A.H.A. Duméril, 1856)schmidtiGaboon snake-eaterDemocratic Republic of the Congo (Zaire), Cameroon, Nigeria, Benin, Togo, Central African Republic.
P. gracilis(Boulenger, 1911)————graceful snake-eaterSouth Cameroon.
P. graueri(Sternfeld, 1908)————Grauer’s snake-eaterUganda, eastern Zaire.
P. griseiceps(Laurent, 1947)————Cameroon snake-eaterCameroon, Central African Republic, Congo.
P. leopoldi(de Witte, 1941)————Rwanda.
P. neuwiedi(Jan, 1858)————Ivory Coast snake-eaterIvory Coast, Ghana, Togo, Benin, Burkina Faso, Nigeria.
P. notatus(W. Peters, 1882)aemulansCameroon, Central African Republic, Democratic Republic of the Congo, Gabon.
P. robustus(de Witte & Laurent, 1943)————Zaire snake-eaterDemocratic Republic of the Congo (Zaire), Central African Republic.
*) Not including the nominate subspecies.

See also

  • Snakebite.

References

1. ^{{ITIS |id=700188 |taxon=Polemon |accessdate=5 September 2007}}
2. ^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. (Genus Polemon, p. 253).
3. ^{{NRDB genus|genus=Polemon|date=5 May|year=2009}}
4. ^{{cite web |url=http://novataxa.blogspot.com/2019/01/polemon-ater.html|title=A Cryptic New Species of Polemon (Squamata: Lamprophiidae, Aparallactinae) from the Miombo Woodlands of Central and East Africa|publisher=Novataxa |accessdate=11 February 2019}}

Further reading

  • Jan [G] (1858). "Plan d'une Iconographie descriptive des Ophidiens et description sommaire de nouvelles espèces de Serpents ". Revue et Magasin de Zoologie Pure et Appliquée, Paris, 2e Série 10: 438-449, 514-527. (Polemon, new genus, p. 520). (in French).
{{Taxonbar|from=Q1006800}}{{DEFAULTSORT:Polemon (Genus)}}

3 : Lamprophiidae|Snake genera|Taxa named by Giorgio Jan

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