Macrelaps

Macrelaps
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Atractaspididae
Genus: Macrelaps
Boulenger, 1896
Species: M. microlepidotus
Binomial name
Macrelaps microlepidotus
(Günther, 1860)
Synonyms

Macrelaps (or Natal black snake)[2] is a monotypic genus created for the rear-fanged (opisthoglyphous) venomous snake species, M. microlepidotus, endemic to South Africa. No subspecies are currently recognized.[3]

Description (diagnosis) of genus

Maxillary short, with four moderately large teeth, followed by a very large grooved fang situated below the eye. Anterior mandibular teeth enlarged, third to fifth longest. Head small, not distinct from neck. Eye minute, with round pupil. Nasal divided. No loreal. No preocular. Prefrontal entering the eye. Body cylindrical; tail short. Dorsal scales smooth, without pits, in 25 or 27 rows. Ventrals rounded; subcaudals single.[1]

Description of species

Macrelaps microlepidotus is completely black dorsally and ventrally.

It may attain 85 cm (33 1⁄2 in) in total length, with a tail 10.5 cm (4 1⁄8 in) long.

Smooth dorsal scales arranged in 25 or 27 rows. Ventrals 163-166; anal plate entire; subcaudals 37-48, also entire.

Portion of rostral visible from above nearly half as long as its distance from the frontal. Internasals shorter than the prefrontals. Frontal as long as broad, as long as its distance from the end of the snout, much shorter than the parietals. One small postocular. Temporals 1+2. Seven upper labials, third and fourth entering the eye, fifth largest. Three or four lower labials in contact with the anterior chin shield. Anterior chin shields a little longer than the posterior chin shields.[1]

See also

References

  1. 1 2 3 Boulenger, G.A. 1896. Catalogue of the Snakes in the British Museum (Natural History), Volume III. London. p. 255.
  2. 1 2 The Reptile Database. www.reptile-database.org.
  3. ↑ "Macrelaps". Integrated Taxonomic Information System. Retrieved 5 September 2007.
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