Hebius parallelus

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Hebius parallelus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Hebius
Species:
H. parallelus
Binomial name
Hebius parallelus
(Boulenger, 1890)
Synonyms
  • Tropidonotus parallelus Boulenger, 1890
  • Natrix parallela Mell, 1931
  • Amphiesma parallela
    Malnate, 1960
  • Paranatrix parallela
    Mahendra, 1984
  • Amphiesma parallelum
    David et al., 1998 [2]

The Yunnan keelback (Hebius parallelus) is a species of natricine snake which is endemic to Asia.

Contents

Geographic range

It is found in Bhutan, China (Tibet and Yunnan), Northeast India (Arunachal Pradesh, Assam, Sikkim, Nagaland) and Myanmar. [1]

Description

Dorsally, it is brown with two parallel yellowish, black-edged stripes on the body and tail. The ventrals and subcaudals are uniform yellow, or with a black dot on each side. There is a black streak from the eye to the corner of the mouth, and the labials are yellow.

It may have one, two, or three preocular scales, and has three postoculars. There are seven or eight upper labials (usually eight), with the third, fourth, and fifth entering the eye. The temporals may be 1 + 1, 1 + 2, or 2 + 2.

Strongly keeled dorsal scales arranged in 19 rows at midbody. Ventrals 163–175; anal plate divided; subcaudals 73–95, also divided.

Adults may attain 56 cm (22 inches) in total length with a tail of 14 cm (5½ inches). [3]

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References

  1. 1 2 China Snakes Working Group. (2021). "Hebius parallelum". IUCN Red List of Threatened Species . 2021: e.T192019A2028839. doi: 10.2305/IUCN.UK.2021-3.RLTS.T192019A2028839.en . Retrieved 3 November 2022.
  2. The Reptile Database. www.reptile-database.org.
  3. Boulenger, G.A. 1893. Catalogue of the Snakes in the British Museum (Natural History), Volume I., Containing the Families...Colubridæ Aglyphæ. Trustees of the British Museum (Natural History). London. xiii + 448 pp. + Plates I.-XXVIII. (Tropidonotus parallelus, p. 223 & Plate XIII., fig. 2.)

Further reading