Rhinophis sanguineus

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Rhinophis sanguineus
Rhinophis microlepis.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Uropeltidae
Genus: Rhinophis
Species:
R. sanguineus
Binomial name
Rhinophis sanguineus
Beddome, 1863
Synonyms

Rhinophis sanguineus, commonly known as the salty earth snake, is a species of uropeltid snake found in the Western Ghats of India.

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

The Uropeltidae, the shieldtail or shield-tailed snakes, are a family of primitive, nonvenomous, burrowing snakes endemic to peninsular India and Sri Lanka. The name is derived from the Greek words ura ("tail") and pelte ("shield"), indicating the presence of the large keratinous shield at the tip of the tail. Seven or eight genera are recognized, depending on whether Teretrurus rhodogaster is treated in its own genus or as part of Brachyophidium. The family comprises over 50 species. These snakes are not well known in terms of their diversity, biology, and natural history.

Western Ghats mountain range running parallel to the western coast of India

Western Ghats also known as Sahyadri is a mountain range that covers an area of 140,000 km² in a stretch of 1,600 km parallel to the western coast of the Indian peninsula, traverse the States of Kerala, Tamil Nadu, Karnataka, Goa, Maharashtra and Gujarat. It is a UNESCO World Heritage Site and is one of the eight "hottest hot-spots" of biological diversity in the world. It is sometimes called the Great Escarpment of India. It is a biodiversity hotspot that contains a large proportion of the country's flora and fauna; many of which are only found in India and nowhere else in the world. According to UNESCO, Western Ghats are older than Himalayan mountains. It also influences Indian monsoon weather patterns by intercepting the rain-laden monsoon winds that sweep in from the south-west during late summer. The range runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain, called Konkan, along the Arabian Sea. A total of thirty-nine areas including national parks, wildlife sanctuaries and reserve forests were designated as world heritage sites - twenty in Kerala, ten in Karnataka, five in Tamil Nadu and four in Maharashtra.

Contents

Description

Description after Beddome (1864: 178): "Scales of the body large, in 15 rows; of the anterior portion of the trunk sometimes in 17; rostral much produced, very sharp, conical, horny, produced back, and covering the conjunction of the nasals; nostril in front of nasal shield; eye very small and obscure, [located] in front [portion] of ocular shield; four upper labials, 1st small, 2nd, 3rd, and 4th large; caudal disk nearly as long as tail, oblong, covered with excrescences, a red streak down the centre and one on each side. Colour of the body bluish black; belly bright red, with blackish mottlings; anal bifid; subcaudals of the male 9 or 10 pairs, each with 4 to 6 keels, and some of the approximated ventral plates and a few of the two lowest rows of scales also keeled; female subcaudals 6 or 7. Total length of large male 13 inches [33 cm], female 10 inches [25.5 cm]; circumference 1 inch [25 mm]; abdominals 195. The brilliant red colour of the abdomen fades in spirits."

Description of Rhinophis microlepis after Beddome (1864: 179): "Scales of the body small, in 15 rows; of the anterior portion of the trunk in 17, of the neck in 19. Caudal disk oblong, orbicular, one-half the length of the tail, covered with excrescences, which are confluent into streaks; subcaudals 10; anal bifid; head-plates as in R. sanguineus, but rostral less sharp. Colour of the body greyish black, with indistinct dull yellowish white mottlings; belly yellowish white, with dark mottlings; tail beneath yellowish, with a broad black spot. Abdominals very small, 199. Total length 6 inches [15 cm]; circumference 6½ lines [14 mm]"

Geographic range

It is found in southern India (Mysore [Koppa, Kalsa], Wynaad, Nilgiris, Travancore, Tinnevelly).

India Country in South Asia

India, also known as the Republic of India, is a country in South Asia. It is the seventh largest country by area and with more than 1.3 billion people, it is the second most populous country as well as the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives, while its Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia.

Type locality of Rhinophis sanguineus: "Cherambady [Cherambody], in the Wayanad (Malabar), elevation 3,500 feet".

Type locality of Rhinophis microlepis: "Mr. Minchin's Estate in the Wayanad (elevation 3,500 feet)". [3]

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References

  1. Boulenger, G.A. 1893. Catalogue of the Snakes in the British Museum (Natural History). Volume I., Containing the Families...Uropeltidæ... Trustees of the British Museum (Natural History). London. p. 143.
  2. The Reptile Database. www.reptile-database.org.
  3. The Reptile Database. www.reptile-database.org.

Further reading

Colonel Richard Henry Beddome was a British military officer and naturalist in India, who became chief conservator of the Madras Forest Department. In the mid-19th century, he extensively surveyed several remote and then-unexplored hill ranges in Sri Lanka and south India, including those in the Eastern Ghats such as Yelandur, Kollegal, Shevaroy Hills, Yelagiri, Nallamala Hills, Visakhapatnam hills, and the Western Ghats such as Nilgiri hills, Anaimalai hills, Agasthyamalai Hills and Kudremukh. He described many species of plants, amphibians, and reptiles from southern India and Sri Lanka, and several species from this region described by others bear his name.