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Eryx conicus

Eryx conicus, also known as Russell's boa, the rough-scaled sand boa or the rough-tailed sand boa, is a species of non-venomous snake in the subfamily Erycinae of the family Boidae. The species is native to Southern Asia. No subspecies are recognised.[4]

Eryx conicus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Boidae
Genus: Eryx
Species:
E. conicus
Binomial name
Eryx conicus
(Schneider, 1801)
Synonyms[2]
  • [Boa] Conica
    Schneider, 1801
  • Boa Viperina
    Shaw, 1802
  • Boa ornata
    Daudin, 1803
  • Erix Bengalensis
    Guérin, 1830
  • [Tortrix] eryx bengalensis
    Schlegel, 1837
  • Gongylophis conicus
    Wagler, 1842
  • Eryx conicus
    A.M.C. Duméril & Bibron, 1844
  • Eryx conicus var. laevis
    W. Peters, 1869
  • Gongylophis conicus
    Boulenger, 1890
  • Eryx conicus
    — Boulenger, 1893
  • Eryx conicus brevis
    Deraniyagala, 1951
  • Eryx conicus conicus
    — Rajendran, 1967
  • Eryx conicus gansi
    Rajendran, 1971
  • Gongylophis (Gongylophis) conicus
    — Tokar, 1989
  • [Eryx] conicus
    Kluge, 1993
  • E[ryx]. conicus
    — Szyndlar & Schleich, 1994
  • Gongylophis [(Gongylophis)] conicus
    — Tokar, 1995
Common names: Russell's boa, rough-scaled sand boa,[3] rough-tailed sand boa.

Description

 
E. conicus

Adults of G. conicus may attain a total length of 3 feet 3 inches (99 cm), which includes a tail 3 inches (76 mm) long.

The anterior maxillary and mandibular teeth are longer than the posterior. The head is covered with small scales. The eye is small with a vertical pupil. The dorsal scales are small and keeled. The tail is pointed, not or but very slightly prehensile.[5]

The rostral scale is twice as broad as long, slightly prominent, without an angular horizontal edge. The top of the head is covered with small obtusely keeled scales, except for the nasals and internasals which are enlarged. Interorbitals: 8 to 10. Circumorbitals: 10 to 15. The eye is separated from the labials by one or two rows of scales. Supralabial scales: 12 to 14. Dorsal scales tubercularly keeled, in 40 to 49 rows. Ventral scales: 162-186. The anal scale is single. Subcaudals: 17-24.[5]

The anterior dorsal scales are only feebly keeled, but these keels increase in size posteriorly to the point that they become so heavily keeled that it can make a squirming specimen really painful to handle. This also makes it look as if the front and rear ends belong to markedly different animals.[6]

Dorsally, the color pattern consists of a broad zigzag band or a series of dark brown blotches on a yellowish or brownish grey ground color. The belly is uniform white.[5]

In India it can be mistaken at first glance for either the Indian python (Python molurus) or the deadly Russell's viper (Daboia russelii).

Behavior

E. conicus is active at dusk and at night.[7]

Diet

E. conicus preys upon birds and small mammals, which it kills by constricting.[7]

Geographic range

E. conicus is found in India south of about 30°N latitude, Nepal, Bangladesh and in the northern arid region of Sri Lanka. The type locality given is "India orientali ".[2]

Habitat

The preferred habitat of E. conicus is sandy tracts of central and southern India, the Punjab, Kachchh, and Sind.[citation needed]

Mimicry

The rough-scaled sand boa's color pattern frequently resembles that of the highly venomous Russell's viper, which some herpetologists believe is a case of Batesian mimicry.[8]

Reproduction

E. conicus is viviparous.[9]

References

  1. ^ Srinivasulu, C.; Vyas, R.; Bhattarai, S.; Thakur, S.; Narayanan, S.; Suraj, M.; Molur, S.; Ukuwela, K.; Wickramasinghe, L.J.M. (2021). "Eryx conicus". IUCN Red List of Threatened Species. 2021: e.T13264817A1362030. doi:10.2305/IUCN.UK.2021-2.RLTS.T13264817A1362030.en. Retrieved 8 March 2022.
  2. ^ a b McDiarmid RW, Campbell JA, Touré T (1999). Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
  3. ^ Mehrtens JM (1987). Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp. ISBN 0-8069-6460-X.
  4. ^ "Eryx conicus ". Integrated Taxonomic Information System. Retrieved 8 July 2008.
  5. ^ a b c Boulenger GA (1893). Catalogue of the Snakes in the British Museum (Natural History). Volume I., Containing the Families ... Boidæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiii + 448 pp. + Plates-XXVIII. (Eryx conicus, pp. 122-124).
  6. ^ Ditmars RL (1933). Reptiles of the World. Revised Edition. New York: The MacMillan Company. 329 pp. 89 plates.
  7. ^ a b Das (2002).
  8. ^ Mallow, David; Ludwig, David; Nilson, Göran (2003). True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Co. p. 359. ISBN 0-89464-877-2.
  9. ^ Species Eryx conicus at The Reptile Database. Accessed 3 June 2019.

Further reading

  • Boulenger GA (1890). The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. London: Secretary of State for India in Council. (Taylor and Francis, printers). xviii + 541 pp. (Gongylophis conicus, p. 247, Figure 75).
  • Das I (2002). A Photographic Guide to Snakes and other Reptiles of India. Sanibel Island, Florida: Ralph Curtis Books. 144 pp. ISBN 0-88359-056-5. (Eryx conicus, p. 13).
  • Gray JE (1849). Catalogue of the Specimens of Snakes in the Collection of the British Museum. London: Trustees of the British Museum. (Edward Newman, printer). xv + 125 pp. (Gongylophis conica [sic], p. 108).
  • Günther ACLG (1864). The Reptiles of British India. London: The Ray Society. (Taylor and Francis, printers). xxvii + 452 pp. + Plates I-XXVI. (Gongylophis conicus, p. 333).
  • Jones C (2004). "Sandboas". Reptilia 9 (3): 20-30.
  • Schneider JG (1801). Historiae Amphibiorum naturalis et literariae Fasciculus Secundus continens Crocodilos, Scincos, Chamaesauras, Boas, Pseudoboas, Elapes, Angues, Amphisbaenas et Caecilias. Jena: F. Frommann. vi + 374 pp. + Plates I-II. (Boa conica, new species, p. 268). (in Latin).
  • Smith MA (1943). The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-region. Reptilia and Amphibia. Vol. III.—Serpentes. London: Secretary of State for India. (Taylor and Francis, printers). xii + 583 pp. (Eryx conicus, pp. 112–113).
  • Tokar AA (1995). "Taxonomic revision of the genus Gongylophis Wagler 1830: G. conicus (Schneider 1801) and G. muelleri Boulenger 1892 (Serpentes Boidae)". Tropical Zoology 8 (2): 347-360.
  • Whitaker R, Captain A (2004). Snakes of India: The Field Guide. Chennai: Draco Books. 495 pp. ISBN 978-81-901873-0-5.

External links

eryx, conicus, also, known, russell, rough, scaled, sand, rough, tailed, sand, species, venomous, snake, subfamily, erycinae, family, boidae, species, native, southern, asia, subspecies, recognised, conservation, statusnear, threatened, iucn, scientific, class. Eryx conicus also known as Russell s boa the rough scaled sand boa or the rough tailed sand boa is a species of non venomous snake in the subfamily Erycinae of the family Boidae The species is native to Southern Asia No subspecies are recognised 4 Eryx conicusConservation statusNear Threatened IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ReptiliaOrder SquamataSuborder SerpentesFamily BoidaeGenus EryxSpecies E conicusBinomial nameEryx conicus Schneider 1801 Synonyms 2 Boa Conica Schneider 1801 Boa Viperina Shaw 1802 Boa ornata Daudin 1803 Erix Bengalensis Guerin 1830 Tortrix eryx bengalensis Schlegel 1837 Gongylophis conicus Wagler 1842 Eryx conicus A M C Dumeril amp Bibron 1844 Eryx conicus var laevis W Peters 1869 Gongylophis conicus Boulenger 1890 Eryx conicus Boulenger 1893 Eryx conicus brevis Deraniyagala 1951 Eryx conicus conicus Rajendran 1967 Eryx conicus gansi Rajendran 1971 Gongylophis Gongylophis conicus Tokar 1989 Eryx conicus Kluge 1993 E ryx conicus Szyndlar amp Schleich 1994 Gongylophis Gongylophis conicus Tokar 1995Common names Russell s boa rough scaled sand boa 3 rough tailed sand boa Contents 1 Description 2 Behavior 3 Diet 4 Geographic range 5 Habitat 6 Mimicry 7 Reproduction 8 References 9 Further reading 10 External linksDescription Edit E conicusAdults of G conicus may attain a total length of 3 feet 3 inches 99 cm which includes a tail 3 inches 76 mm long The anterior maxillary and mandibular teeth are longer than the posterior The head is covered with small scales The eye is small with a vertical pupil The dorsal scales are small and keeled The tail is pointed not or but very slightly prehensile 5 The rostral scale is twice as broad as long slightly prominent without an angular horizontal edge The top of the head is covered with small obtusely keeled scales except for the nasals and internasals which are enlarged Interorbitals 8 to 10 Circumorbitals 10 to 15 The eye is separated from the labials by one or two rows of scales Supralabial scales 12 to 14 Dorsal scales tubercularly keeled in 40 to 49 rows Ventral scales 162 186 The anal scale is single Subcaudals 17 24 5 The anterior dorsal scales are only feebly keeled but these keels increase in size posteriorly to the point that they become so heavily keeled that it can make a squirming specimen really painful to handle This also makes it look as if the front and rear ends belong to markedly different animals 6 Dorsally the color pattern consists of a broad zigzag band or a series of dark brown blotches on a yellowish or brownish grey ground color The belly is uniform white 5 In India it can be mistaken at first glance for either the Indian python Python molurus or the deadly Russell s viper Daboia russelii Behavior EditE conicus is active at dusk and at night 7 Diet EditE conicus preys upon birds and small mammals which it kills by constricting 7 Geographic range EditE conicus is found in India south of about 30 N latitude Nepal Bangladesh and in the northern arid region of Sri Lanka The type locality given is India orientali 2 Habitat EditThe preferred habitat of E conicus is sandy tracts of central and southern India the Punjab Kachchh and Sind citation needed Mimicry EditThe rough scaled sand boa s color pattern frequently resembles that of the highly venomous Russell s viper which some herpetologists believe is a case of Batesian mimicry 8 Reproduction EditE conicus is viviparous 9 References Edit Srinivasulu C Vyas R Bhattarai S Thakur S Narayanan S Suraj M Molur S Ukuwela K Wickramasinghe L J M 2021 Eryx conicus IUCN Red List of Threatened Species 2021 e T13264817A1362030 doi 10 2305 IUCN UK 2021 2 RLTS T13264817A1362030 en Retrieved 8 March 2022 a b McDiarmid RW Campbell JA Toure T 1999 Snake Species of the World A Taxonomic and Geographic Reference Volume 1 Washington District of Columbia Herpetologists League 511 pp ISBN 1 893777 00 6 series ISBN 1 893777 01 4 volume Mehrtens JM 1987 Living Snakes of the World in Color New York Sterling Publishers 480 pp ISBN 0 8069 6460 X Eryx conicus Integrated Taxonomic Information System Retrieved 8 July 2008 a b c Boulenger GA 1893 Catalogue of the Snakes in the British Museum Natural History Volume I Containing the Families Boidae London Trustees of the British Museum Natural History Taylor and Francis printers xiii 448 pp Plates XXVIII Eryx conicus pp 122 124 Ditmars RL 1933 Reptiles of the World Revised Edition New York The MacMillan Company 329 pp 89 plates a b Das 2002 Mallow David Ludwig David Nilson Goran 2003 True Vipers Natural History and Toxinology of Old World Vipers Malabar Florida Krieger Publishing Co p 359 ISBN 0 89464 877 2 Species Eryx conicus at The Reptile Database Accessed 3 June 2019 Further reading EditBoulenger GA 1890 The Fauna of British India Including Ceylon and Burma Reptilia and Batrachia London Secretary of State for India in Council Taylor and Francis printers xviii 541 pp Gongylophis conicus p 247 Figure 75 Das I 2002 A Photographic Guide to Snakes and other Reptiles of India Sanibel Island Florida Ralph Curtis Books 144 pp ISBN 0 88359 056 5 Eryx conicus p 13 Gray JE 1849 Catalogue of the Specimens of Snakes in the Collection of the British Museum London Trustees of the British Museum Edward Newman printer xv 125 pp Gongylophis conica sic p 108 Gunther ACLG 1864 The Reptiles of British India London The Ray Society Taylor and Francis printers xxvii 452 pp Plates I XXVI Gongylophis conicus p 333 Jones C 2004 Sandboas Reptilia 9 3 20 30 Schneider JG 1801 Historiae Amphibiorum naturalis et literariae Fasciculus Secundus continens Crocodilos Scincos Chamaesauras Boas Pseudoboas Elapes Angues Amphisbaenas et Caecilias Jena F Frommann vi 374 pp Plates I II Boa conica new species p 268 in Latin Smith MA 1943 The Fauna of British India Ceylon and Burma Including the Whole of the Indo Chinese Sub region Reptilia and Amphibia Vol III Serpentes London Secretary of State for India Taylor and Francis printers xii 583 pp Eryx conicus pp 112 113 Tokar AA 1995 Taxonomic revision of the genus Gongylophis Wagler 1830 G conicus Schneider 1801 and G muelleri Boulenger 1892 Serpentes Boidae Tropical Zoology 8 2 347 360 Whitaker R Captain A 2004 Snakes of India The Field Guide Chennai Draco Books 495 pp ISBN 978 81 901873 0 5 External links Edit Wikimedia Commons has media related to Gongylophis conicus Retrieved from https en wikipedia org w index php title Eryx conicus amp oldid 1143031075, wikipedia, wiki, book, books, library,

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