Hardwicke's rat snake

{{Short description|Species of snake}}

{{Use dmy dates|date=December 2023}}

{{More citations needed|date=April 2022}}

{{Speciesbox

| name = Hardwicke's rat snake

| image = Platyceps_ventromaculatus.jpeg

| image_caption = Platyceps ventromaculatus, juvenile

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Behbehani, S.J.Y. |author2=Al Johany, A.M.H. |author3=Egan, D.M. |author4=Kaya, U. |author5=Nilson, G. |author6=Sevinç, M. |author7=Tok, C.V. |author8=Werner, Y.L. |author9=Srinivasulu, B. |author10=Srinivasulu, C. |author11=Disi, A.M. |author12=Crochet, P.-A. |author13=Ugurtas, I.H. |author14=Sindaco, R. |author15=Anderson, S. |author16=Kulkarni, N.U. |author17=Mohapatra, P. |author18=Das, A. |author19=Achyuthan, N.S. |author20=Thakur, S. |year=2021 |title=Platyceps ventromaculatus |volume=2021 |page=e.T164685A1067773 |doi=10.2305/IUCN.UK.2021-3.RLTS.T164685A1067773.en |access-date=30 June 2023}}

| taxon = Platyceps ventromaculatus

| authority = (Gray, 1834)

| synonyms = *Coluber ventromaculatus
{{small|Gray, 1834}}

  • Zamenis ventrimaculatus [sic]
    {{small|— Günther, 1859}}
  • Coluber ventrimaculatus
    {{small|— Corkill, 1932}}
  • Coluber ventromaculatus
    {{small|— Haas, 1957}}
  • Platyceps ventromaculatus
    {{small|— Schätti & Monsch, 2004}}
  • Argyrogena ventromaculatus
    {{small|— Sharma, 2004}}
  • Platyceps ventromaculatus
    {{small|— Nagy et al., 2004}}

| synonyms_ref = {{NRDB species|genus=Platyceps|species=ventromaculatus}}

}}

Hardwicke's rat snake (Platyceps ventromaculatus), also known commonly as the glossy-bellied racer, Gray's rat snake, and the spotted bellied snake, is a species of snake in the family Colubridae. The species is native to Asia. There are three recognized subspecies.

Geographic range

P. ventromaculatus is found in southern and southwestern Asia from northern India through Pakistan, southern Iran, and Iraq to Kuwait, Bahrain, and Saudi Arabia along the Persian Gulf. Its presence in Afghanistan, Uzbekistan, Syria, and Turkey requires confirmation.

Status

P. ventromaculatus is not uncommon.{{citation needed|date=April 2022}}

File:AB040 glossy bellied racer head.jpg

Description

P. ventromaculatus is a graceful snake with a smooth, round, elongate, gradually tapering body, and a tail more than one-fourth the total length. It has a moderately narrow head. It varies in colour and can be grey, olive-brown, olive-green, or dirty yellow. It has a series of black rhomboidal cross-bars running down the middle of the back. The scales forming the cross-bars normally have colour on the edges only. The sides of the body have similar smaller spots alternating with interspaces which may be broader or narrower than them. The belly is yellow to white with glossy scales.{{citation needed|date=April 2022}}

The head is of the body-colour with or without symmetrical darkish markings. These may consist of:

  • A blackish spot between the lores.
  • A black streak obliquely placed below the eye.
  • A black stripe from the temporal area to the gape.
  • A cross-bar and two stripes on the nape.{{citation needed|date=April 2022}}

=Size=

Adults are usually {{convert|90|to|120|cm|in|abbr=on}} in total length (including tail), and have been recorded to grow up to {{convert|1.28|m|ft|abbr=on}} .{{citation needed|date=April 2022}}

File:AB041 glossy bellied racer body.jpg

=Identifying characteristics=

  1. Dorsal scales in 19:19:15 or 13 rows.
  2. Anal divided.
  3. Supralabials (upper lip scales).
  4. The 4th, 5th and 6th touch the eye. The 4th and 9th are divided.
  5. In some rare cases, the 3rd and 8th may be divided in some case, with the 3rd, 4th and 5th touching the eye.
  6. The nostril occupies two-thirds of the suture between the nostrils.
  7. The tail is more than one-fourth the total length.{{citation needed|date=April 2022}}

Subspecies

The following three subspecies are recognized as being valid, including the nominotypical subspecies.

File:AB042 glossy bellied racer belly.JPG

Nota bene: A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Platyceps.

Habitat

P. ventromaculatus inhabits mainly stony hillsides, open or cultivated land, and sometimes congested urban areas. It has been recorded in Pokaran district in the Thar Desert also.{{citation needed|date=April 2022}}

Habits

P. ventromaculatus is a fast active snake, which gives rise to one of its common names, glossy-bellied racer. It is normally seen in open country. When alarmed, it quickly retreats into cover. It hibernates in winter. It has been known to live as long as five years.{{citation needed|date=April 2022}}

=Diet=

P. ventromaculatus largely preys upon geckos and other lizards.

Reproduction

P. ventromaculatus is oviparous. Gravid females have been obtained in early summer. About 9 eggs are laid. They hatch around September. The young snakes are {{convert|30|-|33|cm}} long.{{citation needed|date=April 2022}}

Local names

  • Arabic – Dawaid-al-khail.
  • Urdu – Sagi.{{citation needed|date=April 2022}}

File:AB043 glossy bellied racer.JPG

References

{{Reflist}}

Further reading

{{Commons}}

  • Daniel, J.C. (2002). The Book of Indian Reptiles and Amphibians. Mumbai: Bombay Natural History Society/Oxford University Press.
  • Barabanov, Andrei (2003). "Taxonomic status of Coluber ventromaculatus bengalensis Khan et Khan, 2000 (Reptilia: Squamata: Colubridae)". Russian Journal of Herpetology 9 (3): 255. [2002]
  • Gray, J.E. (1834). Illustrations of Indian Zoology, Chiefly Selected from the Collection of Major-General Hardwicke. Vol. II. London. 263 pp. + Plates 1–102. (Coluber ventromaculatus, new species, Plate 80).
  • Günther, A. (1859). "On the geographical distribution of reptiles". Annals and Magazine of Natural History, Third Series 3: 221–237. (Zamenis ventrimaculatus, new combination, p. 223).
  • Schätti, B; Wilson, L.D. (1986). "Coluber Linnaeus. Holarctic racers". Catalogue of American Amphibians and Reptiles (399) : 1–4.
  • Schätti, B.; Monsch, P. (2004). "Systematics and phylogenetic relationships of Whip snakes (Hierophis Fitzinger and Zamenis andreana Werner 1917) (Reptilia: Squamata: Colubrinae)". Revue suisse de Zoologie 111 (2): 239–256. (Platyceps ventromaculatus, new combination).
  • Smith, Malcolm A. (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. (Coluber ventromaculatus, p. 168).
  • Whitaker, Romulus (2006). Common Indian Snakes: A Field Guide. Revised edition. New Delhi: MacMillan India Ltd.

{{Taxonbar|from=Q3392025 |from2=Q5149506}}

Category:Platyceps

Category:Snakes of Asia

Category:Reptiles of the Middle East

Category:Reptiles of the Arabian Peninsula

Category:Snakes of India

Category:Reptiles of Iran

Category:Reptiles of Iraq

Category:Reptiles of Pakistan

Category:Reptiles described in 1834

Category:Taxa named by John Edward Gray

Category:Snakes of Arabia