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Hardwicke's rat snake ( 英語 )

由wikipedia EN提供

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 southwestern Asia from northern India to southern Turkey, Pakistan, Afghanistan (Leviton 1959: 461), Uzbekistan, Iraq, Iran, Jordan (Disi 1993), Kuwait, Bahrain, Saudi Arabia (along the Arabian Sea) to Israel.

It has been recorded in South Asia from Chitral in the north to Almora in Kumaon, Uttarakhand state, south to the Khandesh area in Maharashtra.

Status

P. ventromaculatus is not uncommon.

Closeup of head of glossy-bellied racer

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.

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.

Size

Adults are usually 90 to 120 cm (35 to 47 in) in total length (including tail), and have been recorded to grow up to 1.28 m (4.2 ft) .

Body markings of glossy-bellied racer

Identifying characteristics

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

Subspecies

The following three subspecies are recognized as being valid, including the nominotypical subspecies.[1]

Yellow to white belly of glossy-bellied racer

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.

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.

Diet

P. ventromaculatus largely preys upon lizards.

Reproduction

P. ventromaculatus is oviparous.[1] Gravid females have been obtained in early summer. About 9 eggs are laid. They hatch around September. The young snakes are 30–33 centimetres (12–13 in) long.

Local names

A glossy-bellied racer held in the hand

References

  1. ^ a b c Species Platyceps ventromaculatus at The Reptile Database www.reptile-database.org.
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Hardwicke's rat snake: Brief Summary ( 英語 )

由wikipedia EN提供

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.

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Platyceps ventromaculatus ( 愛沙尼亞語 )

由wikipedia ET提供

Platyceps ventromaculatus on maoliik.

Klassifikatsioon

Maoliigil Platyceps ventromaculatus klassifitseeritakse roomajate andmebaasis järgmised alamliigid[1]:

Levila

Neid võib kohata Türgis, Jordaanias, Saudi Araabias, Araabia Ühendemiraatides, Bahreinis, Kuveidis, Iraagis, Afganistanis, Pakistanis ja Indiast põhja pool.


Peasoomused


 src=
Soomuste paigutus mao Platyceps ventromaculatus peas
---- Legend
---- ag – eesmine Kinnshield
flaubakilbis
insõõrmetevaheline kilbis
lsarnakilbis
laülamokakilbised
la'alamokakilbised
mlõuatsikilbis
nninakilbised
pkiirukilbised
pflaubaeesne kilbis
pg – tagumine Kinnschild
prosilmaeesne kilbis
psoScutum praesuboculare
ptosilmatagused kilbised
rnokisekilbis
sosilmaüline kilbis
t – eesmine ja tagumine oimukilbis
v – esimene kõhukilbis
----

Viited

  1. Peter Uetz & Jakob Hallermann, Platyceps ventromaculatus Roomajate andmebaas veebiversioon (vaadatud 23.03.2014) (inglise keeles)

Välislingid

Selles artiklis on kasutatud prantsuskeelset artiklit fr:Platyceps ventromaculatus seisuga 23.03.2014.

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wikipedia ET

Platyceps ventromaculatus: Brief Summary ( 愛沙尼亞語 )

由wikipedia ET提供

Platyceps ventromaculatus on maoliik.

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Platyceps ventromaculatus ( 巴斯克語 )

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(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Platyceps ventromaculatus: Brief Summary ( 巴斯克語 )

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Platyceps ventromaculatus Platyceps generoko animalia da. Narrastien barruko Colubridae familian sailkatuta dago.

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Platyceps ventromaculatus ( 法語 )

由wikipedia FR提供

Platyceps ventromaculatus est une espèce de serpents de la famille des Colubridae[1].

Répartition

Cette espèce se rencontre en Turquie, en Jordanie, en Arabie saoudite, aux Émirats arabes unis, à Bahreïn, au Koweït, en Irak, en Afghanistan, au Pakistan et dans le Nord l'Inde[1].

Liste des sous-espèces

Selon Reptarium Reptile Database (20 mars 2012)[2] :

  • Platyceps ventromaculatus bengalensis (Khan & Khan, 2000)
  • Platyceps ventromaculatus indusai (Khan & Khan, 2000)
  • Platyceps ventromaculatus ventromaculatus (Gray, 1834)

Publications originales

  • Gray, 1834 : Illustrations of Indian Zoology, chiefly selected from the collection of Major-General Hardwicke. vol. 2, p. 1-263 (texte intégral).
  • Khan & Khan, 2000 : Three new subspecies of snakes of genus Coluber from Pakistan. Pakistan Journal of Zoology, vol. 32, no 1, p. 49-52.

Notes et références

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Platyceps ventromaculatus: Brief Summary ( 法語 )

由wikipedia FR提供

Platyceps ventromaculatus est une espèce de serpents de la famille des Colubridae.

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Platyceps ventromaculatus ( 越南語 )

由wikipedia VI提供

Platyceps ventromaculatus là một loài rắn trong họ Rắn nước. Loài này được Gray mô tả khoa học đầu tiên năm 1834.[1]

Hình ảnh

Chú thích

  1. ^ Platyceps ventromaculatus. The Reptile Database. Truy cập ngày 29 tháng 5 năm 2013.

Tham khảo


Hình tượng sơ khai Bài viết liên quan phân họ rắn Colubrinae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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wikipedia VI

Platyceps ventromaculatus: Brief Summary ( 越南語 )

由wikipedia VI提供

Platyceps ventromaculatus là một loài rắn trong họ Rắn nước. Loài này được Gray mô tả khoa học đầu tiên năm 1834.

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wikipedia VI