| Trimeresurus septentrionalis | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Viperidae |
| Genus: | Trimeresurus |
| Species: | T. septentrionalis |
| Binomial name | |
| Trimeresurus septentrionalis Kramer, 1977 | |
| Synonyms | |
Trimeresurus septentrionalis, commonly known as the Nepal pit viper or northern white-lipped pit viper, [3] is a venomous pit viper species found in Bangladesh, Bhutan, Nepal and India. [2] [4]
Total length males 610 mm, females 730 mm. [2]
The head scalation consists of 10–11(12) upper labials, the first of which are fused to the nasal. The head scales are small, subequal and feebly imbricate, smooth or weakly keeled. The supraoculars are narrow and undivided with 9–11 interocular scales between them. The temporal scales are smooth. [2]
Midbody there are 21 longitudinal dorsal scale rows. There are 162–172 ventrals in males, 160–181 in females. The subcaudals are paired and number 68–83 in males, 55–71 in females. The hemipenes are without spines. [2]
The colour pattern is green above. The belly is green, yellowish or white below. A faint ventrolateral stripe present in all males, but absent in females. The end of tail not mottled brown. [2]
Holotype: MHNG 1404.31 [2]
It is found in Bangladesh, Bhutan, Nepal and northwestern India (Simla). [2] [4] The type locality is given as "Nepal 83o 55' 28o 15' 1500 m (Nähe Pokhara)". Regenass & Kramer (1981) list the type locality as "Hyangcha (Nepal) 83o 55' E.L. 28o 15' N.B. 1500 m". Holotype: MHNG 1404.31. [1]
Elevated to a species, T. septentrionalis, by Giannasi et al. (2001). [5] Returned to a subspecies, T. a. septentrionalis, by Leviton et al. (2003). Elevated to a species in another genus, Cryptelytrops septentrionalis, by Malhotra & Thorpe (2004). Returned to genus Trimeresurus and placed in subgenus Trimeresurus (Trimeresurus) by David et al. (2011). (See synonyms.)
Trimeresurus is a genus of venomous pit vipers found in Asia from the Indian Subcontinent throughout Southeast Asia, China, and the Pacific Islands. Currently 44 species are recognized. Common names include Asian palm pit vipers, Asian lanceheads, and green pit vipers.
Ovophis monticola, commonly known as the Chinese mountain pit viper, is a venomous pitviper species found in Asia. Currently, two subspecies are recognized, including the nominate subspecies described here. Recent taxonomic work suggests that most of these should be considered as separate species. IUCN has already evaluated O. m. makazayazaya as Ovophis makazayazaya.
Protobothrops jerdonii, also known commonly as Jerdon's pitviper, the yellow-speckled pit viper, and the oriental pit viper, is a species of venomous snake in the subfamily Crotalinae of the family Viperidae. The species is native to India, Nepal, Myanmar, China, and Vietnam. Three subspecies are recognized, including the nominate subspecies described here.
Protobothrops mucrosquamatus is a venomous pit viper species endemic to Asia. Common names include: brown-spotted pit viper, Taiwanese habu and pointed-scaled pit viper. No subspecies are currently recognized. The species was first described by Theodore Cantor in 1839.
Trimeresurus albolabris, the white-lipped pit viper or white-lipped tree viper, is a venomous pit viper species endemic to Southeast Asia.
Trimeresurus erythrurus, commonly known as the red-tailed bamboo pitviper, redtail bamboo pit viper, and redtail pit viper is a venomous pit viper species found in South Asia and Myanmar. No subspecies are currently recognized.
Craspedocephalus macrolepis, commonly known as the large-scaled pit viper, is a venomous pitviper species endemic to the Southern Western Ghats of South India. No subspecies are currently recognized.
Trimeresurus popeiorum is a species of venomous pit viper in the family Viperidae. The species is native to northern and northeastern parts of India and Southeast Asia. Common names include: Pope's pit viper, Pope's green pit viper, Pope's tree viper and Pope's bamboo pitviper.
Trimeresurus purpureomaculatus is a venomous pit viper species native to India, Bangladesh and Southeast Asia. Common names include: mangrove pit viper, mangrove viper, and shore pit viper.
Trimeresursus stejnegeri is a species of venomous pit viper endemic to Asia. Two subspecies are currently recognized, including the nominate subspecies described here.
Trimeresurus andersonii is a venomous pitviper species endemic to the Andaman Islands of India. Common names include: Nicobar mangrove pit viper, Anderson's pitviper, and Andaman pit viper.
Trimeresurus flavomaculatus is a venomous pit viper species endemic to the Philippines. Two subspecies are currently recognized, including the nominate subspecies described here.
Craspedocephalus trigonocephalus, the Sri Lankan pit viper, Ceylon pit viper, Sri Lankan green pitviper or locally, pala polonga, is a venomous pit viper species endemic to Sri Lanka. No subspecies are currently recognized.
Protobothrops xiangchengensis, commonly known as the Szechwan pit viper, Kham Plateau pitviper, or Sichuan lancehead, is a venomous pit viper species endemic to the Hengduan Mountains in south-central China. No subspecies are currently recognized.
Trimeresurus malcolmi is a venomous pitviper species found in East Malaysia. Common names include: Malcolm's pitviper, Malcolm's tree viper, and Mt. Kinabalu pit viper.
Trimeresurus hageni, commonly known as the Hagen's pit viper, is a species of pit viper, a venomous snake, in the subfamily Crotalinae of the family Viperidae. The species is endemic to Southeast Asia. There are no subspecies that are recognized as being valid.
Trimeresurus gracilis, commonly known as the Taiwan pit viper or Taiwan mountain pitviper, is a venomous pit viper species endemic to Taiwan. No subspecies are currently recognized. The species is known as kikushi habu in Japanese.
Garthius chaseni, commonly known as Chasen's mountain pit viper, Chasen's tree viper, and the Kinabalu brown pit viper, is a species of venomous pitviper in the family Viperidae. The species is endemic to the island of Borneo in Malaysia. No subspecies are currently recognized. It is monotypic in the genus Garthius.
Trimeresurus mcgregori, commonly known as the McGregor's pit viper or the Batanes pit viper, is a venomous pitviper subspecies endemic to the Philippines.
Trimeresurus insularis or Indonesian pit viper, Lesser Sunda Islands pit viper, Sunda white-lipped pit viper is a venomous pit viper species found in eastern Java and the Lesser Sunda Islands, Indonesia.