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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Viperoidea

Familia: Viperidae
Subfamilia: Crotalinae
Genus: Trimeresurus
Species: Trimeresurus arunachalensis

Trimeresurus arunachalensis Captain et al., 2019

Type locality: India, near Ramda, West Kameng, Arunachal Pradesh, north-eastern India (27°15' N, 92°46' E, 1876 m elevation)

Holotype: SFRIV. APFGSFRI-1871. male ♂. legit Wangchu Phiang and Rohan Pandit.
Primary references

Captain, A., Deepak, V., Pandit, R., Bhatt, B. & Athreya, R. 2019. A New Species of Pitviper (Serpentes: Viperidae: Trimeresurus Lacepède, 1804) from West Kameng District, Arunachal Pradesh, India. Russian Journal of Herpetology 26(2): 111-122. Reference page.

Trimeresurus arunachalensis, the Arunachal pitviper, is a species of venomous pit viper endemic to the Indian state of Arunachal Pradesh. It is only known from the village of Ramda in the West Kameng district, where a single specimen was discovered during biodiversity surveys. It can physically be distinguished by its scalation, its acutely pointed snout reminiscent of the hump-nosed viper (Hypnale hypnale), and its brownish dorsal coloration with glossy orange-reddish-brown sides and belly. The last new species of (green) pit viper was described from India 70 years before the discovery of T. arunachalensis. Genetic analysis indicates that the closest relative of this species is the Tibetan bamboo pit viper (T. tibetanus). The single specimen known of this species makes it one of the rarest known pit vipers in the world, though further surveys of the forest habitat will likely reveal more individuals.[1][2][3]

Athreya, Ramana; Bhatt, Bharat; Pandit, Rohan; Deepak, V.; Captain, Ashok (2019-03-02). "A New Species of Pitviper (Serpentes: Viperidae: Trimeresurus Lacepède, 1804) from West Kameng District, Arunachal Pradesh, India". Russian Journal of Herpetology. 26 (2): 111–122–122. doi:10.30906/1026-2296-2019-26-2-111-122. ISSN 1026-2296.
"Meet the new species of venomous pit viper described from India". Mongabay Environmental News. 2019-05-09. Retrieved 2019-05-12.
Karmakar, Rahul (2019-05-09). "India's newest pit viper found in Arunachal Pradesh". The Hindu. ISSN 0971-751X. Retrieved 2019-05-12.


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