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Ahaetuliinae
The Ahaetuliinae are a subfamily of the snake family Colubridae that was erected in 2016 and comprises five genera containing 63 species (''Ahaetulla'' 7 species ''Chrysopelea'' species ''Dendrelaphis'' 5 species ''Dryophiops'' speciesand '' Proahaetulla'' species that are more closely related to one another than to members of the subfamily Colubrinae. Previously placed within Colubrinae, Ahaetuliinae was strongly supported as the sister group to Colubrinae in a 2016 study by Figueroa et al. Ahaetuliine snakes are arboreal and have keeled ventral and subcaudal scales (laterally notched in some species), and enlarged posterior grooved fangs (lacking in some ''Dendrelaphis''). The name comes from the genus ''Ahaetulla'', which gets its name from the Sri Lankan Sinhalese language words ''ahaetulla/ahata gulla/as gulla'', meaning “eye plucker” or “eye picker”, because of the belief that they pluck out the eyes of humans, as first reported by the Portuguese traveler Jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ahaetulla
''Ahaetulla,'' commonly referred to as Asian vine snakes or Asian whip snakes, is a genus of colubrid snakes distributed throughout tropical Asia. They are considered by some scientists to be mildly venomous and are what is commonly termed as 'rear-fanged' or more appropriately, opisthoglyphous, meaning their enlarged teeth or fangs, intended to aid in venom delivery, are located in the back of the upper jaw, instead of in the front as they are in vipers or cobras. As colubrids, Ahaetulla do not possess a true venom gland or a sophisticated venom delivery system. The Duvernoy's gland of this genus, homologous to the venom gland of true venomous snakes, produces a secretion which, though not well studied, is considered not to be medically significant to humans. Green-colored members of this genus are often referred to as green vine snakes. They are not to be confused with the "green vine snake" ''Oxybelis fulgidus'', which convergently appears very similar but is found in Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proahaetulla
''Proahaetulla'' is a monotypic genus of snake in the family Colubridae. It contains only one species, the keeled vine snake (''P. antiqua''), which is endemic to the Western Ghats of India. Its natural habitat is montane rainforests of southern Western Ghats. The species was first discovered in 2011, when an individual was found in the Agasthyamalai Hills of Tamil Nadu and Kerala. It was initially thought to be a new species of ''Ahaetulla'', as it looked very similar to the species '' A. dispar''. However, genetic analyses found it to be deeply divergent from any member in the genus ''Ahaetulla'', so it was classified in its own genus. Both the genus and species were ultimately described in 2019. Taxonomy It is considered to be the sister taxon to the genus '' Ahetulla'', which it diverged from during the mid-Oligocene. Due to its age, ''Proahaetulla'' may be one of the oldest monotypic lineages of snakes to still persist in the Western Ghats. The study that described ''Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubridae
Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on every continent except Antarctica. Description While most colubrids are not venomous (or have venom that is not known to be harmful to humans) and are mostly harmless, a few groups, such as genus ''Boiga'', can produce medically significant injuries. In addition, the boomslang, the twig snakes, and the Asian genus ''Rhabdophis'' have caused human fatalities. Some colubrids are described as opisthoglyphous (often called "rear-fanged"), meaning they have elongated, grooved teeth located in the back of their upper jaws. It is likely that opisthoglyphous dentition evolved many times in the history of snakes and is an evolutionary precursor to the fangs of vipers and elapids, which are located in the front of the mouth. Classification In the pas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysopelea
''Chrysopelea'', more commonly known as the flying snake or gliding snake is a genus that belongs to the family Colubridae. Flying snakes are mildly venomous, though the venom is dangerous only to their small prey. Their range is in Southeast Asia (the mainland (Vietnam, Cambodia, Myanmar, and Laos), Greater and Lesser Sundas, Maluku, and the Philippines), southernmost China, India, and Sri Lanka.De Rooij, N. (1915).The reptiles of the Indo-Australian archipelago Leiden: E.J. Brill. Accessed 2009-07-14. Gliding ''Chrysopelea'' is also known by its common name "flying snake". It climbs using ridge scales along its belly, pushing against the rough bark of tree trunks, allowing it to move vertically up a tree. Upon reaching the end of a branch, the snake continues moving until its tail dangles from the end of the branch. It then makes a J-shape bend, leans forward to select the level of inclination it wishes to use to control its glide path, as well as selecting a desired landin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrelaphis
''Dendrelaphis'' is a genus of colubrid snakes, distributed from Pakistan, India and southern China to Indonesia, Timor-Leste, the Philippines, Australia, New Guinea and the Solomon Islands. There are over forty described species. Asian species are known commonly as bronzebacks, while the Australo-Papuan species are simply called treesnakes. All are non-venomous and entirely harmless to humans. Classification This list is based on the latest checklist of the snakes of the world and recent revisions and descriptions published in the scientific literature. The authors of a 2015 revision of the Australo-Papuan ''Dendrelaphis'' species recommended the synonymy of ''D. solomonis'' within ''D. calligaster'', the elevation of ''D. keiensis'' to species status, the resurrection of ''D. lineolatus'' from within ''D. calligaster'', and the resurrection of ''D. macrops'' and elevation of ''D. striolatus'' from within ''D. punctulatus''. They also confined ''D. punctulatus'' to Australi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryophiops
''Dryophiops'' is a genus of snakes of the family Colubridae.. Both species in this genus are found in Southeast Asia, with ''D. philippina'' being found in the Philippines and ''D. rubescens'' being found in mainland Southeast Asia and Indonesia. Species (whip snakes) * ''Dryophiops philippina'' Boulenger, 1896 * ''Dryophiops rubescens'' (Gray, 1835) References Dryophiops ''Dryophiops'' is a genus of snakes of the family Colubridae.. Both species in this genus are found in Southeast Asia, with ''D. philippina'' being found in the Philippines and ''D. rubescens'' being found in mainland Southeast Asia and Indonesi ... Snake genera {{Snake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubrinae
The Colubrinae are a subfamily of the family Colubridae of snakes. It includes numerous genera, and although taxonomic sources often disagree on the exact number, The Reptile Database lists 717 species in 92 genera as of September 2019. It is the second largest subfamily of colubrids, after Dipsadinae. Many of the most commonly known snakes are members of this subfamily, including rat snakes, king snakes, milk snakes, vine snakes, and indigo snakes. Colubrine snakes are distributed worldwide, with the highest diversity in North America, Asia, northern Africa, and the Middle East. There are relatively few species of colubrine snakes in Europe, South America, Australia, and southern Africa, and none in Madagascar, the Caribbean, or the Pacific Islands. Colubrine snakes are extremely morphologically and ecologically diverse. Many are terrestrial, and there are specialized fossorial (e.g. ''Tantilla'') and arboreal (e.g. ''Oxybelis'') groups, but no truly aquatic groups. Some of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinhalese Language
Sinhala ( ; , ''siṁhala'', ), sometimes called Sinhalese (), is an Indo-Aryan language primarily spoken by the Sinhalese people of Sri Lanka, who make up the largest ethnic group on the island, numbering about 16 million. Sinhala is also spoken as the first language by other ethnic groups in Sri Lanka, totalling about 2 million people as of 2001. It is written using the Sinhala script, which is a Brahmic script closely related to the Grantha script of South India. Sinhala is one of the official and national languages of Sri Lanka. Along with Pali, it played a major role in the development of Theravada Buddhist literature. The early form of the Sinhala language, is attested as early as the 3rd century BCE. The language of these inscriptions with long vowels and aspirated consonants is a Prakrit similar to Magadhi, a regional associate of the Middle Indian Prakrits that has been used during the time of the Buddha. The closest relatives are the Vedda language (an endangered, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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