Opisthotropis andersonii (BOULENGER, 1888)
Can you confirm these amateur observations of Opisthotropis andersonii?
|Higher Taxa||Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Anderson's Mountain Keelback|
|Synonym||Calamohydrus (Homalopsinarum) Andersonii BOULENGER 1888|
Opisthotropis andersonii — BOULENGER 1891
Opisthotropis andersonii — BOULENGER 1893: 284
Opisthotropis andersoni — SMITH 1943: 333
Opisthotropis andersoni — BROWN & LEVITON 1961
Opisthotropis andersonii — LI et al. 2010
Opisthotropis andersonii — WALLACH et al. 2014: 508
|Distribution||China (Hong Kong), Vietnam|
Type locality: Hong Kong.
|Types||Type: BMNH 1901.9.14.11 possibly (not marked as type currently)|
|Diagnosis||Diagnosis: This species is characterized by the combination of (1) TL 378–462 mm in adult specimens; (2) TaL 15–20% of TL; (3) rostral concave, slightly large, RW 31–37% of HW; (4) nasal in contact with first and second supralabials; (5) loreal more than twice as long as deep; (6) loreal entering orbit or not, in contact with second to fourth or to fifth supralabials; (7) supralabials 7–8, the last one significantly smaller than the adjacent preceding one; (8) infralabials 7–10; (9) dorsal scale rows 17:17:17; (10) dorsal scales smooth on the neck, feebly keeled on the middle part of body, rather strongly keeled on posterior part of body, strongly keeled on the tail; (11) ventrals 141–174; subcaudals 43–60; (12) olive-green to olive-brown above, with distinct or barely perceptible longitudinal black stripes parallel to each other, crossing each scale; yellow beneath, with black markings in life (Wang et al. 2017: 401).|
|Comment||Opisthotropis andersonii (Boulenger, 1888) was described originally from a single juvenile specimen and was re-described based on two specimens deposited in the Natural History Museum, London (Zheng 1992).|
Habitat: aquatic, inhabiting flowing streams.
Diet: fishes, frogs, tadpoles, freshwater shrimp and earthworms.
|Etymology||The generic name comes from Greek οπισθε, opisthe, meaning “posterior, backwards”, and the noun Τροπις, tropis, the keel of a ship. The gender of the genus is feminine.|
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