Dendrelaphis andamanensis (ANDERSON, 1871)
Can you confirm these amateur observations of Dendrelaphis andamanensis?
|Higher Taxa||Colubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Andaman Bronze-back|
|Synonym||Dendrophis picta var. andamanensis ANDERSON 1871: 184|
Dendrophis boiga andamanensis — STEJNEGER 1933
Ahaetulla ahaetulla andamanensis — SMITH 1943:244.
Dendrelaphis andamanensis — VOGEL & VAN ROOIJEN 2011
Dendrelaphis andamanensis — WALLACH et al. 2014: 215
|Distribution||India (Andaman Islands)|
Type Locality: ‘‘Andamans’’
|Types||Holotype: ZSIC 7714 (Das et al., 1998).|
|Diagnosis||Diagnosis: A species of Dendrelaphis, characterized by the combination of (1) vertebral scales strongly enlarged, larger than the dorsals of the first row; (2) 176–196 ventrals; (3) 125– 146 divided subcaudals; (4) 15 dorsal scale rows at midbody; (5) anal shield divided; (6) one loreal scale; (7) two supralabials touching the eye; (8) a short first sublabial that usually touches two infralabials (five infralabials on one side in one specimen); (9) 11–16 temporal scales; (10) two to three postoculars; (11) maximum total length 120.0 cm; (12) Rel TAIL 0.30–0.34; (13) a narrow temporal stripe that starts before the eye, covers only the lower edge of the temporal region and does not extend onto the neck; (14) the absence of a light ventrolateral stripe; (15) a bright grass-green coloration in living specimens (Fig. 5) as opposed to the brown/blue coloration in D. cyanochloris.|
|Comment||Distribution: D. andamanensis has been erroneously reported from the Great Nicobar Islands (Biswas and Sanyal, 1977) which actually originated from the Andamans (Vijayakumar and David, 2006). As a result, Das (1999) considered D. pictus var. andamanensis to be an erroneous report for Andaman’s fauna while considering D. cyanochloris to be an inhabitant of the Andamans.|
Similar species: Dendrelaphis pictus var. andamanensis has been wrongly identified as Dendrelaphis cyanochloris in the literature (e.g., Cox et al., 1998; Das, 2002; Whitaker and Captain, 2004). However, D. andamanensis cannot be confused with D. pictus because of its bright green coloration and absence of a ventrolateral line. The picture in Whitaker and Captain (2004: 177) titled Dendrelaphis pictus andamanensis is in fact Dendrelaphis humayuni, Tiwari and Biswas, 1973.