Ahaetulla perroteti (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
Can you confirm these amateur observations of Ahaetulla perroteti?
|Higher Taxa||Colubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Western Ghats Bronzeback|
|Synonym||Psammophis Perroteti DUMÉRIL, BIBRON & DUMÉRIL 1854: 899|
Leptophis canarensis JERDON 1854
Dryophis tropidococcyx GÜNTHER 1858: 157
Psammophis perroteti — GÜNTHER 1860: 428
Tropidococcyx perroteti — THEOBALD 1868
Dryophis perroteti — BOULENGER 1890: 868
Dryophis perroteti — SMITH 1943: 373
Ahaetulla perroteti — SVAGE 1952
Ahaetulla perroteti — DAS 1996: 53
Ahaetulla perroteti — WALLACH et al. 2014: 20
Ahaetulla perroteti — MALLIK et al. 2020: 45
|Distribution||India (Western Ghats, Kerala, Tamil Nadu ?), elelvation 1980 m to 2300 m|
Type locality: “Indes-Orientales” [= East Indies, including India].
|Types||Syntypes: MNHN-RA 1208, longest syntype 500 mm (G.S. Perrotet, 1822–1832), 5 specimens, location of other syntypes unknown.|
Holotype: BMNH 1922.214.171.124-81 [tropidococcyx]
|Diagnosis||Diagnosis: It is morphologically separated from most other Indian species by the absence of rostral appendage (vs. present in all Indian congeners except A. dispar, A. travancorica sp. nov.). It differes from the latter species by a lower number (65–86) of subcaudal shields (vs. 103–125 in A. dispar and 130 in Ahaetulla travancorica sp. nov.) and complete absence of loreal scales on either side of the head (vs. 0–1 loreals in A. dispar and 2 in Ahaetulla travancorica sp. nov.) (Fig. 24, Mallik et al. 2020).|
Colouration in life. Dorsum bright to darker shades of green (in males) to dark brown to olive (in females); supralabials light green to bronzed, distinct and separated by a weak pre-ocular stripe that extends till the end of the jaw angle; body darker than the head; venter with light green to dirty white central strip bordered with lighter stripes ventrolaterally; eyes golden with numerous black speckles that are highest in concentration towards the ends of the pupil, pupil distinct from the rest of the eye with a light yellow halo around the pupil (also see Ganesh & Chandramouli 2011, Mallik et al. 2020).
Variations (also see Wall 1919; Smith 1943; Whitaker & Captain 2004; Ganesh & Chandramouli 2011). Ventrals 140–149 notched with weak keels (136–146 in Smith 1943); subcaudals 70–84 divided (65–86 in Smith 1943, Mallik et al. 2020).
|Comment||Mildly venomous but usually harmless for humans.|
Synonymy: partly after Mallik et al. 2020.
Distribution: Reports from Myanmar are probably erroneous (MCDOWELL & JENNER 1988). See map in Mallik et al. 2020: 14 (Fig. 4).
Habitat: In contrast to most other members of the genus, A. perroteti is predominantly terrestrial to semi-arboreal, inhabiting the montane grasslands and the shola forest mosaic of the Upper Nilgiris (Mallik et al. 2020).
|Etymology||Named after George Samuel Perrottet (1790–1870) a French botanist, who also worked on the natural history of Indian biota.|