Ahaetulla borealis MALLIK, SRIKANTHAN, PAL, D’SOUZA, SHANKER & GANESH, 2020
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|Higher Taxa||Colubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Synonym||Ahaetulla borealis MALLIK, SRIKANTHAN, PAL, D’SOUZA, SHANKER & GANESH 2020: 37|
Dryophis nasutus — SHARMA 1976: 163
|Distribution||India: (Northern Western Ghats, from Devimane Ghats in Karnataka to Matheran in Maharashtra)|
Type locality: Castlerock (15.397 N, 74.342 E, 670 msl) in the Northern Western Ghats, Uttara Canara district, Karnataka.
|Types||Holotype. BNHS 3590 (CESS421); adult male; Castlerock, Karnataka; Coll. Saunak P. Pal and S.R. Chandramouli, 2012.|
Paratype. BNHS 3591 (CESS104); adult female; Matheran, Maharashtra; Coll. Ashok Kumar Mallik, 2010.
|Diagnosis||A species of Ahaetulla having a short rostral appendage (vs. long in A. oxyrhyncha comb. nov., A. anomala, A. laudankia), characterised by possessing 6 prediastemal and 8 postdiastemal maxillary teeth (vs. 7 and 9 in A. isabellina comb. nov., 6 and 11 in A. farnsworthi sp. nov., 6 and 7 in A. malabarica sp. nov. and 7 and 7 in A. oxyrhyncha comb. nov.); usually green coloured body in both sexes (vs. usually grey-brown in A. sahyadrensis nom. nov., adult females brownish in A. anomala, A. dispar and A. perroteti) (Fig. 19, Table 2, Mallik et al. 2020).|
Colour in life. Dorsum uniform olive green to light green; scales bordered with brown; rostral, infralabials, venter yellowish green to light green at mid body; yellow ventral stripe along notched ventral keels; slight discolouration in the pre-ocular; inter-scalar skin white with black and white anteriorly-converging bars, white replaced by grey skin posteriorly; eyes golden yellow with black speckles; concentration of black speckles both in the anterior and posterior ends of a horizontal pupil and a slight discolouration around the pupil; tail, subcaudals green (Mallik et al. 2020: 37).
Variations in colour morphs. Dorsum bright green with blue patches; a gradual reduction of blue patches from later, more prominent in lateral sides; scales on head sometimes with dark blue dots bordered with light blue; rostral, infralabials, venter at midbody light green to light blue; sometimes a yellow ventral stripe along notched ventral keels; inter-scalar skin white with black and white anteriorly-converging bars; eye yellow to orange with light brown marbled patterns; horizontal pupil with a light blue or yellow colouration around the pupil; tail, subcaudals green (Mallik et al. 2020: 39).
|Comment||Distribution: See map in Mallik et al. 2020: 14 (Fig. 4).|
|Etymology||Latin, adjective termed after the ‘boreal’ or northern parts of a region, referring to its distribution in the Northern Western Ghats.|
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