The specific epithetborealis derives from Latin, adjective termed after the ‘boreal’ or northern parts of a region, referring to its distribution in the Northern Western Ghats.[1]
Description
Dorsum uniform olive green to light green, scales bordered with brown. Scales on head sometimes with dark blue dots bordered with light blue. Eye yellow to orange with light brown marbled patterns; horizontal pupil with a light blue or yellow colouration around the pupil. Rostral, infralabials and venter at midbody light green to light blue. Sometimes a yellow ventral stripe along notched ventral keels. Tail and subcaudals green. Adults can reach 1 m of total length with a head very distinct from neck and relatively long and slender tail.[1]
In general, scalation are: ventrals 174–181, notched with keels; subcaudals 142–157, divided; dorsal scale rows in 15-15–13/11 rows of smooth, obliquely disposed scales; anal divided; supralabials 8–9 with 6th supralabial being the largest; 5th supralabial in contact with the eye; 4th supralabial divided; loreal absent, infralabials 8–9; pre-suboculars 1–2; pre-ocular 1 (both left and right); postoculars 2–3; sub-oculars absent; temporals 2+2 or 2+3.[1]
Geographic range
This species is one of the most widespread of Western Ghats Ahaetulla, ranging from Sirsi, Karnataka north to Matheran, Maharashtra. Near the southern edge of its range it is flanked by A. farnsworthi, from which it is likely separated by the Sharavathi River basin.[1]
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