Coluber fasciolatusShaw, 1802 (todayArgyrogena fasciolataauctt.) is the name used for a widespread terrestrial colubrid snake species inhabiting subtropical and tropical dry deciduous/thorn forests of South Asia from Pakistan to India, with unconfirmed records of distribution in Nepal, Bangladesh and Myanmar and a single doubtful record from the northern tip of Sri Lanka.During the past 200 years,A. fasciolata(common name Banded racer) has been placed in different genera, i.e.TyriaFitzinger, 1826,ZamenisWagler, 1830,CoryphodonDuméril, Bibron and Duméril, 1854, andColuberLinnaeus, 1758 where it primarly remained until the mid 1960s and exceptionally until the year 2011. Three subsequently introduced names, viz.Coluber hebeDaudin, 1803,Coluber curvirostrisCantor, 1839, andArgyrogena rostrataWerner, 1924 were synonymized withC. fasciolatusshortly after its description.Based on a combination of characters including body pattern, external morphology and osteological differences Wilson (1967) reviewed the taxonfasciolatusShaw and considered it as generically distinguishable, removed it from the then heterogeneous and undefined collective genusColuberand assigned it to the resurrected genusArgyrogenaWerner, 1924.Shaw’s (1802) description ofC. fasciolatuswas based exclusively on the information of Russell’s “Nooni Paragoodoo” published in 1796 in his “Account of Indian Serpents, collected on the coast of Coromandel; […]”. Our analysis of the original data and the depicted type specimen in Russell (1796) revealed that the namefasciolatawas initially established for a species distinct from that currently known as the “Banded racer”, and that Russell’s data have been used simultaneously but unwittingly, for more than 150 years, as original source for two valid species from two different genera.Specimens of Banded racer found in the southeastern part of peninsular India are morphologically and genetically distinct from populations of the rest of the distribution area. These populations from central and southern Tamil Nadu state represent a different species, consequently described as a new species herein. Furthermore, examination of specimens of the Banded racer from different populations across its entire range, including the type specimen of the genusArgyrogena(A. rostrataWerner), reveals a similarity in morphology with the genusPlatycepsBlyth, 1860. This was further supported by molecular data which demonstrates that the genusArgyrogenais nested withinPlatyceps.
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