Abstract
Two new species of the uropeltid snake genus Rhinophis Hemprich, 1820 are described from Sri Lanka. Rhinophis martin sp. nov. is described from 11 type specimens from the Rakwana Massif, and another 22 specimens from the same region are referred to this new species. Rhinophis dinarzardae sp. nov. is described from eight type specimens from the Knuckles Massif, and another 64 specimens from the Knuckles and adjacent hills are referred to this new species. Rhinophis martin sp. nov. has apparently not been reported previously under any scientific name, but is distinct in scalation, colour pattern and DNA. Rhinophis dinarzardae sp. nov. has long-been confused with the superficially similar R. philippinus, from which it differs by having more ventral scales, by occurring in the northern part of the Knuckles Massif and adjacent hills to the West rather than in the Central Highlands upland region (and possibly areas to the South and West) of Sri Lanka, and in DNA sequence data. The new descriptions take the inventory of currently recognised, named uropeltid species in Sri Lanka to 20, all members of the genus Rhinophis.
References
- Aengals, R. & Ganesh, S.R. (2013) Rhinophis goweri—a new species of shieldtail snake from the Southern Eastern Ghats, India. Russian Journal of Herpetology, 20 (1), 61–65.
- Bossuyt, F., Meegaskumbura, M., Beenaerts, N., Gower, D.J., Pethiyagoda, P., Roelants, K., Mannaert, A., Wilkinson, M., Bahir, M.M., Manamendra-Arachchi, K., Ng, P.K.L., Schneider, C.J., Oommen, O.V. & Milinkovitch, M.C. (2004) Local ende- mism within the Western Ghats—Sri Lanka biodiversity hotspot. Science, 306, 479–481. https://doi.org/10.1126/science.1100167
- Cadle, J.E., Dessauer, H.C., Gans, C. & Gartside, D.F. (1990) Phylogenetic relationships and molecular evolution in uropeltid snakes (Serpentes: Uropeltidae): allozymes and albumin immunology. Biological Journal of the Linnean Society, 40 (3), 293–320. https://doi.org/10.1111/j.1095-8312.1990.tb00541.x
- Cyriac, V.P. & Kodandaramaiah, U. (2017) Paleoclimate determines diversification patterns in the fossorial snake family Uro- peltidae Cuvier, 1829. Molecular Phylogenetics and Evolution, 116, 97–107. https://doi.org/10.1016/j.ympev.2017.08.017
- Cyriac, V.P., Narayanan, S., Sampaio, F.L., Umesh, P. & Gower, D.J. (2020) A new species of Rhinophis Hemprich, 1820 (Serpentes: Uropeltidae) from the Wayanad region of peninsular India. Zootaxa, 4778 (2), 329–342. https://doi.org/10.11646/zootaxa.4778.2.5
- Dowling, H.G. (1951) A proposed method of expressing scale reductions in snakes. Copeia, 1951, 131–134. https://doi.org/10.2307/1437542
- Douglas, D.A. & Gower, D.J. (2010) Snake mitochondrial genomes phylogenetic relationships and implications of extended taxon sampling for interpretations of mitogenomic evolution. BMC Genomics, 11, 14. https://doi.org/10.1186/1471-2164-11-14
- Gans, C. & Baic, D. (1977) Regional specialization of reptilian scale surfaces: Relation of texture and biologic role. Science, 195, 1348–1350. https://doi.org/10.1126/science.195.4284.1348
- Gower, D.J. (2003) Scale microornamentation of uropeltid snakes. Journal of Morphology, 258, 249–268. https://doi.org/10.1002/jmor.10147
- Gower, D.J. (2020) A new species of Rhinophis Hemprich, 1820 (Serpentes: Uropeltidae) from southwestern Sri Lanka. Zootaxa, 4810 (3), 495–510. https://doi.org/10.11646/zootaxa.4810.3.6
- Gower, D.J. & Ablett, J.D. (2006) Counting ventral scales in Asian anilioid snakes. Herpetological Journal, 16, 259–263.
- Gower, D.J. & Maduwage, K. (2011) Two new species of Rhinophis Hemprich (Serpentes: Uropeltidae) from Sri Lanka. Zootaxa, 2881 (1), 51–68. https://doi.org/10.11646/zootaxa.2881.1.4
- Gower, D.J., Bahir, M., Mapatuna, Y., Pethiyagoda, R., Raheem, D. & Wilkinson, M. (2005) Molecular phylogenetics of Sri Lankan Ichthyophis (Amphibia: Gymnophiona: Ichthyophiidae), with discovery of a cryptic species. The Raffles Bulletin of Zoology, Supplement Series, 12, 153–161.
- Huntley, L.C., Gower, D.J., Sampaio, F.L., Collins, E.S., Goswami, A. & Fabre, A.-C. (2021) Intraspecific morphological variation in the shieldtail snake Rhinophis philippinus (Serpentes: Uropeltidae), with particular reference to tail shield and cranial 3D geometric morphometrics. Journal of Zoological Systematics and Evolutionary Research, 59, 1357–1370. https://doi.org/10.1111/jzs.12505
- IUCN Species Survival Commission (SC) (2012) IUCN Red List categories and criteria. Version 3.1. 2ndEdition. IUCN, Gland and Cambridge, 32 pp.
- Jins, V.J., Sampaio, F.L. & Gower, D.J. (2018) A new species of Uropeltis Cuvier, 1829 (Serpentes: Uropeltidae) from the Anaikatty Hills of the Western Ghats of India. Zootaxa, 4415 (3), 401–422. https://doi.org/10.11646/zootaxa.4415.3.1
- Pyron, R.A., Kandambi, H.D., Hendry, C.R., Pushpamal, V., Burbrink, F.T. & Somaweera, R. (2013) Genus-level phylogeny of snakes reveals the origins of species richness in Sri Lanka. Molecular Phylogenetics and Evolution, 66 (3), 969–978. https://doi.org/10.1016/j.ympev.2012.12.004
- Pyron, R.A., Ganesh, S.R., Sayyed, A., Sharma, V., Wallach, V. & Somaweera, R. (2016) A catalogue and systematic overview of the shield-tailed snakes (Serpentes: Uropeltidae). Zoosystema, 38 (4), 453–506. https://doi.org/10.5252/z2016n4a2
- Sampaio, F.L., Narayanan, S., Cyriac, V.P., Venu, G. & Gower, D.J. (2020) A new Indian species of Rhinophis Hemprich, 1820 closely related to R. sanguineus Beddome, 1863 (Serpentes: Uropeltidae). Zootaxa, 4881 (1), 1–24. https://doi.org/10.11646/zootaxa.4881.1.1
- Sampaio, F.L., Day, J.J., Wickramasinghe, L.J.M., Cyriac, V.P., Papadopoulou, A., Brace, S., Rajendran, A., Simon-Nutbrown, C., Flouris, T., Kapli, P., Vidanapathirana, D.R., Kotharambath, R., Kodandaramaiah, U. & Gower, D.J. (2023) A near-complete species-level phylogeny of uropeltid snakes harnessing historical museum collections as a DNA source. Molecular Phylogenetics & Evolution, 178, 107651. https://doi.org/10.1016/j.ympev.2022.107651
- Wickramasinghe, L.J.M., Vidanapathirana, D.R., Wickramasinghe, N. & Ranwella, P.N. (2009) A new species of Rhinophis Hemprich, 1820 (Reptilia: Serpentes: Uropeltidae) from Rakwana massif, Sri Lanka. Zootaxa, 2044 (1), 1–22. https://doi.org/10.11646/zootaxa.2044.1.1
- Wickramasinghe, L.M., Vidanapathirana, D.R., Rajeev, M.G. & Gower, D.J. (2017) A new species of Rhinophis Hemprich, 1820 (Serpentes: Uropeltidae) from the central hills of Sri Lanka. Zootaxa, 4263 (1), 153–164. https://doi.org/10.11646/zootaxa.4263.1.7
- Wickramasinghe, L.M., Vidanapathirana, D.R., Wickramasinghe, N. & Gower, D.J. (2020) A new species of Rhinophis Hemprich, 1820 (Reptilia: Uropeltidae), from cloud forest of the Knuckles massif of Sri Lanka. Zootaxa, 4810 (1), 65–80. https://doi.org/10.11646/zootaxa.4810.1.3