Dendrelaphis thasuni ATTHANAGODA, DA SILVA, VOGEL, UDAYANGA, BANDARA, MADAWALA, GRISMER & KARUNARATHNA, 2025
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Dendrelaphis thasuni
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| Higher Taxa | Colubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Thasun’s Bronzeback |
| Synonym | Dendrelaphis thasuni ATTHANAGODA, DA SILVA, VOGEL, UDAYANGA, BANDARA, MADAWALA, GRISMER & KARUNARATHNA 2025: 35 |
| Distribution | Sri Lanka (Maragala mountain) Type locality: Maragala mountain, Monaragala District, Uva Province, Sri Lanka (6°53’26.12” N, 81°22’52.15” E, WGS1984; elevation 741 m asl |
| Reproduction | |
| Types | Holotype. An adult female (NMSL 2025.01.01), SVL 462 mm, TAL 237 mm, collected around 1600 hrs) on 25 October 2024 by Suranjan Karunarathna and Anusha Atthanagoda. |
| Diagnosis | Diagnosis: The head is distinct from the slender body; two internasals, snout broad and flat, equal to eye diameter; large eye with round pupil; one preocular and one loreal; two postoculars; 1+2 temporal scales bearing a very narrow black stripe (Figs. 4 and 5); V-shaped blackish transverse dorsolateral bars on anterior half of body; distance between transverse bars in forebody is equal to the eye diameter, with 2–3 lateral scales between two transverse dorsolateral bars; 151 enlarged vertebral scales and no vertebral stripe; dorsal scale rows one head length behind neck (~20 mm) 13, at midbody 13, one head length anterior to vent (~20 mm) 9; apical pits 1–3 on dorsal scales; 153 ventral scales, very narrow between lateral keels of both sides compared to D. caudolineolatus; anal plate undivided, large; tail long with 117 or 118 divided subcaudals; a thin blackish line between subcaudals; subcaudals with strong lateral keels. Dendrelaphis thasuni sp. nov. is most similar to D. caudolineolatus in Sri Lanka, which is its presumed closest relative. It can be easily distinguished from all species of Sri Lankan Dendrelaphis by having an undivided anal plate (Fig. 6). (Atthanagoda et al. 2025) Additional details (8967 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Known only from the (female) holotype. Similar species: D. caudolineolatus. |
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