Eutropis dattaroyi AMARASINGHE, CHANDRAMOULI, DEUTI, CAMPBELL, HENKANATHTHEGEDARA & KARUNARATHNA, 2020
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Higher Taxa | Scincidae, Mabuyinae (Mabuyini), Scincoidea, Sauria, Squamata (lizards) |
Subspecies | |
Common Names | |
Synonym | Eutropis dattaroyi AMARASINGHE, CHANDRAMOULI, DEUTI, CAMPBELL, HENKANATHTHEGEDARA & KARUNARATHNA 2020 Mabuya rudis — BISWAS & SANYAL 1980 (part.) Mabuya rudis — BISWAS 1984 (part.) Mabuya rudis — DAS 1994 (part.) Mabuya rudis — DAS 1999 (part.) Mabuya rudis — VIJAYAKUMAR 2005 (part.) |
Distribution | India (Great Nicobar Island) Type locality: Joginder Nagar (24 km post of S.N.S. Road), South of Campbell Bay, Great Nicobar Island |
Reproduction | |
Types | Holotype. ZSI 25118, Adult male, SVL 123.1 mm, collected by Dr. K.K. Tiwari (during Andaman & Nicobar Survey – 1977) on 29 March 1977. Paratype (n=1): ZSI 23483, Adult male, SVL 99.3 mm, other details are the same as holotype. See Table 2 for morphometric and meristic characters, other morphological characters is same as holotype. |
Diagnosis | Diagnosis. E. dattaroyi sp. nov. is diagnosed by the following combination of morphological characters: moderate body size (SVL 99.3–123.1 mm); tricarinate dorsal scales; scaly lower eyelid; 52–53 paravertebrals; 65–70 ventrals; 20–21 subdigital lamellae under toe IV; 36–38 midbody scale rows; temporals smooth; scales on dorsal surface of the thigh keeled; only the supraocular II in contact with the frontal and the absence of dark lateral or longitudinal bands along the body (Table 3, Amarasinghe et al. 2020). Diagnostic characters of Eutropis macrophthalma, E. multifasciata, E. rudis, E. lewisi, and E. dattaroyi sp. nov.; are provided by Amarasinghe et al. (2020: 19, Table 3). Coloration. Dorsal head, body and limbs light uniform copper brown, limbs darker. Venter cream. Comparison. Comparisons between Eutropis dattaroyi sp. nov. and putative closely related congeners (E. lewisi, E. macrophthalma, E. multifasciata, E. rudis) are presented in Table 2. Unlike the new species, which is tricarinate, E. dissimilis (Hallowell, 1857) has bicarinate dorsal scales; E. quadricarinata (Boulenger, 1887) has quadricarinate dorsal scales; E. andamanensis (Smith, 1935), E. carinata (Schneider, 1801), E. gansi (Das, 1991), E. madaraszi (Méhely, 1897), E. multicarinata (Gray, 1845), E. rugifera (Stoliczka, 1870), and E. trivittata (Hardwicke & Gray, 1827) have quinquecarinate dorsal scales; E. macularia (Blyth, 1853) and E. tammanna Das, de Silva & Austin, 2008 have six dorsal scale keels. Eutropis beddomii (Jerdon, 1870) has 12–16 lamellae under the fourth toe, E. floweri (Taylor, 1950) has 15–16 lamellae, E. tytleri (Theobald, 1868) has 28 lamellae, E. ashwamedhi (Sharma, 1969) has 13–15 lamellae (vs 20 or 21 in E. dattaroyi sp. nov.). Eutropis bibronii (Gray, 1839), E. innotata (Blanford, 1870), E. nagarjunensis (Sharma, 1969), and E. quadratilobus (Bauer & Günther, 1992) have a transparent lower eyelid disc (vs scaly in E. dattaroyi sp. nov.). Eutropis clivicola (Inger, Shaffer, Koshy et al., 1984) has 46 ventrals (vs 65–70 in E. dattaroyi sp. nov.). E. allapallensis (Schmidt, 1926) has a single frontoparietal (vs 2 in E. dattaroyi sp. nov.). E. longicaudata (Hallowell, 1857) has 26–30 midbody scale rows (vs 36–38 midbody scale rows in E. dattaroyi sp. nov.). E. austini Batuwita, 2016 and E. greeri Batuwita, 2016 have 31–39 paravertebral scales (vs 52–53 in E. dattaroyi sp. nov.). |
Comment | |
Etymology | The specific epithet is an eponym latinised as a noun in the genitive singular, honouring Dr. Aniruddha Datta-Roy for his remarkable contributions to the field of herpetology, especially on skinks (Reptilia: Scincidae) of the Indian subcontinent. Aniruddha Datta-Roy is an Indian herpetologist, and the sectional editor for skinks of the journal Zootaxa. |
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