Pareas geminatus DING, CHEN, SUWANNAPOOM, NGUYEN, POYARKOV & VOGEL, 2020
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Pareas geminatus
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| Higher Taxa | Pareidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Twin Slug snake Chinese: 伯仲钝头蛇 (Bó Zhòng Dùn Tóu Shé) |
| Synonym | Pareas geminatus DING, CHEN, SUWANNAPOOM, NGUYEN, POYARKOV & VOGEL 2020 Pareas hamptoni — VOGEL 2010 Pareas hamptoni — TEYNIÉ & DAVID 2010 [partim] Pareas geminatus — LIU & RAO 2021 Pareas (Eberhardtia) geminatus — POYARKOV et al. 2022 |
| Distribution | China (Yunnan), Thailand (Chiang Mai), N Laos Type locality: Jiangcheng County (21.207556° N, 94.020056°E; alt. 2,280 m elevation), Yunnan Province, China. |
| Reproduction | |
| Types | Holotype. CIB118021, Adult male, collected by Ding Li on 21 May 2006. Paratypes (n=5). Adult females, CIB118022 and CIB118023, collected from Jiangcheng County (22.603453 N, 101.882167 E; alt. 1,272 m a.s.l.), Yunnan Province, China; adult male, MNHN 0171S, collected from Houaphanh Province, Laos (no exact locality data); subadult male, ZMMU R-16695, collected from Long Tien, Xaisomboun Province, Laos; adult female, QSMI 1013, collected from Tak Province (approx. 16.425833 N, 99.000000 E; alt. 1,160 m a.s.l.), Thailand. Other specimens: AUP 00176, ZMMU R-16477, ZMMU R-16478 (from Doi Inthanon NP, Chiang Mai Province, Thailand), KIZ |
| Diagnosis | Diagnosis: Pareas geminatus sp. nov. differs from all congeners by the combination of the following morphological characters: a slender, yellow-brown, medium-sized snake (total length 566 mm); one or two anterior temporals; loreal not contacting the eye; prefrontal contacting the eye; one preocular; slightly enlarged median vertebral row; usually 7 (6–8) supralabials; 8 infralabial scales; 3–5 scale rows slightly keeled at midbody; 170–188 ventrals lacking lateral keels; 75–91 subcaudals, all divided; slightly billowing vertical dark bars on the trunk; two slight thin black postorbital stripes starting from lower and upper edges of postorbital scales; lower postorbital stripe reaching the anterior part of seventh supralabial, not continuing to the lower jaw and chin; the left and right upper postorbital stripes merge forming a black nuchal collar. |
| Comment | |
| Etymology | The specific epithet “geminatus” is a Latin adjective in nominative singular (masculine gender) derived from the Latin “geminus”, for “twin”, “double”, and is given in reference to the similarity in morphology of the new species to its sister taxon, P. hamptoni, with which it was confused for a long time. |
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