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Pareas andersonii BOULENGER, 1888

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Higher TaxaPareidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Anderson’s Slug Snake
G: Andersons Schneckennatter 
SynonymPareas andersonii BOULENGER 1888: 601
Amblycephalus andersoni — WALL 1908: 783
Pareas macularius – SMITH 1943 (in part)
Amblycephalus andersoni — DEUVE 1961: 30
Pareas macularius – WOGAN et al. 2008 (in part)
Pareas macularius – WALLACH et al. 2014 (in part)
Pareas margaritophorus – BIAKZUALA & LALREMSANGA 2019
Pareas macularius – DEEPAK et al. 2020 (in part)
Pareas margaritophorus – LI et al. 2020 (in part)
Pareas andersonii — VOGEL et al. 2020
Pareas (Eberhardtia) andersonii — POYARKOV et al. 2022 
DistributionIndia (Mizoram, Nagaland), N Myanmar (= Burma), China (Yunnan)

Type locality: Bhamò and Kakhinen Hills, Burma (now Kachin State, Myanmar).  
Reproductionoviparous 
TypesLectotype: MSNG 30861, Paralectotype. MSNG 30860, designated by Capocaccia (1961).
Other material: NHMUK, CAS, MZMU (see Vogel et al. 2020). 
DiagnosisDiagnosis: Pareas andersonii differs from all other members of the genus by the combination of the following characters: slender grayish body; medium size (total length 278–481 mm); two anterior temporals, elongated; frontal scale is hexagonal with shield-shaped with the lateral sides converging posteriorly; anterior pair of chin shields are longer than broad; loreal not contacting the eye; prefrontal contacting the eye; one subocular elongate, crescent and one postocular; median vertebrals not enlarged; 7–8 infralabial scales; 15 dorsal scale rows with 5–9 rows slightly keeled at midbody; 141–162 ventrals; 35–47 subcaudals, divided; body color grey to dark grey, dorsal pattern consists of irregularly scattered black and white bicolored spots not forming cross-bands; no markings on the head, no collar; belly with rows of squarish, black blotches (Vogel et al. 2020: 558). 
CommentBehavior: nocturnal.

Synonymy: Pareas andersonii was synonymized with Pareas
margaritophorus by HUANG 2004. However, genetic data suggests it is a valid species (e.g. Zaher et al. 2019). Vogel et al. 2020 revalidated P. andersonii from the synonymy of P. margaritophorus.

Distribution: See map in Vogel et al. 2020: 554 (Fig. 1).

Habitat: partly arboreal (Harrington et al. 2018, by implication). 
EtymologyNamed in honor of John Anderson (1833–1900) for his great pioneering work on the biodiversity inventory and research of the region. 
References
  • Boulenger, GEORGE A. 1888. An account of the Reptilia obtained in Burma, north of Tenasserim, by M. L. Fea, of the Genova Civic Museum. Ann. Mus. Civ. Stor. Nat. Genova, ser. 2, 6: 593-604 - get paper here
  • DEEPAK, V.; SURYA NARAYANAN, SANDEEP DAS, K.P. RAJKUMAR, P.S. EASA, K.A. SREEJITH, DAVID J. GOWER 2020. Description of a new species of Xylophis Beddome, 1878 (Serpentes: Pareidae: Xylophiinae) from the Western Ghats, India. Zootaxa 4755 (2): 231–250 - get paper here
  • Deuve, J. 1961. Liste annotee des Serpents du Laos. Bull. Soc. Sci. Nat. Laos 1:5-32.
  • Ding, Li; Zening Chen, Chatmongkon Suwannapoom, Tan Van Nguyen, Nikolay A. Poyarkov, & Gernot Vogel 2020. A new species of the Pareas hamptoni complex (Squamata: Serpentes: Pareidae) from the Golden Triangle. TAPROBANICA 9 (2): 174–193
  • Li, J-N., Liang, D., Wang, Y-Y., Guo, P., Huang, S., Zhang, P. 2020. A Large-scale Systematic Framework of Chinese Snakes Based on a Unified Multilocus Marker System. Molecular Phylogenetics and Evolution - get paper here
  • Poyarkov NA, Nguyen TV, Pawangkhanant P, Yushchenko PV, Brakels P, Nguyen LH, Nguyen HN, Suwannapoom C, Orlov N, Vogel G. 2022. An integrative taxonomic revision of slug-eating snakes (Squamata: Pareidae: Pareineae) reveals unprecedented diversity in Indochina. PeerJ 10: e12713 - get paper here
  • Smith, M.A. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. 3 (Serpentes). Taylor and Francis, London. 583 pp.
  • Wall,F. 1908. Remarks on some recently acquired snakes. J. Bombay nat. Hist. Soc. 18: 778-784 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Wang K, Lyu ZT, Wang J, Qi S, Che J 2022. Updated Checklist and Zoogeographic Division of the Reptilian Fauna of Yunnan Province, China. Biodiversity Science 30 (4): 21326, 1–31 - get paper here
  • Wogan, Guinevere O. U.; Jens V. Vindum, Jeffery A. Wilkinson, Michelle S. Koo, Joseph B. Slowinski, Htun Win, Thin Thin, Sai Wunna Kyi, San Lwin Oo, Kyi Soe Lwin and Awan Khwi Shein 2008. NEW COUNTRY RECORDS AND RANGE EXTENSIONS FOR MYANMAR AMPHIBIANS AND REPTILES. Hamadryad 33 (1): 83 – 96 - get paper here
 
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