FIRST RECORD OF Pareas vindumi VOGEL, 2015 (REPTILIA: PAREIDAE) FROM CHINA WITH A REVISION TO MORPHOLOGY

Yang, Jian-Huan; Yeung, Ho Yuen; Huang, Xiuzhen; Yang, Shen-Pin

doi:10.47605/tapro.v10i1.246

Cited by 3 publications

(6 citation statements)

References 8 publications

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“…As the type locality of P. macularius is located in Mon State, Myanmar, this raises the question of the taxonomic status of the populations from Laos (this work is currently in progress and will be presented elsewhere). Within P. hamptoni species group we confirm the results of Ding et al (2020) and Yang et al (2021) , suggesting that P. kaduri and P. nigriceps are sister taxa, while the phylogenetic position of P. vindumi remains unresolved. Genetic divergence among the three members of the Taiwan – Ryukyus clade of this group ( P. atayal , P. komaii , and P. iwasakii ) is comparatively low (6.9% < p < 9.0% in cyt b gene; see Table S7 ), and the basal radiation of this clade is estimated to happen only ca.…”

Section: Resultssupporting

confidence: 80%

“…Several recent taxonomic studies on Pareas have demonstrated that this genus has a high level of hidden and yet undescribed diversity ( e.g . You, Poyarkov & Lin, 2015 ; Bhosale et al, 2020 ; Vogel et al, 2020 , 2021 ; Ding et al, 2020 ; Liu & Rao, 2021 ; Yang et al, 2021 ). Out of 26 currently recognized species of Pareas (including those described in this work), twelve species were discovered within the last twelve years ( Uetz, Freed & Hošek, 2021 ), of which eleven species were described based on an integrative evidence from morphological and molecular data.…”

Section: Discussionmentioning

confidence: 99%

“…Several recent taxonomic studies have demonstrated that the species diversity of Pareinae is still underestimated ( e.g ., Vogel, 2015 ; Hauser, 2017 ; Quah et al, 2019 , 2020 ; Quah, Lim & Grismer, 2021 ; Le et al, 2021 ). The high degree of morphological similarity among closely related taxa of Pareinae often makes species delineation in slug snakes quite challenging ( Guo & Deng, 2009 ; Vogel, 2015 ; Yang et al, 2021 ), suggesting that the molecular data represent an effective tool to help untangle taxonomic controversies when morphological analyses yield inconsistent results ( You, Poyarkov & Lin, 2015 ; Loredo et al, 2013 ; Vogel et al, 2020 , 2021 ; Bhosale et al, 2020 ; Wang et al, 2020 ; Ding et al, 2020 ; Liu & Rao, 2021 ; Yang et al, 2021 ). Application of the integrative taxonomic approach combining evidence from morphological and molecular data resulted in the discovery of several previously unnoticed taxa and allowed to revise several species complexes, including the Pareas hamptoni complex ( You, Poyarkov & Lin, 2015 ; Bhosale et al, 2020 ; Ding et al, 2020 ; Liu & Rao, 2021 ; Yang et al, 2021 ), the P. margaritophorus complex ( Vogel et al, 2020 ; Suntrarachun et al, 2020 ), and the P. monticola complex ( Vogel et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

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An integrative taxonomic revision of slug-eating snakes (Squamata: Pareidae: Pareineae) reveals unprecedented diversity in Indochina

Poyarkov

Nguyen

Pawangkhanant

et al. 2022

PeerJ

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Slug-eating snakes of the subfamily Pareinae are an insufficiently studied group of snakes specialized in feeding on terrestrial mollusks. Currently Pareinae encompass three genera with 34 species distributed across the Oriental biogeographic region. Despite the recent significant progress in understanding of Pareinae diversity, the subfamily remains taxonomically challenging. Here we present an updated phylogeny of the subfamily with a comprehensive taxon sampling including 30 currently recognized Pareinae species and several previously unknown candidate species and lineages. Phylogenetic analyses of mtDNA and nuDNA data supported the monophyly of the three genera Asthenodipsas, Aplopeltura, and Pareas. Within both Asthenodipsas and Pareas our analyses recovered deep differentiation with each genus being represented by two morphologically diagnosable clades, which we treat as subgenera. We further apply an integrative taxonomic approach, including analyses of molecular and morphological data, along with examination of available type materials, to address the longstanding taxonomic questions of the subgenus Pareas, and reveal the high level of hidden diversity of these snakes in Indochina. We restrict the distribution of P. carinatus to southern Southeast Asia, and recognize two subspecies within it, including one new subspecies proposed for the populations from Thailand and Myanmar. We further revalidate P. berdmorei, synonymize P. menglaensis with P. berdmorei, and recognize three subspecies within this taxon, including the new subspecies erected for the populations from Laos and Vietnam. Furthermore, we describe two new species of Pareas from Vietnam: one belonging to the P. carinatus group from southern Vietnam, and a new member of the P. nuchalis group from the central Vietnam. We provide new data on P. temporalis, and report on a significant range extension for P. nuchalis. Our phylogeny, along with molecular clock and ancestral area analyses, reveal a complex diversification pattern of Pareinae involving a high degree of sympatry of widespread and endemic species. Our analyses support the “upstream” colonization hypothesis and, thus, the Pareinae appears to have originated in Sundaland during the middle Eocene and then colonized mainland Asia in early Oligocene. Sundaland and Eastern Indochina appear to have played the key roles as the centers of Pareinae diversification. Our results reveal that both vicariance and dispersal are responsible for current distribution patterns of Pareinae, with tectonic movements, orogeny and paleoclimatic shifts being the probable drivers of diversification. Our study brings the total number of Pareidae species to 41 and further highlights the importance of comprehensive taxonomic revisions not only for the better understanding of biodiversity and its evolution, but also for the elaboration of adequate conservation actions.

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Section: Resultssupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An integrative taxonomic revision of slug-eating snakes (Squamata: Pareidae: Pareineae) reveals unprecedented diversity in Indochina

Poyarkov

Nguyen

Pawangkhanant

et al. 2022

PeerJ

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“…We measured the body and tail lengths with a measuring tape (to the nearest of 1 mm). For comparison, we examined the type specimens of Pareas yunnanensis, data for other species of Pareas were taken from the original and subsequent descriptions (Boulenger 1900(Boulenger , 1905Vogt 1922;Pope 1935;Zhao et al 1998;Grossmann & Tillack 2003;Guo & Deng 2009;Guo et al 2011;Loredo et al 2013;Vogel 2015;You et al 2015;Hauser 2017;Bhosale et al 2020;Ding et al 2020;Vogel et al 2020Vogel et al , 2021Wang et al 2020;Le et al 2021;Liu & Rao 2021;Yang et al 2021;Poyarkov et al 2022).…”

Section: Methodsmentioning

confidence: 99%

“…Pareas Wagler, 1830 is a genus of small and slender arboreal nocturnal snakes with a blunt snout, missing mental groove, and no teeth on the anterior part of maxillary, as they feed on snails or slugs; they are also known as snail-eating or slug-eating snakes (Hoso et al 2007;Wallach et al 2014;You et al 2015;Poyarkov et al 2022). The genus Pareas now contains 26 recognized species (Le et al 2021;Liu & Rao 2021;Vogel et al 2021;Poyarkov et al 2022;Uetz et al 2022), of which 20 species are distributed in China (Bhosale et al 2020;Ding et al 2020;Liu & Rao 2021;Vogel et al 2020Vogel et al , 2021Yang et al 2021;Poyarkov et al 2022). Two subgenera are at present recognized within the genus: the subgenus Pareas includes six species distributed mostly in Indochina and Sundaland, whereas the subgenus Eberhardtia Angel, 1920 includes the remaining species and has a wider distribution, covering northeastern India, Myanmar, southern and eastern China, and southwards to Sumatra (Poyarkov et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Resurrection of Pareas yunnanensis (Vogt, 1922) with description of a new species of Pareas from Yunnan Province, China (Squamata, Pareidae)

Liu

Zhang²,

Poyarkov³

et al. 2023

EJT

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Based on molecular and morphological data of four specimens of Pareas Wagler, 1830 collected from the type locality of P. yunnanensis (Vogt, 1922), along with examination of the type specimens of P. yunnanensis, we revalidate this poorly known, secretive species. Furthermore, based on molecular and morphological lines of evidence we also describe a new species of Pareas from Xishuangbanna Prefecture, Yunnan Province, China. Morphologically, the new species closely resembles its sister species P. nigriceps Guo & Deng, 2009. However, the new species is divergent from the latter in cytochrome b mtDNA gene sequences, and can be distinguished from all congeners by the following combination of morphological characteristics: single preocular, postocular fused with subocular, loreal not bordering orbit, vertebral scales enlarged, 3–5 rows of mid-dorsal scales keeled at the middle of the body, ventral scales 160–171; subcaudals 62–64, dorsal surface of head solid black or reddish-brown, dark nuchal band present, iris brownish-black or reddish-brown.

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A New Species of Pareas Wagler, 1830 (Squamata, Pareidae) from Northwestern Yunnan, China

et al. 2023

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A new species of Pareas Wagler, 1830 is described from Dulongjiang Township, Gongshan County, Yunnan Province, China. Phylogenetically, the new species is most closely related to Pareas kaduri Bhosale, Phansalkar, Sawant, Gowande, Patel and Mirza, 2020; however, the genetic divergence (uncorrected p-distance) of the cyt b gene between the new species and P. kaduri reached 9.4%. Morphologically, the new species can be distinguished from P. kaduri by the absence of preoculars, loreal bordering the orbit, the fusion of subocular and postocular, three rows enlarged vertebral scales, five rows keeled mid-dorsal scales at the middle of the body, having more subcaudals, and having a relatively longer tail. In addition, the new species can be distinguished from all other congeners by a combination of morphological characteristics. Our work brings the total number of recognized species of the genus Pareas to 29, of which 23 occur in China.

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FIRST RECORD OF Pareas vindumi VOGEL, 2015 (REPTILIA: PAREIDAE) FROM CHINA WITH A REVISION TO MORPHOLOGY

Cited by 3 publications

References 8 publications

An integrative taxonomic revision of slug-eating snakes (Squamata: Pareidae: Pareineae) reveals unprecedented diversity in Indochina

An integrative taxonomic revision of slug-eating snakes (Squamata: Pareidae: Pareineae) reveals unprecedented diversity in Indochina

Resurrection of Pareas yunnanensis (Vogt, 1922) with description of a new species of Pareas from Yunnan Province, China (Squamata, Pareidae)

A New Species of Pareas Wagler, 1830 (Squamata, Pareidae) from Northwestern Yunnan, China

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