Pareas (Eberhardtia) yunnanensis ( Vogt, 1922 )

Liu, Shuo, Zhang, Dongru, Poyarkov, Nikolay A., Hou, Mian, Wu, Li, Rao, Dingqi, Nguyen, Tan Van & Vogel, Gernot, 2023, Resurrection of Pareas yunnanensis (Vogt, 1922) with description of a new species of Pareas from Yunnan Province, China (Squamata, Pareidae), European Journal of Taxonomy 860 (1), pp. 1-26 : 9-14

publication ID

https://doi.org/ 10.5852/ejt.2023.860.2045

publication LSID

lsid:zoobank.org:pub:D489D635-D4C1-46A3-B535-7882386EFF06

DOI

https://doi.org/10.5281/zenodo.7651007

persistent identifier

https://treatment.plazi.org/id/6F1AB431-FFDE-9209-FE2E-F471FE42F9B2

treatment provided by

Felipe

scientific name

Pareas (Eberhardtia) yunnanensis ( Vogt, 1922 )
status

 

Pareas (Eberhardtia) yunnanensis ( Vogt, 1922)

Figs 2–4 View Fig View Fig View Fig ; Tables 3–4 View Table 3 View Table 4

Amblycephalus yunnanensis Vogt, 1922: 142 .

Amblycephalus yunnanensis — Mell 1922. — Pope 1935. — Ding et al. 2020.

Amblycephalus monticola yunnanensis — Mell 1931.

Pareas yunnanensis — Rao & Yang 1992. — Guo et al. 2020 — Wang et al. 2020. — Liu & Rao 2021.

Pareas chinensis (in part) — Zhao & Adler 1993. — Zhao 2006. — Yang & Rao 2008. — Wallach et al. 2014.

Pareas cf. yunnanensis — Poyarkov et al. 2022.

Revised diagnosis

This species differs from Pareas geminatus by having fewer subcaudals, relatively more rows of keeled mid-dorsal scales, relatively fewer ventral scales, solid black dorsal surface of head, and no distinct large black spots or stripe on each side of head; it differs from P. xuelinensis Liu & Rao, 2021 by infralabials not fused with chin-shields, vertebral scales enlarged, having fewer ventral scales, fewer subcaudals, relatively more rows of keeled mid-dorsal scales, and solid black dorsal surface of head.

SVL 387–482 mm in adults, TL 94–110 mm in adults, TL/SVL 0.22–0.25; preoculars mostly single, rarely two; postoculars and suboculars mostly fused, rarely separated; loreal bordering orbit in most individuals; prefrontal bordering orbit; supralabials 6–8, infralabials 6–8; infralabials not fused with chin-shields; dorsal scales in 15 rows throughout the body; vertebral scales enlarged; 5–7 rows of middorsal scales keeled on the middle part of the body; precloacal plate undivided; ventral scales 169–175; subcaudals 59–65, all paired. Dorsal surface of head black; no or 1–2 indistinct large black spots on each side of head, no stripe on each side of head; two wide black stripes pass from parietals to the vertical black bars on neck; dark nuchal band absent; vertical black bars distinct on trunk and indistinct on tail; iris brownish-yellow or brownish-orange.

Etymology

The specific epithet is a toponymic adjective given in reference to Yunnan Province, China. We propose “ Yunnan slug-eating snake” for the common English name and “ṙ南钝±蛇” (Yún Nán Dùn Tóu Shé) for the common Chinese name of this species.

Type material

Syntypes CHINA • 2 ♀♀ (adults); Dali Prefecture , Yunnan Province; ZMB 27660 View Materials , 65431 View Materials .

Additional material examined

CHINA – Yunnan Province • 2 ♀♀ adults; Dali Prefecture, Dali City, Xiaguan Town ; 25°36′17″ N, 100°11′33″ E; elev. 2250 m; 12 Jun. 2022; S. Liu leg.; KIZ 2022033 View Materials , 2022034 View Materials GoogleMaps 1 ♀ adult; Dali Prefecture, Dali City, Dali Town ; 25°41′56″ N, 100°8′2″ E; elev. 2230 m; 13 Jun. 2022; S. Liu leg.; KIZ 2022035 View Materials GoogleMaps 1 juv.; Dali Prefecture, Dali City, Xiaguan Town ; 25°37′52″ N, 100°11′44″ E; elev. 2140 m; 15 Jun. 2022; S. Liu leg.; KIZ 2022036 View Materials GoogleMaps .

Distribution

This species is currently known only from Dali City and its adjacent areas, Dali Prefecture, Yunnan Province, China ( Fig. 8 View Fig ).

Phylogenetic position

Pareas yunnanensis belongs to the subgenus Eberhardtia and is a member of the P. hamptoni ( Boulenger, 1905) species group ( Poyarkov et al. 2022). Phylogenetically it is reconstructed as a sister species of P. geminatus (see Fig. 1 View Fig ).

Kingdom

Animalia

Phylum

Chordata

Class

Reptilia

Order

Squamata

Family

Pareatidae

Genus

Pareas

Loc

Pareas (Eberhardtia) yunnanensis ( Vogt, 1922 )

Liu, Shuo, Zhang, Dongru, Poyarkov, Nikolay A., Hou, Mian, Wu, Li, Rao, Dingqi, Nguyen, Tan Van & Vogel, Gernot 2023
2023
Loc

Amblycephalus yunnanensis

Vogt T. 1922: 142
1922
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