You are here » home advanced search search results Pareas niger

Pareas niger POPE, 1928

Can you confirm these amateur observations of Pareas niger?

Add your own observation of
Pareas niger »

We have no photos, try to find some by Google images search: Google images

Higher TaxaPareidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Black Snail-eating Snake, Mengzi Snail-eating Snake
Chinese: 蒙自钝头蛇 (Mengzi Dun-tou-she) 
SynonymAmblycephalus niger POPE 1928: 4
Pareas mengziensis WANG, CHE, LIU, KI, JIN, JIANG, SHI & GUO 2020 
DistributionChina (Yunnan)

Type locality: Yunnanfu,Yunnan Province, China

mengziensis: China (Yunnan); Type locality: Mengzi, Yunnan Province, China, at an elevation of 1 900 m elevation  
TypesHolotype: AMNH 22703, female
Holotype. YBU 14252, adult female, collected in July 2014.
Paratypes. Two adult females (YBU 141251 and YBU 15100) and three adult males (YBU 14253, YBU 14288, and YBU 15114) from the same locality and adjacent regions collected in July 2014 and July 2015 [mengziensis] 
DiagnosisDiagnosis. “An Amblycephalus with a black tail and a large amount of black on
the dorsum. The loreal is excluded from the eye, and at midbody 7 rows of scales are keeled” (Pope 1928: 4).

Comparisons: A. niger differs markedly in color from all the other Chinese species. In addition, it is distinguished from all but yunnanensis and stanleyi by its keeled scales. In yunnanensis the loreal reaches the eye and the
vertebral row is enlarged, so from this species niger is amply distinct. The low caudal count in stanleyi separates it not only from niger but the rest of the Chinese species as well (Pope 1928: 4).

Diagnosis (mengziensis). (1) solid black marking on back of head extending along whole dorsal of body; (2) single preocular; (3) postocular fused with subocular; (4) loreal not bordering orbit; (5) temporals 2+3+3; (6) prefrontal bordering orbit; (7) three rows of mid dorsal scales slightly enlarged; (8) 3–7 rows of mid dorsal scales keeled; (9) 6–7 supralabials; (10) 8–9 infralabials; (11) 6–7 maxillary teeth; (12) cloaca undivided; (13) ventral scales 167–173; (14) subcaudals 54–61, paired (Wang et al. 2020).

Comparison (mengziensis). Pareas mengziensis sp. nov. can be distinguished from P. carinatus, P. nuchalis, and P. menglaensis sp. nov. by having one thin elongated subocular (vs. two or three suboculars). It is most similar to P. yunnanensis Mell, 1931, P. niger Pope, 1928, and P. nigriceps in terms of color pattern, but differs from these species by eight or nine infralabials (vs. seven) and three rows of mid dorsal scales enlarged (vs. not enlarged or only one enlarged mid dorsal scale). It differs from the remaining species of Pareas by having a large solid black area on back of head and body (Wang et al. 2020). 
CommentSynonymy: Liu and Rao 2021 removed Amblycephalus niger POPE 1928: 4 from the synonymy of P. komaii and synonymized it with P. mengziensis, hence niger takes priority over P. mengziensis which becomes a synonym. 
EtymologyThe new species is named after the type locality Mengzi City, Yunnan Province, China. 
  • Pope,C.H. 1928. Four new snakes and a new lizard from South China. American Museum Novitates 325: 1-4 - get paper here
  • Wang P, Che J, Liu Q, Li K, Jin JQ, Jiang K, Shi L, Guo P 2020. A revised taxonomy of Asian snail-eating snakes Pareas (Squamata, Pareidae): evidence from morphological comparison and molecular phylogeny. ZooKeys 939: 45-64 - get paper here
External links  
Is it interesting? Share with others:

As link to this species use URL address:

without field 'search_param'. Field 'search_param' is used for browsing search result.

Please submit feedback about this entry to the curator