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Pareas carinatus (WAGLER, 1830)

IUCN Red List - Pareas carinatus - Least Concern, LC

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Higher TaxaPareidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
SubspeciesPareas carinatus carinatus (WAGLER 1830)
Pareas carinatus unicolor (BOURRET 1934) 
Common NamesE: Keeled Slug Snake
G: Gekielte Schneckennatter
Chinese: 棱鳞钝头蛇 
SynonymAmblycephalus carinatus H. BOIE in SCHLEGEL 1826 (nomen nudum)
Amblycephalus carinatus SCHLEGEL 1826 (nomen nudum)
Amblycephalus carinatus BOIE 1828: 251 (nomen nudum)
Pareas carinata — WAGLER 1830: 181
Pareas carinata — DUMÉRIL, BIBRON & DUMÉRIL 1854: 439
Pareas berdmorei THEOBALD 1868
Amblycephalus carinatus — DE ROOIJ 1917: 277
Amblycephalus carinatus — SMEDLEY 1931: 53
Amblycephalus carinatus — KOPSTEIN 1936
Amblycephalus carinatus — DEUVE 1961: 30
Pareas carinatus — MANTHEY & GROSSMANN 1997: 376
Pareas carinatus — COX et al. 1998: 78
Pareas carinatus — SCHMIDT & KUNZ 2005: 41
Pareas carinatus — WALLACH et al. 2014: 535

Pareas carinatus carinatus (BOIE 1828)
Amblycephalus carinatus BOIE 1828: 251
Dipsas carinata — SCHLEGEL 1837: 285
Leptognathus carinatus — JAN 1863
Pareas carinatus — COCHRAN 1930
Amblycephalus carinatus carinatus — MERTENS 1930
Pareas carinatus — SMITH 1943
Pareas carinatus carinatus — HAAS 1950
Pareas carinatus carinatus — CHAN-ARD et al. 1999: 177
Pareas carinatus carinatus — NGUYEN et al. 2009

Pareas carinatus unicolor (BOURRET 1934)
Amblycephalus carinatus unicolor BOURRET 1934
Pareas carinatus unicolor — NGUYEN et al. 2009 
DistributionIndonesia (Java, Lombok, Sumatra, Bali [M. Auliya, pers. comm.]),
Malaysia (Malaya and East Malaysia)
Burma (Myanmar),
Thailand, Vietnam, Laos , Cambodia, China (Yunnan)

unicolor: Cambodia

Type locality: Java  
TypesSyntypes: RMNH 954 (pers. comm Gernot Vogel), ZSI 8021, ZSI 8022 (Bhosale et al. 2021)
Holotype: MNHN-RA 1938.0149 [unicolor] 
DiagnosisDiagnosis (genus): The genus Pareas is morphologically characterized by having medially smooth or keeled dorsal scales in 15 rows throughout the body; the ventrals preceded by a strongly enlarged preventral, larger than the ventrals; the subcaudals divided; the absence of mental groove; suboculars are usually present; supralabials usually not touching the eye (except in P. monticola and P. stanleyi); the anterior single inframaxillary shield lacking, three pairs of inframaxillaries, the first pair distinctly elongated, posterior inframaxillaries usually as long as wide or wider than long (Grossmann & Tillack 2003). 
CommentBehavior: nocturnal.

Type species: Dipsas carinata REINHARDT is the type species of the genus Pareas WAGLER 1830: 181.

Type genus: Pareas WAGLER 1830 is the type genus of the family Pareidae (not Pareatidae as is often used, see Savage 2015 for an explanation).

Habitat: Snakes of the genus Pareas are mainly arboreal. This species is semi-arboreal (Harrington et al. 2018).

Diet: slugs and snails; pareid snakes have more teeth on the right mandible than on the left for functional specialization in feeding on the dextral majority of land snails (Hoso 2017).

Synonymy: Kaiser et al. 2013 rejected the (sub-) generic names Dannyleeus Hoser 2012, Katrinahoserserpenea Hoser 2012 invalid and rejected their use instead of Pareas.

Distribution: Reported sometimes from, but not listed for Borneo by Stuebing et al. 2014. For a map of the P. hamptoni species complex see Ding et al. 2020: 180 (Fig. 1).

Key: Vogel et al. 2021 provide a key to the Pareas slug snakes of Myanmar.

Key: Quah et al. 2021 provide a key to the species of Pareidae of Borneo. 
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