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Calamaria strigiventris POYARKOV, NGUYEN, ORLOV & VOGEL, 2019

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Higher TaxaColubridae, Calamariinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Striped- belly reed snake
Vietnamese: Rã ́n mai gãÌm býòng soòc ðen
Russian: Polosatobriukhaya kalamariya
G: Gestreifte Zwergschlange 
SynonymCalamaria strigiventris POYARKOV, NGUYEN, ORLOV & VOGEL 2019: 337 
DistributionS Vietnam (Langbian Plateau: Biduop-Nui Ba NP), elevations 1970 – 2030 m

Type locality: high-elevation elfin montane evergreen forest on the summit of Bidoup Mt. in Biduop-Nui Ba NP., Da Chais Commune, Lac Duong District, Lam Dong Province, Langbian Plateau, southern Vietnam.  
TypesHolotype. ZMMU R-16043, adult male (sex determined based on gonadal dissection, field number NAP-00520) collected from under a rotten tree-log (Figs. 2 – 4) by Nikolay A. Poyarkov on May 9, 2009 (12.1118°N 108.6593°E; at an elevation of 1980 m a.s.l.).
Paratypes. Six specimens including ZMMU R-16045 (adult male, field number NAP-00486), ZMMU R-16044 (juvenile female, field number NAP-00485) collected on May 9, 2009 with other collection information same as the holotype; ZMMU R-16046 (adult male, field number NAP-01410), ZMMU R-16049 (adult female, field number NAP-01409), ZMMU R-16047 (adult female, field number NAP-01411), ZMMU R-16048 (juvenile female, field number NAP-01412) collected on June 2, 2010, by Nikolay A. Poyarkov from the same location with holotype at elevation range from 1970 to 2030 m a.s.l.. 
DiagnosisDiagnosis: A species of the genus Calamaria characterized by the following combination of morphological characters: (1) 9 – 11 modified maxillary teeth; (2) rostral wider than high; (3) prefrontal shorter than frontal, touching first two supralabials; (4) mental separated from anterior chin shields; (5) dorsal scales in 13 – 13 – 13 rows, all smooth; (6) single preocular; (7) single postocular; (8) 4 supralabials, the 2nd and 3rd contacting the eye; (9) eye diameter less than eye-mouth distance; (10) 5 infralabials; (11) six scales surrounding the paraparietal; (12) prefrontal touching 1st and 2nd supralabials; (13) ventral scales 130 – 183; (14) subcaudal scales 20 – 33, paired; (15) tail relatively short (8.4 – 17.9% of the total length), nearly as thick as body, slowly tapering anteriorly, then abruptly tapering to tip; (16) dorsal scales reducing to four rows above 17th subcaudal on tail; (17) dorsum uniform gray-brown, venter bright yellow with three interrupted longitudinal black stripes, one wide in the middle and a pair on the lateral edge of the ventrals. 
CommentHabitat: fossorial; primary non-disturbed high-elevation elfin ever-green forest. 
EtymologyThe specific name “strigiventris” is a Latin adjective in the nominative singular, feminine gender, derived from Latin words “strigilis” for “striped pattern” and “venter” for “belly,” referring to the distinctive black striped pattern of the ventral surface of the new species. 
  • Kwet, A. 2020. Liste der im Jahr 2019 neubeschriebenen Reptilien. Elaphe 2020 (3): 44-67
  • Poyarkov, Nikolay A.; Jr., Tan Van Nguyen, Nikolai L. Orlov, Gernot Vogel 2019. A New Species of the Genus Calamaria Boie, 1827 from the Highlands of the Langbian Plateau, Southern Vietnam (Squamata: Colubridae). Russ. J. Herpetol. 26 (6): 335-348 - get paper here
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