Calamaria arcana YEUNG, LAU & YANG, 2022
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Calamaria arcana
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| Higher Taxa | Colubridae, Calamariinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Lingnan Reed Snake Chinese: 岭南两头蛇 |
| Synonym | Calamaria arcana YEUNG, LAU & YANG 2022 Calamaria pavimentata – LI et al. 2011 |
| Distribution | China (Mt. Dadongshan, Nanling National Nature Reserve, Guangdong Province) Type locality: Mt. Dadongshan, Nanling National Nature Reserve, Lianzhou County, Qingyuan City, Guangdong Province, China (中国广东南岭国家级自然保护区大东山管理站). (24°55’58.5”N 112°42’51.8”E) |
| Reproduction | |
| Types | Holotype: KFBG 14611, male. The specimen was found at between the hydroelectric station near Dadongshan Management Station (24°55’58.5”N 112°42’51.8”E) and Shizi Ping (石仔坪), 800–900 m above sea level, collected by Michael W.N. Lau on 7 July 2000 at 9:20 am. |
| Diagnosis | Diagnosis: Calamaria arcana sp. nov. is assigned to the genus Calamaria by its molecular phylogenetic position and the following morphological characters: dorsal scales in 13 rows throughout body, possessing elongate, cylindrical bodies, along with internasals and prefrontals fused, four supralabials and five infralabials (Inger and Marx 1965; Ziegler et al. 2008). Calamaria arcana sp. nov. could be distinguished from all other species of Calamaria by the combination of the following characters: (1) ten modified maxillary teeth; (2) four supralabials, second and third supralabials entering orbit; (3) preocular present; (4) mental not touching anterior chin shields; (5) six scales and shields surrounding the paraparietal; (6) 170 ventral scales; (7) 22 paired subcaudals; (8) tail not gradually tapering, abruptly tapering at the tip; (9) dorsal scales reduced to five rows above last subcaudal at tail; (10) dorsum of body and tail brownish; (11) dark collar on nuchal region absent; (12) two outermost dorsal scale rows light yellow with upper margins partly dark pigmented; (13) ventral scales immaculate, without dark outermost corners and pigmentation anteriorly; and (14) absence of distinct dark longitudinal line or scattered spots on the underside of tail. (YEUNG et al. 2022). |
| Comment | Calamaria arcana sp. nov. is currently only known from a single specimen. |
| Etymology | The species epithet “arcana” is the nominative form the Latin adjective “arcanus” meaning “hidden”, “secret” and is given in feminine form to match the female genitive declension of the genus name Calamaria. It refers to the fact that this species is difficult to find with only a single specimen discovered during our long term survey in southern China. The common name refers to the Lingnan (岭南, means ‘South of the Nanling Mountains’) region where the new species is found. Lingnan is a geographic area referring to the lands in the south of the Nanling Mountains, covering the modern Chinese provinces of Guangdong, Guangxi and Hainan, as well as northern Vietnam. |
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