Rhabdophis nuchalis (BOULENGER, 1891)
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Higher Taxa | Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
Subspecies | |
Common Names | E: Hubei Keelback Chinese: 颈槽蛇 |
Synonym | Tropidonotus nuchalis BOULENGER 1891: 281 Tropidonotus nuchalis — BOULENGER 1893: 218 Natrix swinhonis nuchalis — MELL 1931 [1929] Natrix nuchalis — SMITH 1943: 284 Rhabdophis nuchalis MALNATE 1960 Rhabdophis nuchalis nuchalis JIANG & ZHAO 1983 Nuchisulcophis nuchalis — MAHENDRA 1984 Rhabdophis nuchalis nuchalis — NGUYEN et al. 2009 Rhabdophis nuchalis — WALLACH et al. 2014: 636 |
Distribution | NE India (Nagaland), Myanmar (= Burma), Vietnam China (Hubei, Sichuan, Guizhou, Shaanxi, Shanxi, Gansu, Guangxi, E Tibet, Yunnan, Guangdong), elevation 1200-2750 m. Type locality: “Ichang, Upper Yangtse-Kiang” |
Reproduction | oviparous |
Types | Holotype: unknown (fide NGUYEN et al. 2009) |
Diagnosis | Additional details, e.g. a detailed description or comparisons (599 characters), are available for collaborators and contributors. Please contact us for details. |
Comment | Some species of this genus are venomous although we do not have information about this particular species. Group: the Rhabdophis nuchalis group contains 4 species, R. nuchalis, R. pentasupralabialis, R. leonardi, and R. chiwen, fide Zhu et al. 2022. Zhu et al. 2022 also present a key to the 4 species. However, Nguyen & David 2023 included 5 species in the group: Rhabdophis angeli, nuchalis, kaiyuanensis, leonardi, swinhonis, guangdongensis, and chiwen (although they say in the previous sentence that they recognize “6” species, but listed only 5; in a pers. comm., 31 Aug 2023, Tan Nguyen says there are the aforementioned 7). Type species: Mahendra (1984) designated Tropidonotus nuchalis Boulenger 1891 as the type species of his new genus Nuchisulcophis. Subspecies: Rhabdophis nuchalis pentasupralabialis JIANG & ZHAO 1983 has been elevated to full species. Rhabdophis pentasupralabialis has five supralabials where the 5th is the longest while the nominal R. nuchalis has six supralabials and 5th is the longest. The first two to three dorsal scale rows of the former taxon are smooth while only one row (rarely two) in the later one. The former taxon is shorter (500 mm) than the later (600 mm). Diet: earthworms and firefly larva (Yoshida et al. 2020). Distribution: see map in Nguyen & David 2023: Fig. 1. |
Etymology | Etymology not given in original description, but most probably referring to the "very distinct groove along the middle of the nape." |
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