Rhabdophis helleri (SCHMIDT, 1925)
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Higher Taxa | Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
Subspecies | |
Common Names | E: Heller’s Red-necked Keelback G: Heller-Rothals-Wassernatter Chinese: 红脖颈槽蛇 |
Synonym | Natrix helleri SCHMIDT 1925: 3 Natrix subminiata helleri — MELL 1931 [1929] Rhabdophis subminiatus helleri — BOURRET 1935: 4 Natrix subminiata helleri — RENDAHL 1937 Rhabdophis subminiatus var. helleri — DEUVE 1961: 14 Rhabdophis subminiata helleri — TAYLOR 1965 Rhabdophis subminiatus helleri — ZHAO et al. 1986 Rhabdophis subminiatus helleri — NGUYEN et al. 2009 Rhabdophis helleri — LIU et al. 2021 Rhabdophis helleri — DAVID & VOGEL 2021 |
Distribution | China (Yunnan, Guangxi, Guangdong, Fujian, Hong Kong, Sichuan, Guizhou), N Vietnam, Myanmar, India (Nagaland, Manipur, Meghalaya, Assam ?, Mizoram, Sikkim; Arunachal Pradesh [A. Captain, pers. comm.], Tripura), Bhutan, Bangladesh, Nepal Type locality: Tengyueh, 5500 feet elevation, Province of Yunnan, China, 25°01'N, 98°30'E. |
Reproduction | oviparous |
Types | Holotype: AMNH 20149, paratype: FMNH |
Diagnosis | DIAGNOSIS. Closely allied to Natrix subminiata of Java and southeastern Asia, from which it is distinguished by a higher number of ventral scales,163-172,compared with132-157 in subminiata as here restricted. Dorsal scale rows 19, the outer smooth, the median rows sharply keeled; ventrals 163-172; anal divided; caudals 75-86; upper labials 7-9, three entering the eye; a single preocular; three postoculars; temporals 2-2; general color uniform olive, with reddish markings on the neck, chiefly confined to the skin between the scales (Schmidt 1925: 3). |
Comment | Venomous. Can inflict serious coagulopathic envenoming but, unlike its congener R. tigrinus, has not caused any human fatalities (Weinstein 2017). Behavior: diurnal. Distribution: For a map see David & Vogel 2021: 110 (Fig. 9). |
Etymology | Named after Edmund Heller (1875-1939), American zoologist and ornithologist. |
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