Batagur affinis (CANTOR, 1847)
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Higher Taxa | Geoemydidae (Geoemydinae), Testudinoidea, Testudines (turtles) |
Subspecies | Batagur affinis affinis (CANTOR 1847) Batagur affinis edwardmolli PRASCHAG, HOLLOWAY, GEORGES, PÄCKERT, HUNDSDÖRFER & FRITZ 2009 |
Common Names | E: Southern River Terrapin affinis: Western Malay River Terrapin edwardmolli: Eastern Malay River Terrapin |
Synonym | Tetraonyx affinis CANTOR 1847 Batagur affinis — THEOBALD 1868: 16 Batagur affinis — PRASCHAG et al. 2008 Batagur affinis — TTWG 2014 Batagur affinis — TTWG 2021 Batagur affinis edwardmolli PRASCHAG, HOLLOWAY, GEORGES, PÄCKERT, HUNDSDÖRFER & FRITZ 2009 Batagur affinis edwardmolli — TTWG 2014 Batagur affinis edwardmolli — TTWG 2021 |
Distribution | Myanmar (= Burma) (Irrawaddy River), S Thailand, S Vietnam, Cambodia, West Malaysia, Indonesia (Sumatra) affinis: Indonesia (Sumatra), Malaysia (West), Myanmar (?), Thailand (extirpated?); Type locality: “Pinang” = Penang, Malaysia (see comment) edwardmolli: eastern Malay Peninsula, Cambodia; once distributed in estuaries surrounding the Gulf of Thailand, extirpated in Vietnam; Type locality: Sre Ambel River system, Koh Kong Province, Cambodia. |
Reproduction | oviparous. |
Types | Lectotype: BMNH 1947.3.4.31 (designated by PRASCHAG et al. 2008). Holotype: NMW 38903, Natural History Museum Vienna, juvenile in alcohol (hatched and died in captivity); don. Head Start Centre Sre Ambel, July 2009 [edwardmolli] |
Diagnosis | Diagnosis (edwardmolli): Adults differ from nominotypical subspecies of Batagur affinis by their distinctly more elongated head with upturned snout; males with chocolate brown to almost black head (east coast of peninsular Malaysia) or sometimes rusty brown to reddish head (Sre Ambel River system, Cambodia), edges of mouth orange; iris golden or bright yellow. Females and juveniles with conspicuous whitish grey to silvery blotches in temporal and parietal region; hatchlings with distally yellow marginal scutes. For corresponding characters of B. a. affinis, see Table 2 in PRASCHAG et al. 2008). |
Comment | One of the three syntypes of Tetraonyx affinis from “Pinang” = Penang, Malaysia is a Batagur borneoensis (BMNH 1946.1.22.47) while the two other specimens are Batagur baska sensu lato. Habitat: B. affinis, B. baska, and B. borneoensis are the only species living in tidal, brackish areas of the estuaries of medium and large rivers (Ernst et al. 2000) Distribution: not in Singapore or not established there (Figueroa et al. 2023). |
Etymology | Etymology (edwardmolli): The new subspecies is named in recognition of Professor Edward O. Moll, one of the foremost experts on river turtles, who substantially contributed to the knowledge of Batagur affinis and its natural history. |
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