Bufo quadriporcatus Boulenger, 1887, Ann. Mag. Nat. Hist., Ser. 5, 19: 347. Holotype: BMNH 1947.2.21.94 (formerly 86.12.28.41), according to R.F. Inger In Frost, 1985, Amph. Species World: 57. Type locality: "within a radius of fifty miles from the town of Malacca", Malaysia (Malaya).
Ingerophrynus quadriporcatus — Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 365.
Four-ridged Toad (Lim and Lim, 1992, Guide Amph. Rept. Singapore: 23; Das, 2007, Amph. Rept. Brunei: 29).
Greater Malacca Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 43).
Malaya; Singapore; Borneo (Sabah, Brunei, Sarawak, and Kalimantan); Natuna I.; Sumatra.
In the former Bufo biporcatus group of Inger, 1972, in Blair (ed.), Evol. Genus Bufo: 107. See Bourret, 1942, Batr. Indochine: 180-181, and Inger, 1966, Fieldiana, Zool., 52: 63-66, for review. See also Berry, 1975, Amph. Fauna Peninsular Malaysia: 52, and Lim and Lim, 1992, Guide Amph. Rept. Singapore: 123-24, for brief accounts. Singapore record provided by Lim, 2002, Raffles Bull. Zool., 37: 170. See brief account and photo by Manthey and Grossmann, 1997, Amph. Rept. Südostasiens: 35-36. Leong and Tan, 2003, Herpetol. Rev., 34: 161, reported the species for Brunei. Das, 2007, Amph. Rept. Brunei: 29, provided a photograph and a brief account (as Bufo quadriporcatus).
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