Leptobrachella gracilis (Günther, 1872)

Class: Amphibia > Order: Anura > Family: Megophryidae > Subfamily: Leptobrachiinae > Genus: Leptobrachella > Species: Leptobrachella gracilis

Leptobrachium gracile Günther, 1872, Proc. Zool. Soc. London, 1872: 598. Holotype: BMNH 1872.2.19.35  according to Dehling, 2012, Zootaxa, 3328: 22; reregiostered as BMnh 1947.2.19.35 acccording to museum records. Type locality: "Matang", Sarawak, Malaysia (Borneo).

Leptobrachium gracileBoulenger, 1882, Cat. Batr. Sal. Coll. Brit. Mus., Ed. 2: 440.

Megalophrys gracilisBoulenger, 1908, Proc. Zool. Soc. London, 1908: 421.

Megophrys gracilisSmith, 1930, Bull. Raffles Mus., 3: 133.

Leptobrachium gracilisBerry and Hendrickson, 1963, Copeia, 1963: 643; Inger, 1966, Fieldiana, Zool., 52: 24.

Leptobrachium (Leptolalax) gracileDubois, 1980, Bull. Mens. Soc. Linn. Lyon, 49: 476.

Leptobrachium (Leptolalax) gracilisInger, 1983, in Rhodin and Miyata (eds.), Adv. Herpetol. Evol. Biol.: 16.

Leptolalax gracilisDubois, 1983, Alytes, 2: 148.

Leptolalax (Leptolalax) gracilisDelorme, Dubois, Grosjean, and Ohler, 2006, Alytes, 24: 15.

Leptobrachella gracilis — Chen, Poyarkov, Suwannapoom, Lathrop, Wu, Zhou, Yuan, Jin, Chen, Liu, Nguyen, Nguyen, Duong, Eto, Nishikawa, Matsui, Orlov, Stuart, Brown, Rowley, Murphy, Wang, and Che, 2018, Mol. Phylogenet. Evol., 124: 162, by implication.

English Names

Matang Asian Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 86).

Gracile Litter Frog (Chan-ard, 2003, Photograph. Guide Amph. Thailand: 78).

Sarawak Slender Litter Frog (Das, Jankowski, Makmor, and Haas, 2007, Mitt. Hamburg. Zool. Mus. Inst., 104: 154).

Slender Litter Frog (Dehling, 2012, Zootaxa, 3328: 21).


Northern Borneo in Kalimantan (Indonesia), Brunei, and Sarawak (Malaysia); see comment.

Geographic Occurrence

Natural Resident: Brunei, Indonesia, Malaysia, Malaysia, East (Sarawak and/or Sabah)


See accounts by Bourret, 1942, Batr. Indochine: 206-207; Inger, 1966, Fieldiana, Zool., 52: 24-28; Berry, 1975, Amph. Fauna Peninsular Malaysia: 32-33, and Inger, Stuebing, and Tan, 1995, Raffles Bull. Zool., 43: 121-122. Matsui, 1997, Copeia, 1997: 158–165, reported on advertisement call. See identification table by Manthey and Grossmann, 1997, Amph. Rept. Südostasiens: 68-69, to compare this species with other megophryids in the Sunda Shelf region. Das, Jankowski, Makmor, and Haas, 2007, Mitt. Hamburg. Zool. Mus. Inst., 104: 154, provided a brief description. See statement of geographic range, habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 625. Das, 2007, Amph. Rept. Brunei: 36, provided a photograph and a brief account. Dehling, 2012, Zootaxa, 3328: 20-34, reviewed and rediagnosed the systematics of the species, and concluded that Leptolalax gracilis proper is restricted to Borneo and that Malay Peninsula populations represent two unnamed species (on now named Leptobrachella platycephala) conflated with Leptobrachella gracilis. Matsui, 2006, Zool. Sci., Tokyo, 23: 821-830, noted that the isolated record in western Thailand (Thong Pha Phum Forest, Kanchanaburi Province) by Chan-ard, 2003, Photograph. Guide Amph. Thailand: 78-79, is likely referable to Leptobrachella melanoleuca. The Gunung Benom population is now recognized as Leptobrachella platycephala. The Gunung Tahan population previously referred to this species remains unnamed.

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