Ansonia guibei Inger, 1966

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Ansonia > Species: Ansonia guibei

Ansonia guibei Inger, 1966, Fieldiana, Zool., 52: 104. Holotype: FMNH 152159, by original designation. Type locality: "Mesilau Cave, 1800 m, Mount Kina Balu, Sabah", Malaysia (Borneo).

English Names

Mesilau Stream Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 39).

Guibe's Slender Toad (Haas, Das, Hertwig, Bublies, and Schulz-Schaeffer, 2022, Guide to the Tadpoles of Borneo: 94). 


Montane northwestern Sabah, Malaysia (Borneo), 1300–2000 m elevation.

Geographic Occurrence

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

Endemic: Malaysia, Malaysia, East (Sarawak and/or Sabah)


See identification table by Manthey and Grossmann, 1997, Amph. Rept. Südostasiens: 26, to compare this species with others in the Sunda Shelf region. Malkmus, Manthey, Vogel, Hoffmann, and Kosuch, 2002, Amph. Rept. Mount Kinabalu: 65-67, provided an account. See photograph, map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 157. Haas, Das, Hertwig, Bublies, and Schulz-Schaeffer, 2022, Guide to the Tadpoles of Borneo: 95–97, summarized the knowledge of habitat, reproduction, larval morphology and coloration. Quah, Yambun Imbun, and Yek, 2024, Zootaxa, 5447: 253–262, discussed the first discovery of the species since 2017, its current conservation status, redescribed the adult and larval morphology of the species, and suggested that the range is not reliably known away from area of the type locality.  

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