Mertensophryne lonnbergi (Andersson, 1911)

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Mertensophryne > Species: Mertensophryne lonnbergi

Bufo lönnbergi Andersson, 1911, K. Svensk. Vetensk. Akad. Handl., 47: 35. Syntypes: BMNH 1911.7.7.4–5, MCZ 17804, and17830-31 (exchanged from NHRM according to Barbour and Loveridge, 1946, Bull. Mus. Comp. Zool., 96: 83), and NHRM (3 specimens), according to Grandison, 1985, in Frost (ed.), Amph. Species World: 52 (28 specimens noted in original description—DRF). Type locality: "Kenia [Mt. Kenya region], . . . in waterfilled elephant-tracks, 2,500 m. above the sea" and "between Blue Post and Roiru river", Kenya.

Bufo lönnbergi lönnbergiLoveridge, 1932, Occas. Pap. Boston Soc. Nat. Hist., 8: 49.

Bufo loennbergiGrandison, 1972, Zool. Meded., Leiden, 47: 31. Incorrect subsequent spelling.

Bufo lonnbergi — Grandison, 1985, in Frost (ed.), Amph. Species World: 52. Mandatory emendation.

Mertensophryne lonnbergiFrost, 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.

English Names

Lonnbergs Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 42).

Lönnbergs Toad (Channing and Howell, 2006, Amph. E. Afr.: 82).

Lönnberg's Forest Toad (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 88).


Kenya Highlands east of the Rift Valley and on Mount Kenya, above 1800 m elevation.

Geographic Occurrence

Natural Resident: Kenya

Endemic: Kenya


In the Bufo lonnbergi group of Martin, 1972, in Blair (ed.), Evol. Genus Bufo: 62. In the Bufo taitanus complex of Tandy and Keith, 1972, in Blair (ed.), Evol. Genus Bufo: 156. See Grandison, 1972, Zool. Meded., Leiden, 47: 31-35, for synonymy and review (as Bufo lonnbergi). See comments under Mertensophryne chappuisi, Mertensophryne mocquardi, Mertensophryne nairobiensis, and Mertensophryne nyikae. Art. 32.5.2 (ICZN, 1999, Internatl. Code Zool. Nomencl., Ed. 4) restricts the exchange of ö for oe to German words; Lönnberg is Swedish. Channing and Howell, 2006, Amph. E. Afr.: 82-83, provided an account. See statement of geographic range, habitat, and conservation status (as Bufo lonnbergi) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 611. Wasonga and Channing, 2007, Salamandra, 43: 239-244, documented the larval synapomorphy in this species. Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 145–147, reported on comparative tadpole morphology. Spawls, Wasonga, and Drewes, 2019, Amph. Kenya: 2, provided a range map for Kenya, photograph, and brief characterization. Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 88–89, provided a brief account, photograph, and range map.

External links:

Please note: these links will take you to external websites not affiliated with the American Museum of Natural History. We are not responsible for their content.