Hyperolius castaneus Ahl, 1931

Class: Amphibia > Order: Anura > Family: Hyperoliidae > Genus: Hyperolius > Species: Hyperolius castaneus

Hyperolius castaneus Ahl, 1931, Das Tierreich, 55: 286. Holotype: ZMB unnumbered according to the original publication; lost, according to R. Laurent IN Frost, 1985, Amph. Species World: 208. Type locality: "Vulkangebiet nordöstlich des Kivu-Sees" (volcano region northeast of Lake Kivu; clearly the Virunga Mountains according to Roelke and Smith, 2010, Check List, 6: 525–531). The description in Ahl, 1931, Mitt. Zool. Mus. Berlin, 17: 31, appeared a few weeks later according to unpublished notes by A. Loveridge (fide R. Laurent).

Hyperolius latifrons Ahl, 1931, Das Tierreich, 55: 335. Holotype: ZMB unnumbered, according to the original publication. Type locality: "Karissimbi, 2400 m hoch". Synonymy by Laurent, 1950, Explor. Parc Natl. Albert, Miss. G.F. de Witte (1933–1935), 64: 26. The description in Ahl, 1931, Mitt. Zool. Mus. Berlin, 17: 65, appeared a few weeks later according to unpublished notes by A. Loveridge (fide R. Laurent).

Hyperolius rugegensis Ahl, 1931, Das Tierreich, 55: 355. Syntypes: ZMB unnumbered, according to the original publication. Type locality: Rugege Forest, 2000 m, Rwanda. Synonymy by Laurent, 1947, Bull. Mus. R. Hist. Nat. Belg., 23: 1–8; Laurent, 1950, Explor. Parc Natl. Albert, Miss. G.F. de Witte (1933–1935), 64: 26. The description in Ahl, 1931, Mitt. Zool. Mus. Berlin, 17: 82, appeared a few weeks later according to unpublished notes by A. Loveridge (fide R. Laurent).

Hyperolius ventrimaculatus Ahl, 1931, Das Tierreich, 55: 380. Holotype: ZMB unnumbered, according to the original publication. Type locality: "Vulkangebiet nordöstlich des Kivu-Sees". Tentative synonymy by Laurent, 1950, Explor. Parc Natl. Albert, Miss. G.F. de Witte (1933–1935), 64: 26. The description in Ahl, 1931, Mitt. Zool. Mus. Berlin, 17: 107, appeared a few weeks later according to unpublished notes by A. Loveridge (fide R. Laurent).

Hyperolius adolphi-friederici Ahl, 1931, Das Tierreich, 55: 399. Holotype: ZMB unnumbered, according to the original publication; Laurent, 1961, Rev. Zool. Bot. Afr., 64: 69, regarded ZMB 36114 as "Type". Type locality: "Rugegewald [= Rugege Forest], 2000 m", Rwanda. Synonymy by Laurent, 1950, Explor. Parc Natl. Albert, Miss. G.F. de Witte (1933–1935), 64: 26. The description in Ahl, 1931, Mitt. Zool. Mus. Berlin, 17: 116, appeared a few weeks later according to unpublished notes by A. Loveridge (fide R. Laurent).

Hyperolius castaneus castaneusLaurent, 1951, Rev. Zool. Bot. Afr., 44: 368, by implication; Laurent, 1972, Explor. Parc Natl. Virunga, Ser. 2, 22: 63.

Hyperolius castaneus rhodogaster Laurent, 1951, Rev. Zool. Bot. Afr., 44: 368. Holotype: MRAC unnumbered, according to the original publication. Type locality: "Mwana, 1.600 m., Territoire de Mwenga, [South] Kivu", Dem. Rep. Congo. See comment. 

Hyperolius adolfifriedericiLaurent, 1961, Rev. Zool. Bot. Afr., 64: 68. Incorrect subsequent spelling.

English Names

Ahl's Reed Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 66).

Brown Reed Frog (Channing and Howell, 2006, Amph. E. Afr.: 156).

Montane Reed Frog (Channing and Howell, 2006, Amph. E. Afr.: 156 [alternative name]).

Distribution

Forest swamps in the highlands of western Burundi, Rwanda, and Uganda to the highlands of Kahuzi-Biega National Park and north to the Lendu Plateau in eastern Dem. Rep. Congo.   

Comment

Closely similar and sometimes indistinguishable from Hyperolius lateralis according to Schiøtz, 1999, Treefrogs Afr.: 159–160, who provided a brief account. Channing and Howell, 2006, Amph. E. Afr.: 156–157, provided an account (in the sense of including Hyperolius constellatus as a synonym). See photograph, map, description of geographic range and habitat, and conservation status (in the sense of including Hyperolius constellatus) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 283. Greenbaum, Sinsch, Lehr, Valdez, and Kusamba, 2013, Zootaxa, 3731: 473–494, reported on the taxonomy of this species and noted that the status of Hyperolius castaneus rhodogaster is problematic and it may actually be a distinct species or a synonym of Hyperolius lateralis. Lehr, Dehling, Greenbaum, and Sinsch, 2015, ZooKeys, 546: 125–152, reported on embryogeneis and larval morphology. 

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