Amnirana Dubois, 1992

Amnirana albolabris (Hallowell, 1856) Photo figure 23A TYPE LOCALITY.— “West Africa”. Perret (1977) restricted the type locality to “ Gabon ” and Jongsma et al. (2018) deduced that it is “north of the Ogooué River in Gabon ”.

DISTRIBUTION.— This species is widespread across lowland rainforests of Gabon, Equatorial Guinea, Cameroon, Democratic Republic of Congo, Republic of Congo, Central African Republic and Uganda, also reaching northern Angola (fide Marques et al. 2018). In Equatorial Guinea, it occurs in Río Muni, where it has been recorded from Cabo San Juan and Monte Alén (Boulenger 1903; De la Riva 1994). Published records from Bioko are at Musola, San Carlos de Luba region, Ureca, and Basupu (Boulenger 1900, 1906a; Mertens 1965; Hydeman et al. 2017) (Map 25C).

COMMENTS.— Amnirana albolabris is a polyphyletic taxon that contains several undescribed species (Jongsma et al. 2018). Populations from Bioko form part of an undescribed species closely related to the nominotypic A. albolabris, which is present in Río Muni (Jongsma et al. 2018). The undescribed species from Bioko is also recorded from the coast of Cameroon (Jongsma et al. 2018); a similar distribution pattern is shown by Petropedetes newtonii (Sánchez-Vialas et al. 2018) .

SPECIMENS EXAMINED.— Ninety specimens. Ayamiken ( San Joaquín de Ndyiacom), Litoral, 1990 (EBD 31488) ; Bata, Litoral, 22 July 1987 (EBD 25040) ; Mbini-Bata, Carut, Litoral 21 October 1986 (EBD 21014, 21027) ; Miboman, Bata, Litoral, December 1987 (EBD 28111, EBD 28082–28083), (EBD 18290, EBD 18292–18293) ; Miboman, Km 27 Bata – Movo (EBD 18707– 18709) ; Ela Nguema, Bioko Norte, 20 September 1984 (EBD 18661) ; Bolondo, 21 June 1984 (EBD 18624–18625, EBD 18627–18628, EBD 18630–18632) ; Centro Sur (Evinayong), Akurenan, 24 August 1984 (EBD 18450–18452, EBD 18456–18462, EBD 18440–18445, EBD 18447–18449, EBD 18411–18431, EBD 18402) ; Ayamiken ( San Joaquín de Ndyiacom), December 1987 (EBD 28085) , without date (EBD 23078, EBD 31518); [Río Muni] (EBD 27850, 27852, 27853, 27854, 27855, 27856, 27857, 27859, 27860, 27862, 27863, 27864); Aconibe, 1 May 1987 (EBD, no label found) ; Basilé, Bioko, 01 February 1933 (MNCN 3916–3917) ; Concepción (= Riaba), Bioko Sur, 21 February 1933 (MNCN 4073–4075) ; Sosolo pond, Bioko, 03°14ʹ44.83ʺN, 08°34ʹ54.67ʺE 21 November 2003 (MNCN 48912–48913) ; River mouth of Baka, Bioko, 03°14ʹ44.83ʺN, 08°34ʹ54.67ʺE, 21 November 2003 (MNCN 48914–48919) ; River mouth of Fola, Bioko, 03°14ʹ44.13ʺN, 08°34ʹ41.58ʺE, 21 November 2003 (MNCN 48920) ; Río Osa, Bioko, 03°14ʹ52.19ʺN, 08°32ʹ23.77ʺE, 22 November 2003 (MNCN 48921) ; Río Rocrim Bococo Avendaño, Bioko, 03°26ʹ46.04ʺN, 08°26ʹ52.39ʺE, 03 December 2003 (MNCN 48922) .