Synopsis of the Amphibians of Equatorial Guinea based upon the Authors’ Field Work and Spanish Natural History Collections Author Sánchez-Vialas, Alberto Museo Nacional de Ciencias Naturales (MNCN-CSIC), C / José Gutiérrez Abascal, 2. 28006, Madrid, Spain; Author Calvo-Revuelta, Marta Museo Nacional de Ciencias Naturales (MNCN-CSIC), C / José Gutiérrez Abascal, 2. 28006, Madrid, Spain; Author Castroviejo-Fisher, Santiago Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS). Av / Ipiranga, 6681, Prédio 40, sala 110, 90619 - 900, Porto Alegre, Brazil; * Corresponding author: IDlR (iriva @ mncn. csic. es) Author De, Ignacio Museo Nacional de Ciencias Naturales (MNCN-CSIC), C / José Gutiérrez Abascal, 2. 28006, Madrid, Spain; text Proceedings of the California Academy of Sciences 2020 2020-03-31 66 8 137 230 journal article 295393 10.5281/zenodo.11105986 4c7b4d3d-1fbe-4f48-8cb2-002e928eae42 0068-547X 11105986 Sclerophrys camerunensis ( Parker, 1936 ) Photo figures 9D; 10A–D TYPE LOCALITY .— “Oban, Calabar”, Nigeria . DISTRIBUTION .— This species is widely distributed across the Guinean forest in West Africa, extending from Guinea to East Africa, across Central African Republic and Tanzania . In Equatorial Guinea , it has been recorded both from Río Muni , at Monte Alén ( De la Riva 1994 ), and Bioko ( Mertens 1965 ; Hydeman et al. 2017 ) ( Map 11B ). COMMENTS .— Our revision provides several new records from Río Muni and Bioko. In their molecular phylogeny, Liedtke et al. (2016) included samples from Bioko, which seem to be closely related to the Cameroonian ones. Márquez et al. (2000) described the calls for Río Muni populations. SPECIMENS EXAMINED .— Thirtytwo specimens . Bata , Río Muni , 1965 ( EBD 2714 ) ; Niefang , 13 July 1984 ( EBD 18602 ) ; Oveng-Akurenam , 27 August 1984 ( EBD 18406–18407 ) ; Bioko Sur ( Luba ), 08 June 1984 ( EBD 18660 ) ; Oveng-Akurenam , 23 August 1984 ( EBD 18432 ) ; Bata , Río Bizingui , 30 August 1986 ( EBD 25024 ) ; Nvom ( Aconibe-Asoc ), 8 May 1987 ( EBD 25025 ) ; Miboman , 01 September 1984 ( EBD 18286 ) ; Anisoc (orillas del río Nobo ), 17 September 1987 ( EBD 27499 ) ; Akoaseng ( Evinayong-Mongomo ), 09 July 1987 ( EBD 27500 ) ; San Joaquín de Ndyiacom ( EBD 31489 , B9242) ; San Joaquín de Ndyiacom ( 6 specimens with number EBD 31519 ) ; Moka , Bioko ( MNCN 3085 ) ; Caldera de Luba , Bioko , 03°21ʹ34.88ʺN 08°31ʹ55.50ʺE , 09 December 2005 ( MNCN 46713–46714 ) ; Ureca camp, Caldera de Luba , Bioko , 03°21ʹ12.59ʺN 08°30ʹ47.36ʺE , 18 March 2007 ( MNCN 46718 ) ; Ureca camp, Caldera de Luba , Bioko , 03°21ʹ12.59ʺN , 08°30ʹ47.36ʺE , 10 March 2007 ( MNCN 46723–46724 ) ; Biao Lake , Moka , Bioko , 3°21ʹ14.97ʺN 8°37ʹ25.64ʺE , 10 November 2003 ( MNCN 48876–48881 ) ; Mariluzś farm, Moka , Bioko , 03°20ʹ23.47ʺN , 8°40ʹ6.20ʺE , 12 November 2003 ( MNCN 48882 ) .