Hyperolius ocellatus

COMMENTS. — Hyperolius ocellatus sensu lato shows a complex phylogeographic structure formed by several lineages (Bell et al. 2017), which need taxonomic revision. Currently, there is one mitochondrial lineage on Bioko, whereas Río Muni could lie in a contact zone between two mainland mitochondrial lineages (Bell et al. 2017). Descriptions of the advertisement calls from Monte Alén were provided by Bosch et al. (2000). SPECIMENS EXAMINED. — Twenty-nine specimens. Bioko Sur (Luba), Moka, (3 º 19´N, 8 º 40´E), 25 July 1984 (14 specimens with the voucher number EBD 18606); Ayamiken (San Joaquín de Ndyiacom) (4 specimens without individual voucher number, EBD 31516), 1990; Caldera de Luba, Campamento Ureca, 11 March 2007 (MNCN 46720); Río San Antonio, Caldera de Luba, 13 March 2007 (MNCN 46725); northeast of Caldera de Luba, 12 March 2007 (MNCN 46726); BBPP camp, Caldera de Luba, Bioko, 03 ° 20 ʹ 47.32 ʺN, 08 ° 29 ʹ 48.44 ʺE, 28 November 2003 (MNCN 48945 – 48946); Río Iladyi, Bioko, 03 ° 19 ʹ 46.04 ʺN, 08 ° 40 ʹ 26.13 ʺE, 13 November 2003 (MNCN 48939 – 48944).

DISTRIBUTION. — This species ranges over a vast area, from south-eastern Nigeria to Democratic Republic of Congo and southwards to Gabon and Republic of Congo. In Equatorial Guinea, it has been recorded both in Río Muni (De la Riva 1994; Bell et al. 2017) and Bioko (Boulenger 1900, 1906 a; Mertens 1941, 1965; Hydeman et al. 2017; Bell et al. 2017) (Map 17 A).

TYPE LOCALITY. — “ Fernando Po ”, Bioko, Equatorial Guinea and “ Angola ”. Perret (1975) restricted the type locality to “ Fernando Po ” by lectotype designation.