Bioacoustics of Hylambates leonardi

COMMENTS .— There is a second described species of Phlyctimantis inhabiting west-central Africa, namely Phlyctimantis boulengeri Perret, 1986 ( Type locality: “Fainchang, région de Mamfe, Cameroon occidental”), considered as a subspecies of P. leonardi by some authors ( Amiet 2012 ; Amiet and Goutte 2017). The identity of several populations from west and central-western Africa remains problematic ( Amiet 2007 ; Köhler et al. 2005 ). Although there are records identified as P. leonardi from Bioko and Río Muni , the taxonomic allocation of both mainland and insular populations needs to be revised. Köhler et al. (2005) suggested that several populations from Cameroon , Gabon , Equatorial Guinea and Democratic Republic of Congo probably belong to P. boulengeri . Bosch et al. (2000) provided a call spectrogram of putative Phlyctimantis leonardi from Bome, Río Muni , which are highly similar to those of P. boulengeri from Barrage de Tchimbélé, Gabon ( Köhler et al. 2005 ). However, both species names ( P. boulengeri and P. leonardi ) are likely representing still more undescribed species ( Köhler et al. 2005 ; Amiet 2007 ; Onadeko and Rödel 2009). The specimen in the EBD collection came from Bata region, Río Muni , and morphologically resembles P. leonardi . Thus, we tentatively keep the populations from Equatorial Guinea as P . cf. leonardi until more studies help to clarify these questions. SPECIMENS EXAMINED .— Asonga, Bata, 1984 (EBD 18254).