Polemon notatus (Peters, 1882)

Sánchez-Vialas, Alberto, Calvo-Revuelta, Marta & Riva, Ignacio De La, 2022, Synopsis of the terrestrial Reptiles of Equatorial Guinea, Zootaxa 5202 (1), pp. 1-197 : 97-99

Polemon notatus (Peters, 1882)

Figure 24C

Microsoma notatum Peters 1882a: 127 . Type locality: originally not stated. Designated as Cameroon by Chirio & LeBreton (2007).

Cynodontophis aemulans Werner 1902 . Type locality: “ Congo ”.

Polemon notatus aemulans Trape, J.F. & R. Roux-Estève 1995: 43 .

Distribution. This species ranges from Cameroon to the western region of Central African Republic and Democratic Republic of the Congo. In Equatorial Guinea it has been recorded in Río Muni at Monte Alén National Park ( Lasso et al. 2002) ( Map 27B ).

Comments. Two subspecies are recognized on the basis of ventral scale number, P. notatus notatus and P. notatus aemulans ( Werner, 1902) . In Equatorial Guinea the nominal subspecies is present. The phylogenetic relationships of Aparallactinae are discussed by Portillo et al. (2018); among the included species of Polemon in this study, P. notatus represents the most phylogenetically differentiated lineage ( Portillo et al. 2018).

Specimens examined. One specimen. Río Muni: Monte Alén National Park (in the EBD collection, without EBD number).

ATRACTASPIDINAE

Figures

FIGURE 24. From left to right: lateral, dorsal and ventral views of the head of: Aparallactus modestus (A) (EBD 27538), Polemon collaris (B) (EBD 20943), and Polemon notatus (C) (in the EBD collection, without EBD number). Photos: AS-V.

MAPS 27 A–C. Distribution maps for Equatorial Guinean records of (A) Polemon collaris (question mark represents an imprecise record); (B) Polemon notatus; (C) Atractaspis boulengeri.