Thrasops flavigularis ( Hallowell, 1852 )

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 : 84

Thrasops flavigularis ( Hallowell, 1852)

Figure 21A–B

Dendrophis flavigularis Hallowell, 1852: 205 . Type locality: “ Gabon ” [ Loveridge (1944) corrected the type locality to Gabon, originally given as “ Liberia, Western Africa”].

Thrasops flavigularis ( Hallowell, 1852) : Hallowell 1857: 67.

Hapsidophrys niger Günther, 1872: 25 . Type locality: “Gaboon”.

Thrasops pustulatus Buchholz & Peters, 1875 in Peters (1875): 199. Type locality: “Cameruns; Mungo”.

Distribution. It extends from Nigeria to the Democratic Republic of the Congo, south to northern Angola. In Equatorial Guinea it has been recorded both in Bioko at Moka ( Boulenger 1906; Loveridge 1944; Capocaccia 1961a; Mertens 1964a) and in Río Muni at Cabo San Juan ( Boulenger 1905) and Monte Alén National Park ( Lasso et al. 2002) ( Map 23C ).

Comments. The record of Dispholidus typus of Pérez del Val (2001) labelled as MNCN 19977, is a misidentification with a juvenile of T. flavigularis ( Figure 21B ). Because no confirmed records of D. typus exist in Equatorial Guinea, we remove it from the reptile species list of the country.

Specimens examined. Eleven specimens. Bioko: Malabo, 3º45′N 08º47′E, 02 July 1987 ( EBD 20829 ) . Río Muni: Cabo San Juan [ MNCN 9052 (recorded by Boulenger 1905), MNCN 19977 ] ; Mongomo , Añisoc ( EBD 25005 –25006 ) ; Mongomo , 1º38′N 11º19′E, 16 April 1986 ( EBD 20826 –20827 ) ; Miboman (road from Bata to Niefang) ( EBD 27552 ) ; Miboman, 30 km from Niefang ( EBD 25036 ) ; Miboman (road to Niefang), 08 July 1986 ( EBD 20828 ) ; Niefang, 01 June 1984 ( EBD 18672 ) .

Figures

FIGURE 21. From left to right: lateral, dorsal and ventral views of the head of: Thrasops flavigularis, adult specimen (A) (MNCN 9052), Thrasops flavigularis, juvenile specimen (B) (MNCN 19977), and Toxicodryas adamanteus (C) (EBD 27746). Photos: AS-V.

MAPS 23 A–C. Distribution maps for Equatorial Guinean records of (A) Thrasops aethiopissa; (B) Thrasops batesii; (C) Thrasops flavigularis.