Synopsis of the terrestrial Reptiles of Equatorial Guinea Author Sánchez-Vialas, Alberto Author Calvo-Revuelta, Marta 0000-0002-8628-1055 Author Riva, Ignacio De La 0000-0001-5064-4507 albertosv@mncn.csic.es text Zootaxa 2022 2022-11-03 5202 1 1 197 http://dx.doi.org/10.11646/zootaxa.5202.1.1 journal article 182444 10.11646/zootaxa.5202.1.1 45ba25c1-47a9-4001-93d9-294815bf37e7 1175-5326 7285600 BF4831D2-D98B-4265-9138-03DB8607B826 Dipsadoboa unicolor Günther, 1858 Dipsadoboa unicolor Günther, 1858: 138 . Type locality: “ West Africa ”. Dipsadoboa unicolor viridiventris Laurent, 1956a: 206 . Type locality; “ Lubero , Kivu , Zaire ”. Distribution . It extends from Guinea-Bissau to Uganda . In Equatorial Guinea it has been recorded in Bioko ( Günther 1896 ; Boulenger 1896 ; Rasmussen 1993 ) at Musola ( Boulenger 1906 ) and in Río Muni at Benito River ( Boulenger, 1900 ) and Monte Alén National Park ( Lasso et al. 2002 ) ( Map 19C ). Comments. See account of Dipsadoboa viridis for the identity of Bocage’s (1895a) record from Bioko. Mertens (1964) highlighted some difficulties on the identification of D. viridis and D. unicolor , which were later examined by Rasmussen (1993) . Branch et al. (2019) revealed that specimens morphologically identified as D. unicolor from Cameroon and Uganda do not form a monophyletic group, being a specimen of D. unicolor from Cameroon more closely related to D. underwoodi than to a specimen identified as D. unicolor from Uganda . Thus, it is likely that this taxon includes more species. Boulenger (1905) identified D. unicolor among the species collected in Cabo San Juan by M. Martínez de la Escalera. However, after the revision of these specimens of Dipsadoboa housed in the MNCN, we reidentified them as D. viridis based on several morphological traits (see the account of D. viridis for morphological details). Specimens examined. No specimens were found in the examined collections.