Belongs within: Lybiidae.
Lybius is a genus of African barbets characterised by one or two strong teeth on the tomia (Short & Horne 2002).
Lybius Hermann 1783 (see below for synonymy)B94
|--+--L. torquatus (Dumont 1816)JT12, SH02 [=Bucco torquatusSH02; incl. L. torquatus albigularisSH02, L. torquatus nampunjuSH02]
| | |--L. t. torquatusSH02
| | |--L. t. bocagei (Sousa 1886)SH02 [=Barbatula bocageiM-PG70, Stactolaema leucotis bocageiSH02]
| | |--L. t. congicus (Reichenow 1898)SH02
| | |--L. t. irroratus (Cabanis 1878)SH02
| | |--L. t. pumilio Grote 1927SH02
| | |--L. t. vivacens Clancey 1977SH02
| | `--L. t. zombae (Shelley 1893)SH02
| `--L. vieilloti (Leach 1815)JT12, SH02 [=Pogonius vieillotiSH02; incl. L. vieilloti tessmanniM-PG70]
| |--L. v. vieilloti [incl. L. vieilloti frater]M-PG70
| |--L. v. buchanani Hartert 1924SH02
| `--L. v. rubescens (Temminck 1823)SH02 [=Pogonias rubescensM-PG70]
`--+--L. melanopterus (Peters 1854)JT12, SH02 [=Pogonias (Laimodon) melanopterusSH02]
`--+--L. bidentatus (Shaw 1798)JT12, SH02 [=Bucco bidentatusSH02]
| |--L. b. bidentatusSH02
| `--L. b. aequatorialis (Shelley 1889)SH02 (see below for synonymy)
`--L. dubius (Gmelin 1788)JT12, SH02 [=Bucco dubiusSH02]
Lybius incertae sedis:
L. chaplini Clarke 1920SH02
L. guifsobalito Hermann 1783S05 (see below for synonymy)
L. leucocephalus (de Filippi 1853) [=Laimodon leucocephalus; incl. Ly. leucocephalus usukumae]SH02
|--L. l. leucocephalusSH02
|--L. l. adamauae Reichenow 1921SH02
|--L. l. albicauda (Shelley 1881) [incl. L. leucocephalus pareensis]SH02
|--L. l. leucogaster (Bocage 1877)SH02
|--L. l. lynesi Grant & Mackworth-Praed 1938SH02
`--L. l. senex (Reichenow 1887)SH02
L. minor (Cuvier 1817)SH02 (see below for synonymy)
|--L. m. minorSH02
`--L. m. macclounii (Shelley 1899)SH02 [=Melanobucco macclouniiM-PG70]
L. rolleti (de Filippi 1853) [=Pogonias rolleti]SH02
L. rubrifacies (Reichenow 1892) [=Pogonorhynchus rubrifacies]SH02
‘Pogonias’ saltii Swainson 1837S05
L. undatus (Rüppell 1837) (see below for synonymy)SH02
|--L. u. undatusS05
|--L. u. leucogenys (Blundell & Lovat 1899)SH02
|--L. u. salvadorii Neumann 1903SH02
`--L. u. thiogaster Neumann 1903S05
Lybius Hermann 1783 [incl. Pogonias Illiger 1811 non Lacépède 1802, Pogonorhynchus van der Hoeven 1833; Pogoniidae, Pogonorhynchidae]B94
Lybius bidentatus aequatorialis (Shelley 1889)SH02 [=Malanobucco aequatorialisM-PG70; incl. L. bidentatus aethiopsSH02, L. bidentatus friedmanni Bannerman 1933SH02, M-PG70]
Lybius guifsobalito Hermann 1783S05 [incl. L. abyssinicusS05, L. habessinicusS05, Pogonias brucii Rüppell 1837S05, Phytotoma tridactylaS05, Lybius tridactylus ugandae Berger 1907M-PG70, L. guifsobalito ugandaeSH02]
Lybius minor (Cuvier 1817)SH02 [=Pogonias minorSH02; incl. L. levaillantii intercedens Neumann 1908M-PG70, SH02, M-PG70, L. minor intercedensM-PG70, L. levaillantiiM-PG70]
Lybius undatus (Rüppell 1837) [=Pogonias undatus; incl. L. undatus gardullensis, L. undatus squamatus, L. undatus tenafensis]SH02
*Type species of generic name indicated
References
[B94] Bock, W. J. 1994. History and nomenclature of avian family-group names. Bulletin of the American Museum of Natural History 222: 1–281.
[JT12] Jetz, W., G. H. Thomas, J. B. Joy, K. Hartmann & A. Ø. Mooers. 2012. The global diversity of birds in space and time. Nature 491: 444–448.
[M-PG70] Mackworth-Praed, C. W., & C. H. B. Grant. 1970. African Handbook of Birds ser. 3 vol. 1. Birds of West Central and Western Africa. Longman: London.
[SH02] Short, L. L., & J. F. M. Horne. 2002. Family Capitonidae (barbets). In: Hoyo, J. del, A. Elliott & J. Sargatal (eds) Handbook of the Birds of the World vol. 7. Jacamars to Woodpeckers pp. 140–219. Lynx Edicions: Barcelona.
[S05] Steinheimer, F. D. 2005. Eduard Rüppel’s avian types at the Natural History Museum, Tring (Aves). Senckenbergiana Biologica 85 (2): 233–264.