Cephalophus nigrifrons Gray 1871

Cephalophus nigrifrons Gray 1871, Proc. Zool. Soc. Lond., 1871: 598.

Type Locality: "Gaboon" (Gabon).

Vernacular Names: Black-fronted Duiker.

Subspecies::

Subspecies Cephalophus nigrifrons subsp. nigrifrons Gray 1871

Subspecies Cephalophus nigrifrons subsp. fosteri St. Leger 1934

Subspecies Cephalophus nigrifrons subsp. hooki St. Leger 1934

Subspecies Cephalophus nigrifrons subsp. hypoxanthus Grubb and Groves 2002

Subspecies Cephalophus nigrifrons subsp. kivuensis Lönnberg 1919

Subspecies Cephalophus nigrifrons subsp. rubidus Thomas 1901

Distribution: Rainforest zone in N Angola, Cameroon, Central African Republic, Dem. Rep. Congo, Equatorial Guinea (Mbini), Gabon, S Nigeria, and Republic of Congo; upland forest in Albertine Rift including Ruwenzori Mtns (Burundi, Dem. Rep. Congo, Rwanda, Uganda), Mt. Elgon (Uganda-Kenya border), Aberdare Range (Kenya), and Mt. Kenya (Kenya).

Conservation: IUCN – Endangered as C. n. rubidus, otherwise Lower Risk (nt) as C. nigrifrons .

Discussion: Treated as at least four evolutionary species ( C. nigrifrons, C. fosteri, C. hooki, and C. rubidus) by Cotterill (2003 b). Cephalophus rubidus also regarded as a species separate from C. nigrifrons by Kingdon (1982:292) and Jansen van Vuuren and Robinson (2001), but status revised by Grubb and Groves (2002 and in prep.).