iSE Nigeria, S Cameroon and Bioko: E DR Congo to W Kenya
1 Barker et al. (2004) [Barker, 2004 #218] and Beresford et al. (2005) [Beresford, 2005 #277] found Promerops closely related to Modulatrix. The phylogenetic tree presented in Fig. 2 in Johansson et al. (2008) [Johansson, 2008 #10998] permits the grouping of the genera included here and supports the restoration of the genus Arcanator.
2 For resurrection of this genus see Johansson et al. (2008) [Johansson, 2008 #10998].
3 Treated as a species of the bulbul genus Phyllastrephus in Rand & Deignan (1960) [Rand, 1960 #3196]; but later seen as a thrush as by Benson & Irwin (1975) [Benson, 1975 #273] and Irwin & Clancey (1986) [Irwin, 1986 #2081]. The genus is supported by the molecular findings of Johansson et al. (2008) [Johansson, 2008 #10998]; but see Dowsett & Dowsett-Lemaire (1993) [Dowsett, 1993 #1416].
4 Not recognised by Collar & Robson (2007) [Collar, 2007 #12226].
5 For association with Arcanator and Modulatrix see Jønsson & Fjeldså (2006) [Jønsson, 2006 #9914] and Johansson et al. (2008) [Johansson, 2008 #10998].