nigropterus, Alestopetersius Poll [M.] 1967:84, 93, Fig. 18 [Annales, Musée Royal de l'Afrique Centrale, Tervuren, Série in 8o, Sciences Zoologiques No. 162; ref. 3529] Ibali, Democratic Republic of Congo. Holotype: MRAC 845. Paratypes: MRAC 820 (1), 839-840 (2), 842-844 (3), 846-847 (2). Type catalog: Derijst 1991:24 [ref. 21528]. Types are also paralectotypes of Petersius leopoldianus Boulenger (MRAC 820) or Petersius hilgendorfi Boulenger (all others). •Valid as Phenacogrammus nigropterus (Poll 1967) -- (Géry 1995:54 [ref. 22057]). •Valid as Alestopetersius nigropterus Poll 1967 -- (Paugy 1984:162 [ref. 6183], Mbimbi Mayi Munene & Stiassny 2012:59 [ref. 31766], Stiassny et al. 2021:1687 [ref. 39000]). Current status: Valid as Alestopetersius nigropterus Poll 1967. Alestidae. Distribution: Central Africa: Congo River basin, Democratic Republic of Congo. Habitat: freshwater.