Two new species of Cichlidogyrus Parerna, 1960 (Monogena, Ancyrocephalidae) Gill parasites on Hemichromis fasciatus (Pisces, Cichlidae) in Africa, will remarks on parasite geographical distribution

The examination of gill parasites from Hemichromis fasciatus Peters, 1858 (Pisces, Cichlidae) in Africa revealed the presence of nine species of Monogenea, three belong to Onchobdello Poperna, 1968 and the others to Cichlidogyrus Paperna, 1960. Seven have been previously described (O. afromae Paperna, 1968; O. bopeleti Bilong Bilong Euzet, 1995; O. voltensis Paperna, 1968; C. dageti Dossou Birgi, 1984; C. euzeti Dossou Birgi, 1984; C. falcifer Dossou & Birgi, 1984 and C. longicirrus Paperna, 1965), two, belonging to the latter genus, are considered as new species: C. sonseoi n. sp. and C. teugelsi n. sp. As parasitic species are not present in all the host distribution area, we think that H. fasciatus is made up of two distinct populations (or even sister species).