Fig. 3From: Quadriacanthus species (Monogenea: Dactylogyridae) from catfishes (Teleostei: Siluriformes) in eastern Africa: new species, new records and first insights into interspecific genetic relationships Quadriacanthus aegypticus El-Naggar & Serag, 1986 ex C. gariepinus (Kenya). Sclerotized structures. Abbreviations: Va, ventral anchor; Vb, ventral bar; Da, dorsal anchor; Db, dorsal bar; HI-HVII, hooks; Vag, vagina; Mco, male copulatory organBack to article page