Schilbetrema Paperna & Thurston 1968

Schilbetrema Paperna & Thurston, 1968 Diagnosis (after N’Douba et al. 1997): Four cephalic lobes (2 lateral, 2 anterior). Three pairs of single-celled head glands. Four eye spots with large sub-spherical granules; mid-ventral sub-terminal mouth; pharynx present. Two intestinal branches united posteriorly. Haptor with a pair of ventral anchors and a pair of dorsal anchors, two transverse bars (one dorsal and one ventral), 14 hooks. Ventral anchors with a protuberance at the base of the guard (external root or superficial root) to which the filament attaches. Dorsal and ventral bars with or without lateral horns and medial expansion. Testis posterior to ovary, between the intestinal branches. Vas deferens surrounding the left intestinal branch, fusiform seminal vesicle, elongated parallel to the left intestinal branch, vas deferens slightly dilated at its distal end. A prostate reservoir associated with the base of the MCO. Tubular MCO and complex accessory part joined by a rod at the base of the MCO. Massive median pre-testicular ovary. Vagina with right lateral opening and partially sclerotised wall. Ventral seminal receptacle. Lateral vitellogenic glands surrounding the intestinal branches dorsally and ventrally. Gill parasites of Schilbeidae (Siluriformes) from Africa. Type species: Schilbetrema quadricornis Paperna & Thurston, 1968. Type host: Schilbe intermedius Rüppell, 1883.