Dr. Murai Éva szerk.: Parasitologia Hungarica 18. (Budapest, 1985)

Location: gill filaments Number of species studied: 5 Description: Body elongated, tapering at anterior and posterior ends. Body length 1.0 (0.6I. 1), width 0.16 (0. 13-0. 23) mm. Cephalic lobes present. Four pigmented eye spots on the anterior end. Haptor elongated with 14 hooks and a pair of dorsal and ventral anchors. Dorsal anchors simple with well developed inner roots and an elongated bar. Total length of dorsal anchors (between the inner root and the point) 25 (24-26). Outer length 18 (17. 5-20). Inner root 10 (8-11) long. Outer root very short, not extending 2 in length. Point 10. 1 (9.3II. 2) long. Length of the bar between dorsal anchors 16. 0 (15. 7-16. 3), width 2. 0 (1. 9-2. 2). Ventral anchors with short blades and well developed roots. Their total length (between the outer root and the point) 18 (17. 5-18. 5). The point is fixed by a small sclerotised part of the haptor. Inner length 11.6 (11-12). Roots forming right angle with each other. Inner roots sometimes with a small protrusion. Length of outer root 7.0 (6. 5-7.2), that of inner one 5.6 (5.2-6.2). Point short, its length 3. 0 (2.8-3.2). Fig. 1. Sclerotized organs of Jainus nursei da: dorsal anchor, va: ventral anchor, b: bars, co: copulatory organ, v: vagina, h: hooks Horse-shoe shaped bar with two anterio-lateral processes and a small posteriorly directed process in the centre. Length of the bar 10. 8 (10. 5- 11. 3), width 2. 7 (2. 5-3. 1), length of the anterio-lateral processes 12.9 (11.4-14.0). Hooks similar and of embriónál type, with a length of 17 (15-18). Copulatory organ consisting of a 44 (40-48) long cirrus which originates from an oval solid funnel. One additional plate attached to rim of funnel and another one to distal portion of cirrus. A sclerotised vagina, composed of a long tube, measures 41 (38-43) in length. On the basis of morphological characteristics and the measurements of sclerotised elements we have identified this species as J. nur sei, a monogenean described by ERGENS (1973) from the gills of Ah^^es_nursei in Egypt. The present finding is a new host record.