FIGURE 6. a in Erpobdellid leeches (Annelida, Clitellata, Hirudinida) from Tunisia: New records with the description of a new Trocheta species

FIGURE 6. a: Reproductive system of T. tunisiana n. sp.: atrium (at), ovisacs (o), preatrial loops (pr.l), sperm ducts (s), testisacs (t); b: anterior sucker of T. africana in the left (after Nesemann and Neubert, 1994) and T. tunisiana n. sp. in the right; arrows point to the pseudognathes; c: Schematic annulations type and gonopores of both Tunisian species of Trocheta.