Larval and post-larval development of Ergenstrema mugilis Paperna, 1964 (monogenea, ancyrocephalidae) parasite of Liza ramada (Risso, 1826) (teleostel, mugilidae).

The ciliated cells, chaetotaxy and excretory system of the oncomiracidium are fully described in Ergenstrema mugilis Paperna, 1964. The study of the post larval development shows a phase of cutaneous infestation in the fish host and the mode of transmission is discussed among Dactylogyroidea. The morphogenesis of the parasite haptor is described. The origin and migration of the hamuli in Dactylogyroidea are discussed.