[New trematode genus of the family Didymozoidae from a mackerel in the Indian Ocean].

A new trematode of the genus Paranema tobothrium triplovitellatum gen. et sp. n. from the body cavity of Scomber scombrus from the Indian ocean is described. The individuals of the new genus are not incysted. Testes paired, ovary twisted, unbranched, vitelline gland bifurcates, uterus forming three turns.