Family Tetrastemmatidae
Tetrastemma Ehrenberg, 1831
Tetrastemma candidum (O.F. Müller, 1774) (3, 4, 5)
Tetrastemma cephalophorum Burger, 1895 (3)
Tetrastemma coronatum (Quatrefages, 1846) (3, 4)
Tetrastemma cruciatum Burger, 1895 (3)
Tetrastemma diadema Hubrecht, 1879 (3, 4)
Tetrastemma flavidum Ehrenberg, 1831 (3, 4)
Tetrastemma fulvum Kirsteuer, 1963 (4)
Tetrastemma helvolum Burger, 1895 (3, 4)
Tetrastemma longissimum Burger, 1895 (3, 4)
Tetrastemma melanocephalum (Johnston, 1837) (3, 4, 5)
Tetrastemma nimbatum Burger, 1895 (3)
Tetrastemma peltatum Burger, 1895 (3, 4)
Tetrastemma quatrefagesi Burger, 1904 (3)
Tetrastemma vastum Burger, 1895 (3, 4)
Tetrastemma vermiculus (Quatrefages, 1846) (3)
Tetrastemma virgatum Kirsteuer, 1963 (4)
Tetrastemma vittigerum (Burger, 1904) (3)
Prostomatella Friedrich, 1935
Prostomatella arenicola Friedrich, 1935 (*)
Prostoma Dugès, 1828
Prostoma graecense (Bohmig, 1892) (S)
Note
Prostomatella arenicola: Specie non segnalata per le acque italiane.
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