Genus Euterpina Norman, 1903

Eutrpina acutifrons (Dana, 1848) 3, 4, 5

Genus Tachidius Lilljeborg, 1853

Tachidius discipes Giesbrecht, 1881 4

Genus Microarthridion Lang, 1948

Microarthridion fallax Perkins, 1956 3, 4

Family Harpacticidae Dana, 1846

Genus Harpacticus Milne-Edwards, 1840

Harpacticus compsonix Monard, 1926 3
Harpacticus flexulosus Ceccherelli, 1988 4
Harpacticus flexus Brady & Robertson, 1873 3, 4
Harpacticus gracilis Claus, 1863 3, 4
Harpacticus littoralis G.O. Sars, 1910 3, 4
Harpacticus nicaeensis Claus, 1866 3
Harpacticus uniremis Kroyer, 1842 3, 4

Genus Tigriopus Norman, 1868

Tigriopus brevicornis (O.F. Muller, 1776) 3
Tigriopus fulvus (Fischer, 1860) 3

Family Tisbidae

Genus Tisbe Lilljeborg, 1853

Tisbe aragoi Battaglia & Volkmann-Rocco, 1969 3
Tisbe battagliai Volkmann-Rocco, 1972 3, 4
Tisbe bulbisetosa Volkmann-Rocco, 1972 4
Tisbe clodiensis Battaglia & Fava, 1968 3, 4
Tisbe cucumariae Humes, 1957 3, 4
Tisbe dobzhanskii Volkmann-Rocco & Battaglia, 1972 3, 4
Tisbe ensifer Fischer, 1960 3, 4
Tisbe furcata (Baird, 1837) 3, 4 S
Tisbe gracilis (T. Scott, 1895) 3 S
Tisbe histriana Marcus & Por, 1961 4
Tisbe holothuriae Humes, 1957 3, 4
Tisbe inflatiseta Volkmann, 1979 4
Tisbe longicornis (T. Scott & A. Scott, 1895) 4
Tisbe marmorata Volkman-Rocco, 1973 4
Tisbe perplexa Volkmann, 1979 4
Tisbe pontina Volkmann-Rocco, 1969 4
Tisbe reluctans Volkmann-Rocco, 1968 4
Tisbe reticulata Bocquet, 1951 3
Tisbe tenera (G.O. Sars, 1905) 3 S

Note:

Tisbe aragoi: Specie gemella di T. reticulata
Tisbe battagliai: Specie gemella di T. holothuriae
Tisbe dobzhanskii: Specie gemella di T. clodiensis
Tisbe furcata: Secondo Volkmann-Rocco (1971) molte segnalazioni di questa specie potrebbero in realtą corrispondere a T. holothuriae. La presenza di T. furcata nelle acque italiane richiede, pertanto, conferma
Tisbe inflatiseta: Specie gemella di T. bulbisetosa
Tisbe marmorata: Specie gemella di T. reticulata
Tisbe pontina: Specie gemella di T. holothuriae (from: Checklist of the Italian fauna on-line).

Genus Scutellidium Claus, 1866

Scutellidium ligusticum (Brian, 1920) 3, 4
Scutellidium longicauda (Philippi, 1840) 3, 4 S

Family Porcellidiidae Sars, 1904

Genus Porcellidium Claus, 1860

Porcellidium fimbriatum Claus, 1863 3, 4
Porcellidium ovatum Haller, 1879 3, 4
Porcellidium tenuicauda Claus, 1860 4
Porcellidium viride (Philippi, 1840) 3, 4

Family Peltidiidae Sars, 1904

Genus Peltidium Philippi, 1839

Peltidium gracile (Claus, 1889) 4
Peltidium purpureum Philippi, 1839 3, 4
Peltidium robustum (Claus, 1889) 4

Genus Clytemnestra Dana, 1848 (once in the family Clytemnestridae, recently synonymized with Peltidiidae (Seifried, 2003;Seifried, in litt.)

Clytemnestra rostrata (Brady, 1883) 3, 4

Genus Alteutha Baird, 1845

Alteutha depressa (Baird, 1837) 3
Alteutha interrupta (Goodsir, 1845) 3, 4

Genus Eupelte Claus, 1860

Eupelte gracilis Claus, 1860 3, 4

Tegastidae Sars, 1904

Genus Tegastes Norman, 1903

Tegastes areolatus Monard, 1903 3
Tegastes calcaratus G.O. Sars, 1910 3
Tegastes falcatus (Norman, 1868) 3
Tegastes longimanus (Claus, 1863) 3
Tegastes riedli Pesta, 1959 3
Tegastes [? neapolitanus (Claus, 1863)] (Capolongo et al. (1974)

Genus Parategastes G.O. Sars, 1904

Parategastes sphaericus (Claus, 1863) 3, 4

Genus Syngastes Monard, 1924

Syngastes cornalinus Monard, 1924 3