• Acanthaspidia decorata (Hansen, 1895) accepted as Iolanthe decorata Hansen, 1895
• Acanthaspidia laevis Chardy, 1975 accepted as Iolanthe laevis (Chardy, 1975)
• Acanthaspidia typhlops (G. O. Sars, 1879) accepted as Iolanthe typhlops (G. O. Sars, 1879)
• Acanthocope annulatus Menzies, 1962
• Acanthocope armata Chardy, 1972
• Acanthocope carinata Chardy, 1972
• Acanthomunna hystrix (Hansen, 1916)
• Acrobelione reverberii (Restivo, 1970)
• Aega affinis Milne Edwards, 1840
• Aega bicarinata Leach, 1818
• Aega crenulata Lutken, 1859
• Aega emarginata Leach, 1818 accepted as Aega psora (Linnaeus, 1758)
• Aega hirsuta Schioedte & Meinert, 1879
• Aega loveni Bovallius, 1886 accepted as Aegiochus ventrosa (M. Sars, 1859)
• Aega megalops Norman & Stebbing, 1886
• Aega microphthalma Dana, 1853
• Aega monophthalma Johnston, 1834
• Aega psora (Linnaeus, 1758)
• Aega rosacea (Risso, 1816) (uncertain > taxon inquirendum)
• Aega stroemii Lutken, 1859
• Aega tridens Leach, 1816
• Aega webbii (Guérin-Méneville, 1836)
• Aegapheles deshaysiana (H. Milne Edwards, 1840)
• Aegiochus arctica (Lütken, 1859)
• Aegiochus gracilipes (Hansen, 1895)
• Aegiochus incisa (Schioedte & Meinert, 1879)
• Aegiochus nordenskioldii Bovallius, 1885 accepted as Aegiochus ventrosa (M. Sars, 1859)
• Aegiochus ventrosa (M. Sars, 1859)
• Alitropus foveolatus Schiödte & Meinert, 1879 accepted as Alitropus typus H. Milne Edwards, 1840
• Alitropus typus H. Milne Edwards, 1840
• Alloanthura larwoodi Wägele, 1981 accepted as Indanthura larwoodi (Wägele, 1981)
• Amakusanthura iberica Reboreda & Wägele, 1992
• Amakusanthura libyana (Negoescu, 1980)
• Amuletta abyssorum (Richardson, 1911)
• Ananthura abyssorum (Norman & Stebbing, 1886)
• Ananthura ovalis Barnard, 1925
• Ananthura sulcaticauda Barnard, 1925
• Ancyroniscus bonnieri Caullery & Mesnil, 1919
• Androniscus roseus (C. Koch, 1838)
• Angeliera phreaticola Chappuis & Delamare-Deboutteville, 1952 represented as Angeliera phreaticola phreaticola Chappuis & Delamare-Deboutteville, 1952
• Angeliera phreaticola phreaticola Chappuis & Delamare-Deboutteville, 1952
• Angliera phreaticola Chappuis & Delamare-Deboutteville, 1952 accepted as Angeliera phreaticola Chappuis & Delamare-Deboutteville, 1952 represented as Angeliera phreaticola phreaticola Chappuis & Delamare-Deboutteville, 1952
• Anilocra frontalis H. Milne Edwards, 1840
• Anilocra physodes (Linnaeus, 1758)
• Anisarthrus pelseneeri Giard, 1907
• Anoplocopea hanseni Racovitza, 1908 accepted as Campecopea hanseni (Racovitza, 1908)
• Anoplocopea ischiana Verhoeff, 1942 accepted as Campecopea ischiana (Verhoeff, 1942)
• Anoplocopea lusitanica Nolting, Reboreda & Wägele, 1998 accepted as Campecopea lusitanica (Nolting, Reboreda & Wägele, 1998)
• Antennuloniscus dilatatus Chardy, 1974
• Antennuloniscus diversus Lincoln, 1985
• Antennuloniscus simplex Lincoln, 1985
• Anthelura elongata Norman & Stebbing, 1886
• Anthelura flexibilis (Pasternak, 1882)
• Anthelura truncata (Hansen, 1916) accepted as Malacanthura truncata (Hansen, 1916)
• Anthura gracilis (Montagu, 1808)
• Apanthura corsica Amar, 1953
• Apanthura libyana Negoescu, 1980 accepted as Amakusanthura libyana (Negoescu, 1980)
• Apanthura tyrrhenica Wägele, 1980
• Apanthuroides mediterranea (Negoescu, 1981)
• Apanthuroides spathulicauda (Wägele, 1981)
• Arcturella carlosteroi Reboreda, Wägele & Garmendia, 1994 accepted as Astacilla carlosteroi (Reboreda, Wägele & Garmendia, 1994)
• Arcturella cornuta Koehler, 1911 accepted as Astacilla cornuta (Koehler, 1911)
• Arcturella damnoniensis (Stebbing, 1874) accepted as Astacilla damnoniensis (Stebbing, 1874)
• Arcturella dilatata (G. O. Sars, 1883) accepted as Astacilla dilatata G. O. Sars, 1883
• Arcturella dollfusi Monod, 1925 accepted as Astacilla dollfusi (Monod, 1925)
• Arcturella poorei Castelló, 1997 accepted as Astacilla poorei (Castelló, 1997)
• Arcturinella banyulensis Poisson & Maury, 1931
• Arcturopsis giardi (Bonnier, 1896)
• Arcturus baffini (Sabine, 1824)
• Arcturus scabrosus Norman, 1904
• Arcturus serrulatus Whitelegge, 1904 accepted as Halearcturus serrulatus (Whitelegge, 1904)
• Armadillidium album Dollfus, 1887
• Armadillidium vulgare (Latreille, 1804)
• Armadilloniscus ellipticus (Harger, 1878)
• Armadilloniscus litoralis Budde-Lund, 1885 accepted as Armadilloniscus ellipticus (Harger, 1878)
• Asconiscus simplex G. O. Sars, 1899
• Asellus (Asellus) aquaticus (Linnaeus, 1758) represented as Asellus (Asellus) aquaticus aquaticus Linnaeus, 1758
• Asellus (Asellus) aquaticus aquaticus Linnaeus, 1758
• Asellus aquaticus (Linnaeus, 1758) represented as Asellus (Asellus) aquaticus (Linnaeus, 1758) represented as Asellus (Asellus) aquaticus aquaticus Linnaeus, 1758
• Asellus cavaticus Leydig, 1871 accepted as Proasellus cavaticus (Leydig, 1871)
• Asellus meridianus Racovitza, 1919 represented as Asellus meridianus meridianus Racovitza, 1919 accepted as Proasellus meridianus meridianus (Racovitza, 1919)
• Asellus meridianus meridianus Racovitza, 1919 accepted as Proasellus meridianus meridianus (Racovitza, 1919)
• Aspidarachna clypeata (G. O. Sars, 1870)
• Aspidonotus clypeatus (G. O. Sars, 1870) accepted as Aspidarachna clypeata (G. O. Sars, 1870)
• Aspidophryxus frontalis Bonnier, 1900
• Aspidophryxus peltatus G. O. Sars, 1883
• Astacilla arietina G. O. Sars, 1883
• Astacilla axeli Castelló, 1992
• Astacilla bocagei Nobre, 1903
• Astacilla bonnieri Stephensen, 1915 accepted as Astacilla bonnierii Stephensen, 1915
• Astacilla bonnierii Stephensen, 1915
• Astacilla carlosteroi (Reboreda, Wägele & Garmendia, 1994)
• Astacilla cornuta (Koehler, 1911)
• Astacilla damnoniensis (Stebbing, 1874)
• Astacilla dilatata G. O. Sars, 1883
• Astacilla dollfusi (Monod, 1925)
• Astacilla frigida (Hansen, 1916)
• Astacilla gorgonophila Monod, 1925
• Astacilla granulata (G. O. Sars, 1877)
• Astacilla intermedia (Goodsir, 1841)