• Euchaeta Philippi, 1843
• Euchaeta abbreviata Park, 1978 accepted as Paraeuchaeta abbreviata (Park, 1978)
• Euchaeta acuta Giesbrecht, 1893
• Euchaeta acuta pacifica Esterly, 1911 accepted as Euchaeta media Giesbrecht, 1888
• Euchaeta aequatorialis (Tanaka, 1958) accepted as Paraeuchaeta aequatorialis Tanaka, 1958
• Euchaeta affinis Cleve, 1904 accepted as Paraeuchaeta affinis (Cleve, 1904)
• Euchaeta alaminae Park, 1975 accepted as Paraeuchaeta alaminae (Park, 1975)
• Euchaeta antarctica Giesbrecht, 1902 accepted as Paraeuchaeta antarctica (Giesbrecht, 1902)
• Euchaeta arabica Sciacchitano, 1931 (uncertain > taxon inquirendum)
• Euchaeta armata Boeck, 1873 accepted as Chiridius armatus (Boeck, 1873) accepted as Aetideopsis armatus (Boeck, 1873) accepted as Aetideopsis armata (Boeck, 1873)
• Euchaeta atlantica Lubbock, 1856 accepted as Euchaeta marina (Prestandrea, 1833)
• Euchaeta australis Brady, 1883 accepted as Undeuchaeta plumosa (Lubbock, 1856)
• Euchaeta austrina Giesbrecht, 1902 accepted as Paraeuchaeta austrina (Giesbrecht, 1902)
• Euchaeta barbata Brady, 1883 accepted as Paraeuchaeta barbata (Brady, 1883) accepted as Paraeuchaeta barbata barbata (Brady, 1883)
• Euchaeta barbata farrani With, 1915 accepted as Paraeuchaeta barbata farrani With, 1915
• Euchaeta barbata typica Mauchline, 1992 accepted as Paraeuchaeta barbata typica Mauchline, 1992
• Euchaeta biconvexa Park, 1978 accepted as Paraeuchaeta biconvexa (Park, 1978) accepted as Paraeuchaeta tumidula (Sars G.O., 1905)
• Euchaeta biloba (Farran, 1929) accepted as Paraeuchaeta biloba Farran, 1929
• Euchaeta birostrata (Brodsky, 1950) accepted as Paraeuchaeta birostrata Brodsky, 1950
• Euchaeta bisinuata Sars G.O., 1907 accepted as Paraeuchaeta bisinuata (Sars G.O., 1907)
• Euchaeta bradyi With, 1915 accepted as Paraeuchaeta bradyi (With, 1915)
• Euchaeta californica Esterly, 1906 accepted as Paraeuchaeta californica (Esterly, 1906)
• Euchaeta calva (Tanaka, 1958) accepted as Paraeuchaeta calva Tanaka, 1958
• Euchaeta carinata Möbius, 1874 accepted as Euchaeta norvegica Boeck, 1873 accepted as Paraeuchaeta norvegica (Boeck, 1873)
• Euchaeta communis Dana, 1849-1852 accepted as Euchaeta marina (Prestandrea, 1833)
• Euchaeta comosa (Tanaka, 1958) accepted as Paraeuchaeta comosa Tanaka, 1958
• Euchaeta concinna Dana, 1849-1852
• Euchaeta confusa (Tanaka, 1958) accepted as Paraeuchaeta confusa Tanaka, 1958
• Euchaeta consimilis Farran, 1936 accepted as Euchaeta concinna Dana, 1849-1852
• Euchaeta consimilis russelli Farran, 1936 accepted as Paraeuchaeta russelli (Farran, 1936)
• Euchaeta dactylifera Park, 1978 accepted as Paraeuchaeta dactylifera (Park, 1978)
• Euchaeta daitomarui Mori, 1937 accepted as Paraeuchaeta russelli (Farran, 1936)
• Euchaeta diadema Dana, 1849-1852 accepted as Paraeuchaeta diadema (Dana, 1849-1852)
• Euchaeta diegensis Esterly, 1911 accepted as Paraeuchaeta diegensis (Esterly, 1911) accepted as Paraeuchaeta media (Giesbrecht, 1888) accepted as Euchaeta media Giesbrecht, 1888
• Euchaeta dubia Esterly, 1906 accepted as Paraeuchaeta californica (Esterly, 1906)
• Euchaeta elongata Esterly, 1913 accepted as Paraeuchaeta elongata (Esterly, 1913)
• Euchaeta eltaninae Park, 1978 accepted as Paraeuchaeta eltaninae (Park, 1978)
• Euchaeta eminens (Tanaka & Omori, 1968) accepted as Paraeuchaeta eminens Tanaka & Omori, 1968
• Euchaeta erebi (Farran, 1929) accepted as Paraeuchaeta erebi Farran, 1929
• Euchaeta exigua Wolfenden, 1911 accepted as Paraeuchaeta exigua (Wolfenden, 1911)
• Euchaeta farrani With, 1915 accepted as Paraeuchaeta farrani (With, 1915) accepted as Paraeuchaeta barbata (Brady, 1883) accepted as Paraeuchaeta barbata barbata (Brady, 1883)
• Euchaeta flava Giesbrecht, 1888 accepted as Paraeuchaeta flava (Giesbrecht, 1888)
• Euchaeta gigas Brady, 1883 accepted as Valdiviella gigas (Brady, 1883) accepted as Valdiviella insignis Farran, 1908
• Euchaeta glacialis Hansen, 1886 accepted as Paraeuchaeta glacialis (Hansen, 1886)
• Euchaeta gladiofera Gaudy, 1963 accepted as Paraeuchaeta gladiofera (Gaudy, 1963) accepted as Paraeuchaeta paraconcinna (Fleminger, 1957) accepted as Euchaeta paraconcinna Fleminger, 1957
• Euchaeta gracilicauda (Scott A., 1909) accepted as Paraeuchaeta gracilicauda Scott A., 1909
• Euchaeta gracilis Sars G.O., 1905 accepted as Paraeuchaeta gracilis (Sars G.O., 1905)
• Euchaeta grandiremis Giesbrecht, 1888 accepted as Paraeuchaeta grandiremis (Giesbrecht, 1888)
• Euchaeta hanseni With, 1915 accepted as Paraeuchaeta hansenii (With, 1915)
• Euchaeta hansenii With, 1915 accepted as Paraeuchaeta hansenii (With, 1915)
• Euchaeta haswelli (Brady, 1918) accepted as Paraeuchaeta haswelli (Brady, 1918)
• Euchaeta hebes Giesbrecht, 1888 accepted as Paraeuchaeta hebes (Giesbrecht, 1888)
• Euchaeta hebes valida Scott T., 1894
• Euchaeta hessei Brady, 1883 accepted as Euchirella rostrata (Claus, 1866)
• Euchaeta hessei similis Scott T., 1894 accepted as Gaidius similis (Scott T., 1893) accepted as Gaetanus similis (Scott T., 1893) accepted as Gaetanus tenuispinus (Sars G.O., 1900)
• Euchaeta incisa Sars G.O., 1905 accepted as Paraeuchaeta incisa (Sars G.O., 1905)
• Euchaeta indica Wolfenden, 1906
• Euchaeta investigatoris (Sewell, 1929) accepted as Paraeuchaeta investigatoris Sewell, 1929
• Euchaeta japonica Marukawa, 1921 accepted as Paraeuchaeta elongata (Esterly, 1913)
• Euchaeta longicornis Giesbrecht, 1888
• Euchaeta longissima Park, 1978 accepted as Paraeuchaeta longissima (Park, 1978) accepted as Paraeuchaeta kurilensis Heptner, 1971
• Euchaeta magniloba Park, 1978
• Euchaeta malayensis (Sewell, 1929) accepted as Paraeuchaeta malayensis Sewell, 1929
• Euchaeta marina (Prestandrea, 1833)
• Euchaeta marina longispina Marukawa, 1908
• Euchaeta marinella Bradford, 1974
• Euchaeta media Giesbrecht, 1888
• Euchaeta murrayi Sewell, 1947 accepted as Paraeuchaeta plana (Mori, 1937) accepted as Euchaeta plana Mori, 1937
• Euchaeta norvegica Boeck, 1873 accepted as Paraeuchaeta norvegica (Boeck, 1873)
• Euchaeta oceana Thompson I.C., 1903 accepted as Paraeuchaeta oceana (Thompson I.C., 1903)
• Euchaeta ovata Sato, 1913 accepted as Paraeuchaeta ovata (Sato, 1913)
• Euchaeta paraacuta Tanaka, 1973
• Euchaeta paraconcinna Fleminger, 1957
• Euchaeta paracuta Tanaka, 1973 accepted as Euchaeta paraacuta Tanaka, 1973
• Euchaeta parvula Park, 1978 accepted as Paraeuchaeta parvula (Park, 1978)
• Euchaeta philippii Brady, 1883 accepted as Paraeuchaeta philippii (Brady, 1883)
• Euchaeta plana Mori, 1937
• Euchaeta polaris (Brodsky, 1950) accepted as Paraeuchaeta polaris Brodsky, 1950
• Euchaeta polita (Tanaka & Omori, 1968) accepted as Paraeuchaeta polita Tanaka & Omori, 1968 accepted as Paraeuchaeta calva Tanaka, 1958
• Euchaeta porrecta Sars G.O., 1905 accepted as Paraeuchaeta barbata (Brady, 1883) accepted as Paraeuchaeta barbata barbata (Brady, 1883)
• Euchaeta prestandreae Philippi, 1843 accepted as Euchaeta marina (Prestandrea, 1833)
• Euchaeta propinqua Esterly, 1906 accepted as Paraeuchaeta propinqua (Esterly, 1906)
• Euchaeta prudens (Tanaka & Omori, 1968) accepted as Paraeuchaeta prudens Tanaka & Omori, 1968
• Euchaeta pseudotonsa Fontaine, 1967 accepted as Paraeuchaeta pseudotonsa (Fontaine, 1967)
• Euchaeta pseudotumidula (Brodsky, 1950) accepted as Paraeuchaeta pseudotumidula Brodsky, 1950 accepted as Paraeuchaeta tumidula (Sars G.O., 1905)
• Euchaeta pubera Sars G.O., 1907
• Euchaeta pubescens Dana, 1849-1852 accepted as Paraeuchaeta pubescens (Dana, 1849-1852)
• Euchaeta pulchra Brady, 1883 accepted as Undeuchaeta plumosa (Lubbock, 1856)
• Euchaeta quadrata Farran, 1908 accepted as Paraeuchaeta gracilis (Sars G.O., 1905)
• Euchaeta rasa (Farran, 1929) accepted as Paraeuchaeta rasa Farran, 1929
• Euchaeta regalis Grice & Hulsemann, 1968 accepted as Paraeuchaeta regalis (Grice & Hulsemann, 1968)
• Euchaeta rimana Bradford, 1974
• Euchaeta robusta Wolfenden, 1911 accepted as Paraeuchaeta robusta (Wolfenden, 1911)
• Euchaeta rubicunda Farran, 1908 accepted as Paraeuchaeta rubicunda (Farran, 1908)
• Euchaeta rubra (Brodsky, 1950) accepted as Paraeuchaeta rubra Brodsky, 1950
• Euchaeta russelli Farran, 1936 accepted as Paraeuchaeta russelli (Farran, 1936)
• Euchaeta sarsi Farran, 1908 accepted as Paraeuchaeta sarsi (Farran, 1908)
• Euchaeta scaphula Fontaine, 1967 accepted as Paraeuchaeta tuberculata Scott A., 1909
• Euchaeta scotti Farran, 1908 accepted as Paraeuchaeta scotti (Farran, 1908)
• Euchaeta similis Wolfenden, 1908 accepted as Paraeuchaeta similis (Wolfenden, 1908)