Abasia tripartita (Shiino, 1955) (basis of record)
Acanthocanthopsis Heegaard, 1945 (source of synonymy)
Acanthochondria argutula (Markevich, 1940) (basis of record)
Acanthochondria briani (Yü & Wu, 1932) (basis of record)
Acanthochondria chilomycteri (Thomson G.M., 1890) accepted as Acanthocanthopsis chilomycteri (Thomson, 1889) (basis of record)
Acanthochondria crassicornis (Krøyer, 1837) accepted as Heterochondria crassicornis (Krøyer, 1837) (basis of record)
Acanthochondria deltoidea (Fraser, 1920) accepted as Chondracanthus deltoideus Fraser, 1920 (basis of record)
Acanthochondria elongata (Bassett-Smith, 1898) (basis of record)
Acanthochondria pingi (Yü & Wu, 1932) (basis of record)
Acanthochondria tiddi (Price & Hames, 1968) accepted as Salmincola Wilson C.B., 1915 (basis of record)
Acanthocolax exilipes (Wilson C.B., 1911) (basis of record)
Acanthocyclops brevispinosus (Herrick, 1884) (basis of record)
Acanthocyclops carolinianus (Yeatman, 1944) (basis of record)
Acanthocyclops chappuisi (Naidenov & Pandourski, 1992) (basis of record)
Acanthocyclops denticornis Chislenko, 1977 (basis of record)
Acanthocyclops exilis (Coker, 1934) (basis of record)
Acanthocyclops hypogeus (Kiefer, 1930) accepted as Diacyclops hypogeus Kiefer, 1930 represented as Cyclops (Diacyclops) hypogeus Kiefer, 1930 (basis of record)
Acanthocyclops insectus (Forbes S.A., 1882) (basis of record)
Acanthocyclops parcus (Herrick, 1882) (basis of record)
Acanthocyclops propinquus Plesa, 1957 (basis of record)
Acanthocyclops strimonis (Pandourski, 1994) (basis of record)
Acanthocyclops venustoides (Coker, 1934) represented as Acanthocyclops venustoides venustoides (Coker, 1934) (basis of record)
Acanthocyclops vernalis brevispinosus (Herrick, 1895) (basis of record)
Acanthocyclops vernalis orientalis Borutzky, 1966 (basis of record)
Acanthocyclops vernalis parcus (Herrick, 1882) represented as Acanthocyclops parcus (Herrick, 1882) (basis of record)
Acantholochus asperatus (Cressey & Cressey, 1980) (basis of record)
Acantholochus crevalleus (Cressey, 1981) (basis of record)
Acantholochus nudiusculus (Cressey & Cressey, 1980) (basis of record)
Acanthomolgus Humes & Stock, 1972 (additional source)
Acanthomolgus cuneipes (Humes & Ho, 1968) (basis of record)
Acanthomolgus exilipes (Humes & Ho, 1968) (basis of record)
Acanthomolgus gentilis (Humes & Ho, 1968) (basis of record)
Acanthomolgus hians (Humes & Ho, 1968) (basis of record)
Acanthomolgus longispinifer (Humes & Ho, 1968) (basis of record)
Acanthomolgus telestophilus (Humes & Ho, 1968) (basis of record)
Acanthomolgus varirostratus (Humes & Ho, 1968) (basis of record)
Acanthomolgus verseveldti (Humes & Ho, 1968) (basis of record)
Acartia bermudensis Esterly, 1911 represented as Acartia (Acartiura) bermudensis Esterly, 1911 (basis of record)
Acartia bifilosa intermedia (Poppe, 1885) represented as Acartia (Acanthacartia) intermedia (Poppe, 1885) accepted as Acartia bifilosa (Giesbrecht, 1881) represented as Acartia (Acanthacartia) bifilosa (Giesbrecht, 1881) (additional source)
Acartia bifilosa tonsagiesbrechti Steuer, 1910 (basis of record)
Acartia clausi gaboonensis Scott T., 1894 (basis of record)
Acartia denticornis Brady, 1883 (basis of record)
Acartia erythraea brehmi Früchtl, 1923 represented as Acartia (Odontacartia) erythraea brehmi Früchtl, 1923 (basis of record)
Acartia erythraea valdiviae Früchtl, 1924 represented as Acartia (Odontacartia) erythraea valdiviae Früchtl, 1924 (basis of record)
Acartia floridana Davis, 1948 represented as Acartia (Acartiura) floridana Davis, 1948 (basis of record)
Acartia mossi (Norman, 1878) (basis of record)
Acartia ponteloides (Krichagin, 1873) (basis of record)
Acartia remivagantis Oliveira, 1946 (basis of record)
Acartia seshaiyai Subbaraju, 1968 (basis of record)
Acartia tsuensis Ito Tak, 1956 represented as Acartia (Acanthacartia) tsuensis Ito Tak, 1956 (basis of record)
Acartiidae Sars G.O., 1903 (additional source)
Achelidelphys reducta (Lafargue & Laubier, 1977) (basis of record)
Achelidelphys stellata (Lafargue & Laubier, 1977) (basis of record)
Achtheinus dentatus Wilson C.B., 1911 (source of synonymy)
Achtheinus impenderus Shen & Wang, 1958 accepted as Achtheinus pinguis Wilson C.B., 1912 (source of synonymy)
Achtheinus japonicus Wilson C.B., 1922 accepted as Achtheinus pinguis Wilson C.B., 1912 (source of synonymy)
Achtheinus oblongus Wilson C.B., 1908 (source of synonymy)
Achtheinus parvidens Wilson C.B., 1923 accepted as Achtheinus pinguis Wilson C.B., 1912 (source of synonymy)
Achtheinus pinguis Wilson C.B., 1912 (source of synonymy)
Acontiophorus brevifurcatus Stock, 1966 (basis of record)
Actopsyllus Wells, 1967 (additional source)
Acusicola tenax (Roberts, 1965) (basis of record)
Adranesius ruber Hesse, 1865 accepted as Mychophilus ruber (Hesse, 1865) accepted as Botryllophilus ruber Hesse, 1864 (source of synonymy)
Advena paradoxa (Beneden, 1851) accepted as Kabatazus paradoxus (Beneden, 1851) (source of synonymy)
Aethon globosus (Pillai, 1968) (basis of record)
Aethon priacanthi (Kirtisinghe, 1956) (basis of record)
Aetideopsis orientalis (Tanaka, 1965) (basis of record)
Aetideus mediterraneus Steuer, 1910 (basis of record)
Afrocamptus uncinatus (Chappuis, 1932) (basis of record)
Afrocyclops alter Kiefer, 1935 (basis of record)
Afrocyclops curticornis (Kiefer, 1932) (basis of record)
Afrocyclops doryphorus Kiefer, 1935 (basis of record)
Afrocyclops nubicus (Chappuis, 1922) (basis of record)
Afrocyclops sparsa Dussart, 1974 (basis of record)
Afrolaophonte brevipes (Chappuis, 1954) (basis of record)
Afrolaophonte renaudi (Chappuis & Delamare Deboutteville, 1956) (basis of record)
Afrolernaea nigeriensis (Dollfus, 1960) (basis of record)
Afrosenia Huys & Gee, 1996 (additional source)
Agetus flaccus (Giesbrecht, 1891) (source of synonymy)
Agetus limbatus (Brady, 1883) (source of synonymy)
Agetus typicus Krøyer, 1849 (source of synonymy)
Aglaodiaptomus clavipoides Wilson M.S., 1955 (basis of record)
Aglaodiaptomus conipedatus (Marsh, 1907) (basis of record)
Aglaodiaptomus dilobatus Wilson M.S., 1958 (basis of record)
Aglaodiaptomus kingsburyae Robertson A., 1975 (basis of record)
Aglaodiaptomus lintoni (Forbes S.A., 1893) (basis of record)
Aglaodiaptomus marshianus Wilson M.S., 1953 (basis of record)
Aglaodiaptomus pseudosanguineus (Turner, 1921) (basis of record)
Aglaodiaptomus saskatchewanensis Wilson M.S., 1958 (basis of record)
Aglaodiaptomus spatulocrenatus (Pearse, 1906) (basis of record)
Aglaodiaptomus stagnalis (Forbes S.A., 1882) (basis of record)
Akessonia Bresciani & Lützen, 1962 (additional source)
Albionella etmopteri (Yamaguti, 1939) accepted as Neoalbionella etmopteri (Yamaguti, 1939) (source of synonymy)
Albionella fabricii Rubec & Hogans, 1988 accepted as Neoalbionella fabricii (Rubec & Hogans, 1988) (new combination reference)
Albionella globosa (Leigh-Sharpe, 1918) accepted as Neoalbionella globosa (Leigh-Sharpe, 1918) (source of synonymy)
Albionella kabatai Benz & Izawa, 1990 accepted as Neoalbionella kabatai (Benz & Izawa, 1990) (source of synonymy)
Alcyonicola Scott T. & Scott A., 1895 accepted as Enalcyonium Olsson, 1869 (source of synonymy)
Alcyonicola fusiformis Scott T. & Scott A., 1895 accepted as Enalcyonium rubicundum Olsson, 1869 (source of synonymy)
Alcyonomolgus bicrenatus (Humes, 1982) (basis of record)
Alcyonomolgus dissimilis (Humes, 1982) (basis of record)