• Bittium (Elachista) Dall & Bartsch, 1901 † accepted as Alabina Dall, 1902
• Bittium (Elachista) californicum Dall & Bartsch, 1901 † accepted as Alabina californica (Dall & Bartsch, 1901)
• Elachista Duby, 1830
• Elachista Treitschke, 1833
• Elachista antarctica Skottsberg, 1953
• Elachista areschougii P.L.Crouan & H.M.Crouan, 1867 accepted as Myriactula areschougii (P.L.Crouan & H.M.Crouan) G.Hamel, 1935
• Elachista attenuata Harvey, 1846 accepted as Myriactula rivulariae (Suhr ex Areschoug) Feldmann, 1937
• Elachista australis J.Agardh, 1882
• Elachista breviarticulata (Suhr) Areschoug, 1842 accepted as Elachista flaccida (Dillwyn) Fries, 1835
• Elachista chondrii Areschoug, 1875
• Elachista chordae (Areschoug) Kylin, 1907 accepted as Myriactula chordae (Areschoug) Levring, 1937
• Elachista clandestina P.Crouan & H.Crouan, 1867 accepted as Myriactula clandestina (P.Crouan & H.Crouan) Feldmann, 1945
• Elachista claytoniae Skinner, 1985
• Elachista coccophorae Takamatsu, 1938
• Elachista confusicola Noda, 1981 accepted as Elachista tenuis Yamada, 1928
• Elachista crassa Takamatsu, 1938 accepted as Proselachista taeniiformis (Yamada) Y.-P.Lee & Garbary, 2000
• Elachista endarachnae Stegenga, J.J.Bolton & R.J.Anderson, 2002 accepted as Elachistiella endarachnae (H.Stegenga, J.J.Bolton & R.J.Anderson) V.Cassano, Y.Yoneshigue-Valentin & M.J.Wynne, 2004
• Elachista falcata Y.-P.Lee, 2000
• Elachista fasciculata (Reinke) H.Gran, 1893 accepted as Leptonematella fasciculata (Reinke) P.C.Silva, 1959
• Elachista flaccida (Dillwyn) Fries, 1835
• Elachista fracta H.Gran, 1893 accepted as Elachista stellaris J.E. Areschoug, 1842
• Elachista fucicola (Velley) Areschoug, 1842
• Elachista fucicola f. grevillei Hamel accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista fucicola f. lubrica (Ruprecht) Printz, 1926 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista fucicola f. profunda Ercegovic, 1957
• Elachista fucicola var. lubrica (Ruprecht) Rosenvinge, 1893 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista globosa Ørsted, 1844 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista globosa Takamatsu, 1938 accepted as Elachista okamurae Yoshida, 1997
• Elachista globulosa (C.Agardh) J.Agardh, 1848
• Elachista grevillei Arnott ex Harvey, 1857 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista haydenii Gatty, 1863 accepted as Myriactula haydenii (Gatty) Levring, 1937
• Elachista holdgatei (Bradley, 1965)
• Elachista hookeri Dugdale, 1971
• Elachista intermedia P.L.Crouan & H.M.Crouan, 1867
• Elachista intermedia f. profunda Ercegovic, 1948
• Elachista intermedia var. claviformis Ercegovic, 1948
• Elachista jabukae Ercegovic, 1948
• Elachista jabukae var. mediterranea (G.Furnari) Cormaci & G.Furnari, 2012
• Elachista kuckuckiana Schiffner, 1916 accepted as Elachista intermedia P.L.Crouan & H.M.Crouan, 1867
• Elachista lindaueri V.J.Chapman, 1961
• Elachista lubrica Ruprecht, 1850 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Elachista lumbricalis (Kützing) Hauck, 1883 accepted as Halothrix lumbricalis (Kützing) Reinke, 1888
• Elachista maculaeformis J.Agardh, 1877 accepted as Herponema maculiforme (J.Agardh) Laing, 1930
• Elachista mediterranea G.Furnari, 2010 accepted as Elachista jabukae var. mediterranea (G.Furnari) Cormaci & G.Furnari, 2012
• Elachista meridionalis Skottsberg, 1953
• Elachista minutissima W.R.Taylor, 1928
• Elachista mollis Takamatsu, 1938
• Elachista moniliformis Foslie, 1894 accepted as Myriactula haydenii (Gatty) Levring, 1937
• Elachista neglecta Kuckuck, 1929 accepted as Elachista jabukae var. mediterranea (G.Furnari) Cormaci & G.Furnari, 2012
• Elachista neglecta Liebmann, 1845
• Elachista neglecta subsp. jabukae (Ercegovic) Ercegovic, 1957 accepted as Elachista jabukae Ercegovic, 1948
• Elachista neglecta var. jabukae (Ercegovic) Antolic & Span, 2010
• Elachista nigra Takamatsu, 1938
• Elachista nipponica Umezaki, 1965
• Elachista okamurae Yoshida, 1997
• Elachista orbicularis (Ohta) Skinner, 1983 accepted as Elachista nigra Takamatsu, 1938
• Elachista pulvinata (Kützing) Harvey, 1800 accepted as Myriactula rivulariae (Suhr ex Areschoug) Feldmann, 1937
• Elachista pumila Dugdale, 1971
• Elachista pusilla Skottsberg, 1921 accepted as Myriactula pusilla (Skottsberg) Skottsberg, 1953
• Elachista ramosa Skottsberg, 1907 accepted as Gononema ramosum (Skottsberg) Kuckuck & Skottsberg, 1921
• Elachista rivulariae Suhr ex Areschoug, 1842 accepted as Myriactula rivulariae (Suhr ex Areschoug) Feldmann, 1937
• Elachista rosarioides Skottsberg, 1921 accepted as Myriactula rosarioides (Skottsberg) Feldmann, 1945
• Elachista sadoensis Noda, 1969 accepted as Elachista taeniiformis Yamada, 1928 accepted as Proselachista taeniiformis (Yamada) Y.-P.Lee & Garbary, 2000
• Elachista sargassicola Noda, 1969 accepted as Elachista tenuis Yamada, 1928
• Elachista scutellata Duby, 1830 accepted as Elachista scutulata (Smith) Areschoug, 1843
• Elachista scutulata (Smith) Areschoug, 1843
• Elachista stellaris J.E. Areschoug, 1842
• Elachista stellaris f. chordae (Areschoug) Kjellman, 1880 accepted as Myriactula chordae (Areschoug) Levring, 1937
• Elachista stellaris var. chordae Areschoug, 1875 accepted as Myriactula chordae (Areschoug) Levring, 1937
• Elachista stellulata (Harvey) A.W.Griffiths, 1843 accepted as Myriactula stellulata (Harvey) Levring, 1937
• Elachista taeniiformis Yamada, 1928 accepted as Proselachista taeniiformis (Yamada) Y.-P.Lee & Garbary, 2000
• Elachista tenuis Yamada, 1928
• Elachista vellosa Takamatsu, 1938
• Elachista zosterae Noda, 1971