1. Species Dimya akasakiensis Tashiro & Otsuka, 1980 †
2. Species Dimya alleni H. E. Vokes, 1979 †
3. Species Dimya argentea Dall, 1886
4. Species Dimya bonneti Cossmann, 1902 †
5. Species Dimya californiana S. S. Berry, 1936
6. Species Dimya corrugata Hedley, 1902
7. Species Dimya crearoi Oppenheim, 1900 †
8. Species Dimya deshayesiana Rouault, 1850 †
9. Species Dimya fimbricostata H. E. Vokes, 1979
10. Species Dimya fragilis Koenen, 1893 †
11. Species Dimya grandis Dall, 1896 †
12. Species Dimya hohndorfi Welle, 1998 †
13. Species Dimya japonica Habe, 1971
14. Species Dimya lima Bartsch, 1913
15. Species Dimya maoria A. W. B. Powell, 1937
16. Species Dimya mimula Dall, Bartsch & Rehder, 1938
17. Species Dimya pamplonensis (Carez, 1881) †
18. Species Dimya plana (K. Martin, 1885) †
19. Species Dimya rahkiensis Eames, 1951 †
20. Species Dimya raulini Cossmann & Peyrot, 1914 †
21. Species Dimya rufaripa H. E. Vokes, 1979 †
22. Species Dimya sigillata Tate, 1886 †
23. Species Dimya spondyliformis Eames, 1951 †
24. Species Dimya tenuiplicata (G. Seguenza, 1879) †
25. Species Dimya tigrina Bayer, 1971
26. Species Dimya westonensis P. A. Maxwell, 1978 †
27. Subgenus Dimya (Dimyodon) Munier-Chalmas, 1886 † accepted as Atreta Etallon, 1861 † (unaccepted > junior subjective synonym)
    1. Species Dimya (Dimyodon) schlumbergeri Munier-Chalmas, 1886 † accepted as Atreta schlumbergeri (Munier-Chalmas, 1886) † (unaccepted > superseded combination)
28. Species Dimya acuminata Esteves, 1984 accepted as Dimya fimbricostata H. E. Vokes, 1979
29. Species Dimya argentata Habe, 1951 accepted as Dimya filipina Bartsch, 1913 accepted as Neoatreta filipina (Bartsch, 1913)
30. Species Dimya coralliotis S. S. Berry, 1944 accepted as Dimya californiana S. S. Berry, 1936
31. Species Dimya dissimilis Tate, 1886 † accepted as Neoatreta dissimilis (Tate, 1886) † (unaccepted > superseded combination)
32. Species Dimya extenuiplicata Sacco, 1897 † accepted as Dimya tenuiplicata (G. Seguenza, 1879) †
33. Species Dimya filipina Bartsch, 1913 accepted as Neoatreta filipina (Bartsch, 1913)
34. Species Dimya kaiparaensis Laws, 1944 † accepted as Neoatreta kaiparaensis (Laws, 1944) † (superseded combination)
35. Species Dimya lima Bartsch, 1913 sensu Habe, 1958 accepted as Dimya japonica Habe, 1971 (misapplication)
36. Species Dimya molokaia Dall, Bartsch & Rehder, 1938 accepted as Dimyella molokaia (Dall, Bartsch & Rehder, 1938)
37. Species Dimya radiata Kuroda, 1928 accepted as Neoatreta filipina (Bartsch, 1913)
38. Species Dimya richei Doncieux, 1911 † accepted as Dimya pamplonensis (Carez, 1881) †

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