1. Subgenus Tyrannophaedusa (Aulacophaedusa) T. Habe, 1958 accepted as Megalophaedusa (Aulacophaedusa) T. Habe, 1958 represented as Megalophaedusa O. Boettger, 1877
   1. Species Tyrannophaedusa (Aulacophaedusa) aulacophora (Pilsbry, 1900) accepted as Megalophaedusa aulacophora (Pilsbry, 1900) (unaccepted combination)
   2. Species Tyrannophaedusa (Aulacophaedusa) gracilispira (Möllendorff, 1882) accepted as Megalophaedusa (Aulacophaedusa) gracilispira (Möllendorff, 1882) represented as Megalophaedusa gracilispira (Möllendorff, 1882) (unaccepted combination)
   3. Species Tyrannophaedusa (Aulacophaedusa) matsumurai Minato, 2014 accepted as Megalophaedusa matsumurai (Minato, 2014) (original combination)
   4. Species Tyrannophaedusa (Aulacophaedusa) morisakii (Kuroda & Abe, 1980) accepted as Megalophaedusa (Aulacophaedusa) morisakii (Kuroda & Abe, 1980) represented as Megalophaedusa morisakii (Kuroda & Habe, 1980) (unaccepted combination)
2. Subgenus Tyrannophaedusa (Decolliphaedusa) Azuma, 1982 accepted as Decolliphaedusa Azuma, 1982 accepted as Megalophaedusa (Tyrannophaedusa) Pilsbry, 1900 represented as Megalophaedusa O. Boettger, 1877
   1. Species Tyrannophaedusa (Decolliphaedusa) abei Kuroda, 1980 accepted as Megalophaedusa ignobilis (Sykes, 1895) (junior synonym)
3. Subgenus Tyrannophaedusa (Tosaphaedusa) Ehrmann, 1929 accepted as Tosaphaedusa Ehrmann, 1929
   1. Species Tyrannophaedusa (Tosaphaedusa) cincticollis (Ehrmann, 1900) accepted as Tosaphaedusa cincticollis (Ehrmann, 1900) (unaccepted combination)
4. Subgenus Tyrannophaedusa (Tyrannophaedusa) Pilsbry, 1900 accepted as Megalophaedusa (Tyrannophaedusa) Pilsbry, 1900 represented as Megalophaedusa O. Boettger, 1877 (unaccepted > superseded combination)
   1. Species Tyrannophaedusa (Tyrannophaedusa) aurantiaca (O. Boettger, 1877) accepted as Megalophaedusa (Tyrannophaedusa) aurantiaca (O. Boettger, 1877) represented as Megalophaedusa aurantiaca (O. Boettger, 1877) (unaccepted combination)
   2. Species Tyrannophaedusa (Tyrannophaedusa) bilabrata (E. A. Smith, 1876) accepted as Megalophaedusa (Tyrannophaedusa) bilabrata (E. A. Smith, 1876) represented as Megalophaedusa bilabrata (E. A. Smith, 1876) (unaccepted combination)
   3. Species Tyrannophaedusa (Tyrannophaedusa) dalli (Pilsbry, 1902) accepted as Megalophaedusa dalli (Pilsbry, 1902) (unaccepted combination)
   4. Species Tyrannophaedusa (Tyrannophaedusa) fukudainadai Minato, 2014 accepted as Megalophaedusa fukudainadai (Minato, 2014) (original combination)
   5. Species Tyrannophaedusa (Tyrannophaedusa) iotaptyx (Pilsbry, 1900) accepted as Megalophaedusa iotaptyx (Pilsbry, 1900) (unaccepted > superseded combination)
   6. Species Tyrannophaedusa (Tyrannophaedusa) kanjiookuboi (Minato, 1980) accepted as Megalophaedusa kanjiookuboi (Minato, 1980) (unaccepted combination)
   7. Species Tyrannophaedusa (Tyrannophaedusa) mikado (Pilsbry, 1900) accepted as Megalophaedusa mikado (Pilsbry, 1900) (unaccepted > superseded combination)
   8. Species Tyrannophaedusa (Tyrannophaedusa) moellendorffi H. Nordsieck, 2003 accepted as Megalophaedusa (Tyrannophaedusa) moellendorffi (H. Nordsieck, 2003) represented as Megalophaedusa moellendorffi (H. Nordsieck, 2003) (unaccepted combination)
   9. Species Tyrannophaedusa (Tyrannophaedusa) nankaidoensis Kuroda, 1955 accepted as Megalophaedusa (Tyrannophaedusa) nankaidoensis (Kuroda, 1955) represented as Megalophaedusa nankaidoensis (Kuroda, 1955) (unaccepted combination)
   10. Species Tyrannophaedusa (Tyrannophaedusa) oxycyma (Pilsbry, 1901) accepted as Megalophaedusa (Tyrannophaedusa) oxycyma (Pilsbry, 1902) represented as Megalophaedusa oxycyma (Pilsbry, 1902) (unaccepted combination)
   11. Species Tyrannophaedusa (Tyrannophaedusa) pilsbryana (Ancey, 1904) accepted as Megalophaedusa (Tyrannophaedusoides) pilsbryana (Ancey, 1904) represented as Megalophaedusa pilsbryana (Ancey, 1904) (unaccepted combination)
   12. Species Tyrannophaedusa (Tyrannophaedusa) platyderula (Pilsbry, 1903) accepted as Megalophaedusa (Ventriphaedusa) platyderula (Pilsbry, 1903) represented as Megalophaedusa platyderula (Pilsbry, 1903) (unaccepted combination)
   13. Species Tyrannophaedusa (Tyrannophaedusa) plicilabris (A. Adams, 1868) accepted as Megalophaedusa (Tyrannophaedusa) plicilabris (A. Adams, 1868) represented as Megalophaedusa plicilabris (A. Adams, 1868) (unaccepted combination)
   14. Species Tyrannophaedusa (Tyrannophaedusa) proba (A. Adams, 1868) accepted as Megalophaedusa proba (A. Adams, 1868) (unaccepted combination)
   15. Species Tyrannophaedusa (Tyrannophaedusa) surugensis (Pilsbry, 1901) accepted as Megalophaedusa (Tyrannophaedusa) surugensis (Pilsbry, 1902) represented as Megalophaedusa surugensis (Pilsbry, 1902) (unaccepted combination)
   16. Species Tyrannophaedusa (Tyrannophaedusa) tanegashimae (Pilsbry, 1901) accepted as Megalophaedusa (Tyrannophaedusa) tanegashimae (Pilsbry, 1901) represented as Megalophaedusa tanegashimae (Pilsbry, 1901) (unaccepted combination)
   17. Species Tyrannophaedusa (Tyrannophaedusa) tosaensis (Pilsbry, 1903) accepted as Megalophaedusa tosaensis (Pilsbry, 1903) (unaccepted > superseded combination)
5. Species Tyrannophaedusa iyoensis Minato & Tada, 1977 accepted as Megalophaedusa (Tyrannophaedusa) iyoensis (Minato & Tada, 1977) represented as Megalophaedusa iyoensis (Minato & Tada, 1977) (original combination)
6. Species Tyrannophaedusa kanjiookuboi Minato, 1980 accepted as Megalophaedusa (Tyrannophaedusa) kanjiookuboi (Minato, 1980) represented as Megalophaedusa kanjiookuboi (Minato, 1980) (original combination)
7. Species Tyrannophaedusa kawamotoi Kuroda & Iw. Taki, 1944 accepted as Megalophaedusa kawamotoi (Kuroda & Iw. Taki, 1944) (original combination)
8. Species Tyrannophaedusa miyazakii Minato & Tada, 1977 accepted as Megalophaedusa miyazakii (Minato & Tada, 1977)
9. Species Tyrannophaedusa moellendorffi H. Nordsieck, 2003 accepted as Megalophaedusa moellendorffi (H. Nordsieck, 2003) (replacement name for Clausilia aurantiaca var. erberi Möllendorff 1885 [non Frauenfeld 1867])
10. Species Tyrannophaedusa nankaidoensis Kuroda, 1955 accepted as Megalophaedusa nankaidoensis (Kuroda, 1955) (original combination)
11. Species Tyrannophaedusa sugimotonis Minato & Tada, 1978 accepted as Megalophaedusa sugimotonis (Minato & Tada, 1978) (original combination)

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