1. Species Ptychotrema (Ptychotrema) columellaris (E. von Martens, 1876) accepted as Ptychotrema columellare (E. von Martens, 1876) (incorrect grammatical agreement of specific epithet)
2. Species Ptychotrema (Ptychotrema) degneri Bequaert & Clench, 1936 accepted as Ptychotrema degneri Bequaert & Clench, 1936 (unaccepted > superseded combination)
3. Species Ptychotrema (Ptychotrema) tullbergi (d'Ailly, 1896) accepted as Ptychotrema anceyi (G. Nevill, 1890) (unaccepted > junior subjective synonym)
4. Species Ptychotrema (Ptychotrema) columellare (E. von Martens, 1876) represented as Ptychotrema columellare (E. von Martens, 1876)
5. Species Ptychotrema (Ptychotrema) complicatum (E. von Martens, 1876) represented as Ptychotrema complicatum (E. von Martens, 1876)
6. Species Ptychotrema (Ptychotrema) cyathostomum (L. Pfeiffer, 1855) represented as Ptychotrema cyathostomum (L. Pfeiffer, 1856)
7. Species Ptychotrema (Ptychotrema) deruptum Degner, 1934 represented as Ptychotrema deruptum Degner, 1934
8. Species Ptychotrema (Ptychotrema) gelegelei Oke & Alohan, 2003 represented as Ptychotrema gelegelei Oke & Alohan, 2003
9. Species Ptychotrema (Ptychotrema) glyptothauma Connolly, 1928 represented as Ptychotrema glyptothauma Connolly, 1928
10. Species Ptychotrema (Ptychotrema) gratum Thiele, 1933 represented as Ptychotrema gratum Thiele, 1933
11. Species Ptychotrema (Ptychotrema) liberianum Degner, 1934 represented as Ptychotrema liberianum Degner, 1934
12. Species Ptychotrema (Ptychotrema) martensi (d'Ailly, 1896) represented as Ptychotrema martensi (d'Ailly, 1896)
13. Species Ptychotrema (Ptychotrema) moerchi (L. Pfeiffer, 1853) represented as Ptychotrema moerchi (L. Pfeiffer, 1853)
14. Species Ptychotrema (Ptychotrema) mucronatum (E. von Martens, 1876) represented as Ptychotrema mucronatum (E. von Martens, 1876)
15. Species Ptychotrema (Ptychotrema) pupaeforme (Morelet, 1866) represented as Ptychotrema pupaeforme (Morelet, 1866)
16. Species Ptychotrema (Ptychotrema) ringens (H. Adams, 1870) represented as Ptychotrema ringens (H. Adams, 1870)
17. Species Ptychotrema (Ptychotrema) ringicula (Morelet, 1867) represented as Ptychotrema ringicula (Morelet, 1867)
18. Species Ptychotrema (Ptychotrema) roberti (Preston, 1910) represented as Ptychotrema roberti (Preston, 1910)
19. Species Ptychotrema (Ptychotrema) shagamuense Odiete & Oke, 1996 represented as Ptychotrema shagamuense Oke & Odiete, 1996
20. Species Ptychotrema (Ptychotrema) sulciferum (Morelet, 1884) represented as Ptychotrema sulciferum (Morelet, 1884)
21. Species Ptychotrema (Ptychotrema) tanganyikae Adam, van Bruggen & Van Goethem, 1995 represented as Ptychotrema tanganyikae Adam, van Bruggen & Van Goethem, 1995

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