1. Species Pterocyclus gerlachi Möllendorff, 1882
2. Species Pterocyclus aborensis Godwin-Austen, 1915 accepted as Pterocyclos aborensis Godwin-Austen, 1915 (misspelled generic name)
3. Species Pterocyclus albersi L. Pfeiffer, 1847 accepted as Pterocyclos albersi L. Pfeiffer, 1847 accepted as Crossopoma albersi (L. Pfeiffer, 1847) (misspelled generic name)
4. Species Pterocyclus anguliferus (Souleyet, 1841) accepted as Pterocyclos anguliferus (Souleyet, 1841) (incorrect spelling of generic name)
5. Species Pterocyclus aspersus Bullen, 1906 accepted as Pterocyclos aspersus Bullen, 1906 (incorrect spelling of genus name)
6. Species Pterocyclus ater Stoliczka, 1871 accepted as Pterocyclos ater Stoliczka, 1871 (incorrect spelling of generic name)
7. Species Pterocyclus aureus (Heude, 1885) accepted as Pterocyclos aureus (Heude, 1885) (incorrect spelling of generic name)
8. Species Pterocyclus bathyschisma Möllendorff, 1898 accepted as Pterocyclos bathyschisma Möllendorff, 1898 accepted as Ptychopoma bathyschisma (Möllendorff, 1898) (incorrect spelling of genus name)
9. Species Pterocyclus berthae Dautzenberg & Hamonville, 1887 accepted as Pterocyclos berthae Dautzenberg & Hamonville, 1887 (incorrect spelling of generic name)
10. Species Pterocyclus bifrons L. Pfeiffer, 1855 accepted as Pterocyclos bifrons L. Pfeiffer, 1855 (incorrect spelling of generic name)
11. Species Pterocyclus bilabiatus W. H. Benson, 1835 accepted as Pterocyclos bilabiatus W. H. Benson, 1835 (misspelled generic name)
12. Species Pterocyclus blandi W. H. Benson, 1851 accepted as Pterocyclos blandi W. H. Benson, 1851 (incorrect spelling of genus name)
13. Species Pterocyclus brahmakundensis Godwin-Austen, 1915 accepted as Pterocyclos brahmakundensis Godwin-Austen, 1915 (misspelled generic name)
14. Species Pterocyclus celebensis (E. A. Smith, 1896) accepted as Pterocyclos celebensis (E. A. Smith, 1896) (incorrect spelling of generic name)
15. Species Pterocyclus cetra W. H. Benson, 1856 accepted as Pterocyclos cetra W. H. Benson, 1856 (incorrect spelling of generic name)
16. Species Pterocyclus chinensis Möllendorff, 1874 accepted as Ptychopoma chinense (Möllendorff, 1874) (original combination)
17. Species Pterocyclus cingalensis W. H. Benson, 1853 accepted as Pterocyclos cingalensis W. H. Benson, 1853 (incorrect spelling of generic name)
18. Species Pterocyclus comatus R. H. Beddome, 1881 accepted as Pterocyclos comatus R. H. Beddome, 1881 (spelling of generic name incorrect)
19. Species Pterocyclus comitus Möllendorff, 1897 accepted as Pterocyclos comatus R. H. Beddome, 1881 (misspelling of original species name, Pterocyclos comatus Beddome, 1881)
20. Species Pterocyclus cucullus Godwin-Austen, 1889 accepted as Pterocyclos cucullus Godwin-Austen, 1889 (incorrect spelling of generic name)
21. Species Pterocyclus cumingi L. Pfeiffer, 1851 accepted as Pterocyclos cumingi L. Pfeiffer, 1851 (incorrect spelling of generic name)
22. Species Pterocyclus cyclophoroideus G. Nevill, 1881 accepted as Pterocyclos cyclophoroideus G. Nevill, 1881 (misspelled generic name)
23. Species Pterocyclus eudaedaleus Crosse, 1869 accepted as Pterocyclos eudaedaleus Crosse, 1869 (incorrect spelling of generic name)
24. Species Pterocyclus feddeni W. T. Blanford, 1865 accepted as Pterocyclos feddeni W. T. Blanford, 1865 (incorrect spelling of generic name)
25. Species Pterocyclus fischerianus Morlet, 1885 accepted as Ptychopoma fischerianum (Morlet, 1885) (original combination)
26. Species Pterocyclus fruhstorferi Kobelt, 1909 accepted as Rhiostoma prestoni (Bavay & Dautzenberg, 1909) (unaccepted > junior subjective synonym)
27. Species Pterocyclus insignis Theobald, 1865 accepted as Pterocyclos insignis Theobald, 1865 (incorrect spelling of generic name)
28. Species Pterocyclus kintanum (de Morgan, 1885) accepted as Pterocyclos kintanum (de Morgan, 1885) (incorrect spelling of genus name)
29. Species Pterocyclus latilabrum E. A. Smith, 1895 accepted as Pterocyclos latilabrum E. A. Smith, 1895 (incorrect spelling of generic name)
30. Species Pterocyclus magnus Godwin-Austen, 1876 accepted as Pterocyclos magnus Godwin-Austen, 1876 (misspelled generic name)
31. Species Pterocyclus marionae Preston, 1914 accepted as Pterocyclos marionae Preston, 1914 (original combination)
32. Species Pterocyclus miriensis Preston, 1914 accepted as Pterocyclos marionae Preston, 1914 (misspelled generic name)
33. Species Pterocyclus moellendorffi Kobelt, 1909 accepted as Pterocyclos moellendorffi Kobelt, 1909 (incorrect spelling of genus name)
34. Species Pterocyclus moluccensis Kobelt, 1897 accepted as Pterocyclos moluccensis Kobelt, 1897 (incorrect subsequent spelling)
35. Species Pterocyclus nanus W. H. Benson, 1851 accepted as Pterocyclos nanus W. H. Benson, 1851 (misspelled generic name)
36. Species Pterocyclus niahensis Godwin-Austen, 1889 accepted as Pterocyclos niahensis Godwin-Austen, 1889 (incorrect spelling of generic name)
37. Species Pterocyclus parvus (Pearson, 1833) accepted as Pterocyclos parvus (Pearson, 1833) accepted as Spiraculum parvum Pearson, 1833 (unaccepted > misspelling - incorrect subsequent spelling, misspelled generic name)
38. Species Pterocyclus perrieri Morlet, 1889 accepted as Pterocyclos perrieri Morlet, 1889 (incorrect spelling of generic name)
39. Species Pterocyclus prestoni Bavay & Dautzenberg, 1909 accepted as Pterocyclos prestoni Bavay & Dautzenberg, 1909 accepted as Rhiostoma prestoni (Bavay & Dautzenberg, 1909)
40. Species Pterocyclus pseudocumingi Möllendorff, 1897 accepted as Pterocyclos pseudocumingi Möllendorff, 1897 (misspelled generic name)
41. Species Pterocyclus pullatus W. H. Benson, 1856 accepted as Pterocyclos pullatus W. H. Benson, 1856 (incorrect spelling of generic name)
42. Species Pterocyclus regelspergeri (de Morgan, 1885) accepted as Spiraculum regelspergeri (de Morgan, 1885)
43. Species Pterocyclus rupestris W. H. Benson, 1832 accepted as Pterocyclos rupestris W. H. Benson, 1832 (original combination)
44. Species Pterocyclus schmackeri Möllendorff, 1897 accepted as Pterocyclos schmackeri Möllendorff, 1897 (incorrect spelling of genus name)
45. Species Pterocyclus sluiteri O. Boettger, 1890 accepted as Pterocyclos sluiteri O. Boettger, 1890
46. Species Pterocyclus spiramentum Godwin-Austen, 1915 accepted as Pterocyclos spiramentum Godwin-Austen, 1915 (misspelled generic name)
47. Species Pterocyclus subulatus Sykes, 1903 accepted as Pterocyclos subalatus Sykes, 1903 (unaccepted > misspelling - incorrect subsequent spelling, incorrect spelling of genus and species name)
48. Species Pterocyclus sumatranus E. von Martens, 1867 accepted as Cyclotus sumatranus (E. von Martens, 1864) (unaccepted combination)
49. Species Pterocyclus tenuilabiatus (Metcalfe, 1852) accepted as Pterocyclos tenuilabiatus (Metcalfe, 1852) (incorrect spelling of generic name)
50. Species Pterocyclus troscheli W. H. Benson, 1851 accepted as Pterocyclos troscheli W. H. Benson, 1851 (incorrect spelling of generic name)
51. Species Pterocyclus vanbuensis E. A. Smith, 1896 accepted as Scabrina vanbuensis (E. A. Smith, 1896) (incorrect spelling of genus name; original combination)

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