1. Species Arachnoidiscus ehrenbergii J.W.Bailey ex Ehrenberg
2. Species Arachnoidiscus evanescens (Grunow) N.E.Brown
3. Species Arachnoidiscus indicus Ehrenberg
4. Species Arachnoidiscus ornatus Ehrenberg
5. Species Arachnoidiscus abnormis Brown, 1933 (uncertain > unassessed)
6. Species Arachnoidiscus adamsii Brown, 1933 (uncertain > unassessed)
7. Species Arachnoidiscus antarcticus Brown, 1920 (uncertain > unassessed)
8. Species Arachnoidiscus antiquus Barker & Meakin, 1944 (uncertain > unassessed)
9. Species Arachnoidiscus atlanticus Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
10. Species Arachnoidiscus barbadensis Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
11. Species Arachnoidiscus beringensis Brown, 1933 (uncertain > unassessed)
12. Species Arachnoidiscus cibdelus Brown, 1933 (uncertain > unassessed)
13. Species Arachnoidiscus clarus Brown, 1933 (uncertain > unassessed)
14. Species Arachnoidiscus cognatus Brown, 1933 (uncertain > unassessed)
15. Species Arachnoidiscus confusus Brown, 1933 (uncertain > unassessed)
16. Species Arachnoidiscus decorus Brown, 1933 (uncertain > unassessed)
17. Species Arachnoidiscus deficiens (Grove in Schmidt) Brown, 1933 accepted as Arachnoidiscus ehrenbergii var. deficiens Grove in Schmidt et al., 1890 (uncertain > unassessed)
18. Species Arachnoidiscus ehrenbergii sensu Pantocsek, 1886 (uncertain > unassessed)
19. Species Arachnoidiscus ehrenbergii sensu A. Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
20. Species Arachnoidiscus formosus Walker-Arnott, 1858 (uncertain > unassessed)
21. Species Arachnoidiscus giganteus Pantocsek, 1889 (uncertain > unassessed)
22. Species Arachnoidiscus grevilleanus Hardman ex Greville, 1865 (uncertain > unassessed)
23. Species Arachnoidiscus grevilleanus sensu Schmidt in Schmidt et al., 1882 (uncertain > unassessed)
24. Species Arachnoidiscus hannai Reinhold, 1937 (uncertain > unassessed)
25. Species Arachnoidiscus hungaricus Brown, 1933 (uncertain > unassessed)
26. Species Arachnoidiscus hustedti Reinhold, 1937 (uncertain > unassessed)
27. Species Arachnoidiscus hybridus Brown, 1933 (uncertain > unassessed)
28. Species Arachnoidiscus indicus Greville (uncertain > unassessed)
29. Species Arachnoidiscus indicus sensu A. Schmidt in Schmidt et al., 1882 (uncertain > unassessed)
30. Species Arachnoidiscus indicus sensu Witt, 1885 (uncertain > unassessed)
31. Species Arachnoidiscus indicus sensu Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
32. Species Arachnoidiscus interruptus Barker & Meakin, 1946 (uncertain > unassessed)
33. Species Arachnoidiscus japonicus Shadboldt ex Pritchard, 1852 (uncertain > unassessed)
34. Species Arachnoidiscus japonicus Ehrenberg, 1873 (uncertain > unassessed)
35. Species Arachnoidiscus lepidus Brown, 1933 (uncertain > unassessed)
36. Species Arachnoidiscus longii Brown, 1933 (uncertain > unassessed)
37. Species Arachnoidiscus magister Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
38. Species Arachnoidiscus magnificus Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
39. Species Arachnoidiscus major Brown, 1933 (uncertain > unassessed)
40. Species Arachnoidiscus manni Hanna & Grant, 1926 (uncertain > unassessed)
41. Species Arachnoidiscus maunii ‘Hollerbakh & Krasavina', 1971 (uncertain > unassessed)
42. Species Arachnoidiscus millsi Reinhold, 1937 (uncertain > unassessed)
43. Species Arachnoidiscus montereyana (A. Schmidt) Chase, 1885 accepted as Arachnoidiscus ehrenbergii var. montereyana Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
44. Species Arachnoidiscus nicobaricus Ehrenberg, 1854 (uncertain > unassessed)
45. Species Arachnoidiscus oamaruensis (A. Schmidt) Brown, 1933 accepted as Arachnoidiscus ehrenbergii var. oamaruensis Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
46. Species Arachnoidiscus ornatus Janisch, 1862 (uncertain > unassessed)
47. Species Arachnoidiscus parvulus Bailey (uncertain > unassessed)
48. Species Arachnoidiscus parvus ‘J.W. Bailey' according to Chase, 1885 (uncertain > unassessed)
49. Species Arachnoidiscus primordialis Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
50. Species Arachnoidiscus rajui Singh, Vimal & Nautiyal, 1978 (uncertain > unassessed)
51. Species Arachnoidiscus rossicus Pantocsek, 1905 (uncertain > unassessed)
52. Species Arachnoidiscus russicus Pantocsek, 1889 (uncertain > unassessed)
53. Species Arachnoidiscus sastryi Singh, Vimal & Nautiyal, 1978 (uncertain > unassessed)
54. Species Arachnoidiscus schmidti Hajós, 1976 (uncertain > unassessed)
55. Species Arachnoidiscus sendaicus N.E.Brown, 1933 (uncertain > unassessed)
56. Species Arachnoidiscus simbirscianus Pantocsek, 1892 (uncertain > unassessed)
57. Species Arachnoidiscus simbirskianus Pantocsek, 1892 (uncertain > unassessed)
58. Species Arachnoidiscus similis Brown, 1933 (uncertain > unassessed)
59. Species Arachnoidiscus sokoli Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
60. Species Arachnoidiscus spissus Brown, 1933 (uncertain > unassessed)
61. Species Arachnoidiscus splendens (Brun) Brown, 1933 accepted as Arachnoidiscus ehrenbergii var. splendens Brun, 1896 (uncertain > unassessed)
62. Species Arachnoidiscus stictodiscoides Hanna, Hendey & Brigger, 1976 (uncertain > unassessed)
63. Species Arachnoidiscus talukdari Singh, Vimal & Nautiyal, 1978 (uncertain > unassessed)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License