1. Species Fallacia decussata Yu H.Li & Hidek.Suzuki, 2015
2. Species Fallacia dissipatoides (Hustedt) D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
3. Species Fallacia fawensis Al–Handal, Al–Shaheen, Al–Saedy & Wulff, 2022
4. Species Fallacia floriniae (M.Moeller) A.Witkowski
5. Species Fallacia miyajimensis Yuhang Li & Hidek. Suzuki, 2019
6. Species Fallacia nodulifera Yuhang Li & Hidek. Suzuki, 2019
7. Species Fallacia pygmaea (Kützing) A.J.Stickle & D.G.Mann, 1990
8. Species Fallacia similigemmifera Yuhang Li & Hidek. Suzuki, 2019
9. Species Fallacia aequorea (Hustedt) Mann, 1990 accepted as Navicula aequorea Hustedt, 1939 (uncertain > unassessed)
10. Species Fallacia amphipleuroides (Hustedt) D.G.Mann, 1990 accepted as Navicula amphipleuroides Hustedt, 1955 (uncertain > unassessed)
11. Species Fallacia arenaria K.Sabbe & W.Vyverman, 1999 (uncertain > unassessed)
12. Species Fallacia auriculata (Hustedt) D.G.Mann, 1990 accepted as Navicula auriculata Hustedt, 1944 (uncertain > unassessed)
13. Species Fallacia balnearis (Grunow) A.Witkowski, H.Lange-Bertalot & D.Metzeltin, 2000 accepted as Navicula pygmaea var. balnearis Grunow, 1880 (uncertain > unassessed)
14. Species Fallacia bioculata (Grunow ex A.Schmidt) D.G.Mann, 1990 accepted as Navicula bioculata var. bioculata Grunow in Schmidt et al., 1881 (uncertain > unassessed)
15. Species Fallacia brachium (Hustedt) D.G.Mann, 1990 accepted as Navicula brachium Hustedt, 1944 (uncertain > unassessed)
16. Species Fallacia carpentariae Hallegraeff & Burford, 1996 (uncertain > unassessed)
17. Species Fallacia cassubiae Witkowski, 1991 (uncertain > unassessed)
18. Species Fallacia clepsidroides Witkowski (uncertain > unassessed)
19. Species Fallacia clipeiformis (D.König) D.G.Mann, 1990 accepted as Navicula clipeiformis D.König, 1959 (uncertain > unassessed)
20. Species Fallacia costericardii Gerd Moser (uncertain > unassessed)
21. Species Fallacia crassicostata H. Lange-Bertalot & M. Werum in Werum & Lange-Bertalot, 2004 (uncertain > unassessed)
22. Species Fallacia cryptolyra (Brockmann) Stickle & Mann, 1990 accepted as Navicula cryptolyra Brockmann, 1950 (uncertain > unassessed)
23. Species Fallacia cunoniae (Cholnoky) Witkowski, Lange-Bertalot & Metzeltin, 2000 accepted as Navicula cunoniae Cholnoky, 1963 (uncertain > unassessed)
24. Species Fallacia diploneoides (Hustedt) Mann in Round, Crawford & Mann, 1990 (uncertain > unassessed)
25. Species Fallacia dithmarsica (König ex Hustedt) Mann, 1990 accepted as Navicula dithmarsica König ex Hustedt, 1964 (uncertain > unassessed)
26. Species Fallacia ecuadoriana H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000 (uncertain > unassessed)
27. Species Fallacia egregia (Hustedt) D.G.Mann, 1990 accepted as Navicula egregia f. egregia Hustedt, 1942 (uncertain > unassessed)
28. Species Fallacia emmae Van de Vijver & E.J.Cox, 2015 accepted as Germainiella emmae (Van de Vijver & Cox) Kociolek, You, R.Lowe & Q.Wang in Kociolek et al., 2019 (uncertain > unassessed)
29. Species Fallacia enigmata (Germain) H. Lange-Bertalot & Werum in Werum & Lange-Bertalot, 2004 accepted as Navicula enigmatica Germain, 1980 (uncertain > unassessed)
30. Species Fallacia escorialis (R.Simonsen) K.Sabbe & W.Vyverman, 1999 accepted as Navicula escorialis R.Simonsen, 1959 (uncertain > unassessed)
31. Species Fallacia fenestrella (Hustedt) D.G.Mann, 1990 accepted as Navicula fenestrella Hustedt, 1955 (uncertain > unassessed)
32. Species Fallacia florinae (M.Møller) Witkowski, 1993 accepted as Navicula florinae Møller, 1950 (uncertain > unassessed)
33. Species Fallacia forcipata (Greville) Stickle & Mann, 1990 accepted as Navicula forcipata f. forcipata Greville, 1859 (uncertain > unassessed)
34. Species Fallacia fracta (Hustedt ex Simonsen) D.G.Mann, 1990 accepted as Navicula fracta Hustedt, 1987 (uncertain > unassessed)
35. Species Fallacia frustulum (Hustedt) D.G.Mann, 1990 accepted as Navicula frustulum Hustedt, 1945 (uncertain > unassessed)
36. Species Fallacia gemmifera (R.Simonsen) D.G.Mann, 1990 accepted as Navicula gemmifera R.Simonsen, 1960 (uncertain > unassessed)
37. Species Fallacia gusliakovi Kovtun, 2008 (uncertain > unassessed)
38. Species Fallacia helensis (Schulz) D.G.Mann, 1990 accepted as Navicula helensis Schulz, 1926 (uncertain > unassessed)
39. Species Fallacia hudsonis (Grunow ex Cleve) Stickle & Mann, 1990 accepted as Navicula hudsonis Grunow, 1891 (uncertain > unassessed)
40. Species Fallacia hummii (Hustedt) D.G.Mann, 1990 accepted as Navicula hummii Hustedt, 1955 (uncertain > unassessed)
41. Species Fallacia hyalinula (De Toni) Stickle & Mann, 1990 accepted as Navicula hyalinula De Toni, 1891 (uncertain > unassessed)
42. Species Fallacia inattingens (R.Simonsen) D.G.Mann, 1990 accepted as Navicula inattingens R.Simonsen, 1959 (uncertain > unassessed)
43. Species Fallacia indifferens (Hustedt) D.G.Mann, 1990 accepted as Navicula indifferens Hustedt, 1942 (uncertain > unassessed)
44. Species Fallacia inscriptura (Hendey) Witkowski, 2000 accepted as Navicula inscriptura Hendey, 1977 (uncertain > unassessed)
45. Species Fallacia insociabilis (Krasske) D.G.Mann, 1990 accepted as Navicula insociabilis var. insociabilis Krasske, 1932 (uncertain > unassessed)
46. Species Fallacia lange-bertalotii (E.Reichardt) E.Reichardt, 2000 (uncertain > unassessed)
47. Species Fallacia lenzii (Hustedt) Lange-Bertalot, 2004 accepted as Navicula lenzii Hustedt, 1936 (uncertain > unassessed)
48. Species Fallacia litoricola (Hustedt) D.G.Mann, 1990 accepted as Navicula litoricola Hustedt, 1955 (uncertain > unassessed)
49. Species Fallacia losevae Lange-Bertalot, Genkal & Vekhov, 2004 (uncertain > unassessed)
50. Species Fallacia lucens (Hustedt ex Salah) D.G.Mann, 1990 accepted as Navicula lucens Hustedt, 1942 (uncertain > unassessed)
51. Species Fallacia lucinensis (Hustedt) D.G.Mann, 1990 accepted as Navicula lucinensis Hustedt, 1950 (uncertain > unassessed)
52. Species Fallacia maceria (Schimanski) Lange-Bertalot, 1996 accepted as Navicula maceria Schimanski, 1978 (uncertain > unassessed)
53. Species Fallacia margino-punctata K.Sabbe & W.Vyverman, 1999 (uncertain > unassessed)
54. Species Fallacia marnieri (Manguin) A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 accepted as Navicula marnieri Manguin, 1957 (uncertain > unassessed)
55. Species Fallacia melanocephala (Giffen) Witkowski, 2000 accepted as Navicula melanocephala Giffen, 1975 (uncertain > unassessed)
56. Species Fallacia meridionalis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain > unassessed)
57. Species Fallacia minima (Østrup) Witkowski accepted as Navicula forcipata var. minima Østrup, 1895 (uncertain > unassessed)
58. Species Fallacia mirabilis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain > unassessed)
59. Species Fallacia mitis (Hustedt) D.G.Mann, 1990 accepted as Navicula mitis Hustedt, 1945 (uncertain > unassessed)
60. Species Fallacia monoculata (Hustedt) D.G.Mann, 1990 accepted as Navicula monoculata Hustedt, 1945 (uncertain > unassessed)
61. Species Fallacia naumannii (Hustedt) D.G.Mann, 1990 accepted as Navicula naumanni Hustedt, 1942 (uncertain > unassessed)
62. Species Fallacia nicobarica (Grunow) Witkowski accepted as Navicula nicobarica Grunow, 1863 (uncertain > unassessed)
63. Species Fallacia nummularia (Greville) D.G.Mann, 1990 accepted as Navicula nummularia Greville, 1859 (uncertain > unassessed)
64. Species Fallacia ny (Cleve) D.G.Mann, 1990 accepted as Navicula ny Cleve, 1894 (uncertain > unassessed)
65. Species Fallacia nyella (Hustedt) D.G.Mann, 1990 accepted as Navicula nyella Hustedt, 1964 (uncertain > unassessed)
66. Species Fallacia ochridana (Hustedt) Z.Levkov & S.Krstic, 2007 accepted as Navicula ochridana Hustedt, 1945 (uncertain > unassessed)
67. Species Fallacia oculiformis (Hustedt) D.G.Mann, 1990 accepted as Navicula oculiformis Hustedt, 1955 (uncertain > unassessed)
68. Species Fallacia omissa (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
69. Species Fallacia perlucida (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
70. Species Fallacia plathii (Brockmann) Snoeijs in Snoeijs & Balashova, 1998 accepted as Navicula plathi Brockmann, 1950 (uncertain > unassessed)
71. Species Fallacia pseudoforcipata (Hustedt) D.G.Mann, 1990 accepted as Navicula pseudoforcipata Hustedt, 1942 (uncertain > unassessed)
72. Species Fallacia pseudolitoricola (Håkansson) Håkansson in Snoeijs & Vilbaste, 1994 accepted as Navicula pseudolitoricola Hakansson, 1980 (uncertain > unassessed)
73. Species Fallacia pseudomitis (Hustedt) D.G.Mann, 1990 accepted as Navicula pseudomitis Hustedt, 1950 (uncertain > unassessed)
74. Species Fallacia pseudomuralis (Hustedt) Mann, 1990 (uncertain > unassessed)
75. Species Fallacia pseudony (Hustedt) D.G.Mann, 1990 accepted as Navicula pseudony Hustedt, 1955 (uncertain > unassessed)
76. Species Fallacia pseudosemilyrata (R.Simonsen) D.G.Mann, 1990 accepted as Navicula pseudosemilyrata R.Simonsen, 1959 (uncertain > unassessed)
77. Species Fallacia pulchella K.Sabbe & K.Muylaert, 1999 (uncertain > unassessed)
78. Species Fallacia pygmaea H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito, 2003 (uncertain > unassessed)
79. Species Fallacia pygmaeformis (H.Kobayasi) Y.Fugita & T.Ohtsuka, 2005 accepted as Navicula pygmaeformis Kobayasi, 1968 (uncertain > unassessed)
80. Species Fallacia reichardtii (Grunow) A. Witkowski, H. Lange-Bertalot & D.Metzeltin, 2000 accepted as Navicula reichardtii Grunow, 1880 (uncertain > unassessed)
81. Species Fallacia reissii (J.J. Lee, C.W. Reimer & M.E. McEnery) G.M. Hallegraeff & M.A. Burford, 1996 accepted as Navicula reissii Lee, Reimer & McEnery, 1980 (uncertain > unassessed)
82. Species Fallacia scaldensis K.Sabbe & K.Muylaert, 1999 (uncertain > unassessed)
83. Species Fallacia schaeferae (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
84. Species Fallacia schoemaniana (Foged) Witkowski accepted as Navicula schoemaniana Foged, 1975 (uncertain > unassessed)
85. Species Fallacia semilyrata (R.Simonsen) D.G.Mann, 1990 accepted as Navicula semilyrata R.Simonsen, 1959 (uncertain > unassessed)
86. Species Fallacia solutepunctata (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
87. Species Fallacia spatiata (Østrup) Witkowski accepted as Navicula forcipata var. spatiata Østrup, 1895 (uncertain > unassessed)
88. Species Fallacia standeriella (Archibald) D.G.Mann, 1990 accepted as Navicula standeriella Archibald, 1966 (uncertain > unassessed)
89. Species Fallacia subforcipata (Hustedt) D.G.Mann, 1990 accepted as Navicula subforcipata Hustedt, 1964 (uncertain > unassessed)
90. Species Fallacia subhamulata (Grunow) D.G.Mann, 1990 accepted as Navicula subhamulata var. subhamulata Grunow in Van Heurck, 1880 (uncertain > unassessed)
91. Species Fallacia sublucidula (Hustedt) Mann, 1990 accepted as Navicula sublucidula Hustedt, 1950 (uncertain > unassessed)
92. Species Fallacia submitis (Hustedt) D.G.Mann, 1990 accepted as Navicula submitis Hustedt, 1945 (uncertain > unassessed)
93. Species Fallacia subsulcatoides (Hustedt) D.G.Mann, 1990 accepted as Navicula subsulcatoides Hustedt, 1987 (uncertain > unassessed)
94. Species Fallacia suspirii (Cholnoky) Witkowski accepted as Navicula suspirii Cholnoky, 1961 (uncertain > unassessed)
95. Species Fallacia tenera (Hustedt) D.G.Mann, 1990 accepted as Navicula tenera Hustedt, 1936 (uncertain > unassessed)
96. Species Fallacia teneroides (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
97. Species Fallacia tenerrima (Hustedt) D.G.Mann, 1990 (uncertain > unassessed)
98. Species Fallacia tschuktschorum Pienitz, Fedje & Poulin accepted as Navicula tschuktschorum Cleve, 1883 (uncertain > unassessed)
99. Species Fallacia umpatica (Cholnoky) D.G.Mann, 1990 accepted as Navicula umpatica Cholnoky, 1968 (uncertain > unassessed)
100. Species Fallacia versicolor (Hustedt) D.G.Mann, 1990 accepted as Navicula versicolor Grunow, 1874 (uncertain > unassessed)
101. Species Fallacia veterana (Hustedt) D.G.Mann, 1990 accepted as Navicula veterana Hustedt, 1987 (uncertain > unassessed)
102. Species Fallacia vitrea (Østrup) D.G.Mann, 1990 accepted as Frustulia vitrea Østrup, 1901 (uncertain > unassessed)
103. Species Fallacia vittata (Cleve) D.G.Mann, 1990 accepted as Diploneis bioculata var. vittata Cleve, 1894 (uncertain > unassessed)
104. Species Fallacia wuestii (R.Simonsen) K.Sabbe & K.Muylaert, 1999 accepted as Navicula wuestii R.Simonsen, 1959 (uncertain > unassessed)
105. Species Fallacia zonata (Hustedt) D.G.Mann, 1990 accepted as Navicula zonata Hustedt, 1956 (uncertain > unassessed)

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