1. Species Micrarionta beatula T. D. A. Cockerell, 1929
2. Species Micrarionta facta (Newcomb, 1864)
3. Species Micrarionta feralis (Hemphill, 1901)
4. Species Micrarionta gabbii (Newcomb, 1864)
5. Species Micrarionta guadalupiana (Dall, 1898)
6. Species Micrarionta intermedia Pilsbry, 1939
7. Species Micrarionta micromphala Pilsbry, 1939
8. Species Micrarionta opuntia B. Roth, 1975
9. Species Micrarionta rufocincta (Newcomb, 1864)
10. Species Micrarionta sodalis (Hemphill, 1901)
11. Subgenus Micrarionta (Chamaearionta) S. S. Berry, 1930 accepted as Chamaearionta S. S. Berry, 1930 (unaccepted rank)
    1. Species Micrarionta (Chamaearionta) aquaealbae S. S. Berry, 1922 accepted as Chamaearionta aquaealbae (S. S. Berry, 1922) (unaccepted > superseded combination)
12. Subgenus Micrarionta (Eremarionta) Pilsbry, 1913 accepted as Eremarionta Pilsbry, 1913
    1. Species Micrarionta (Eremarionta) aetotis S. S. Berry, 1928 accepted as Sonorelix rixfordi (Pilsbry, 1919)
    2. Species Micrarionta (Eremarionta) avawatzica S. S. Berry, 1930 accepted as Sonorelix avawatzica (S. S. Berry, 1930)
    3. Species Micrarionta (Eremarionta) borregoensis S. S. Berry, 1929 accepted as Sonorelix borregoensis borregoensis (S. S. Berry, 1929) (original combination)
    4. Species Micrarionta (Eremarionta) callinepius S. S. Berry, 1930 accepted as Cahuillus indioensis indioensis (L. G. Yates, 1890)
    5. Species Micrarionta (Eremarionta) depressispira S. S. Berry, 1928 accepted as Sonorelix rixfordi (Pilsbry, 1919)
    6. Species Micrarionta (Eremarionta) melanopylon S. S. Berry, 1930 accepted as Sonorelix melanopylon (S. S. Berry, 1930)
    7. Species Micrarionta (Eremarionta) micrometalleus S. S. Berry, 1930 accepted as Sonorelix micrometalleus (S. S. Berry, 1930)
    8. Species Micrarionta (Eremarionta) millepalmarum S. S. Berry, 1930 accepted as Eremarionta millepalmarum (S. S. Berry, 1930)
    9. Species Micrarionta (Eremarionta) morongoana S. S. Berry, 1929 accepted as Eremarionta morongoana (S. S. Berry, 1929)
13. Subgenus Micrarionta (Plesarionta) Pilsbry, 1939 accepted as Xerarionta (Plesarionta) Pilsbry, 1939 represented as Xerarionta Pilsbry, 1913
14. Subgenus Micrarionta (Xerarionta) Pilsbry, 1913 accepted as Xerarionta Pilsbry, 1913
    1. Species Micrarionta (Xerarionta) agnesae Kanakoff, 1950 accepted as Xerarionta agnesae (Kanakoff, 1950)
    2. Species Micrarionta (Xerarionta) callojunctis Pilsbry, 1939 accepted as Xerarionta intercisa (W. G. Binney, 1857)
    3. Species Micrarionta (Xerarionta) ductor Pilsbry, 1939 accepted as Xerarionta intercisa (W. G. Binney, 1857)
    4. Species Micrarionta (Xerarionta) puer Pilsbry, 1939 accepted as Xerarionta intercisa (W. G. Binney, 1857)
    5. Species Micrarionta (Xerarionta) tryoni (uncertain)
15. Species Micrarionta aquaealbae S. S. Berry, 1922 accepted as Chamaearionta aquaealbae (S. S. Berry, 1922) (unaccepted > superseded combination)
16. Species Micrarionta areolata (L. Pfeiffer, 1845) accepted as Xerarionta areolata (L. Pfeiffer, 1845) (unaccepted combination)
17. Species Micrarionta brunnea Willett, 1935 accepted as Eremarionta brunnea (Willett, 1935)
18. Species Micrarionta canescens (A. Adams & Reeve, 1850) accepted as Xerarionta levis canescens (A. Adams & Reeve, 1850)
19. Species Micrarionta chacei Willett, 1940 accepted as Herpeteros chacei (Willett, 1940) accepted as Herpeteros chaceorum (Willett, 1940) (unaccepted > superseded combination, original combination)
20. Species Micrarionta chocolata Willett, 1935 accepted as Eremarionta rowelli chocolata (Willett, 1935)
21. Species Micrarionta chuckwallana Willett, 1935 accepted as Eremarionta rowelli chuckwallana (Willett, 1935)
22. Species Micrarionta dallasi M. A. Hanna, 1927 † accepted as Helicina dallasi (M. A. Hanna, 1927) † (unaccepted > superseded combination)
23. Species Micrarionta desertorum Pilsbry & Ferriss, 1908 accepted as Eremarionta rowelli desertorum (Pilsbry & Ferriss, 1908) (original combination)
24. Species Micrarionta evermanni Pilsbry, 1927 accepted as Herpeteros evermanni (Pilsbry, 1927) (unaccepted > superseded combination, basionym)
25. Species Micrarionta granitensis Willett, 1935 accepted as Eremarionta rowelli granitensis (Willett, 1935)
26. Species Micrarionta hutsoni (G. H. Clapp, 1907) accepted as Eremarionta rowelli hutsoni (G. H. Clapp, 1907) (unaccepted > superseded combination)
27. Species Micrarionta immaculata Willett, 1937 accepted as Eremarionta immaculata (Willett, 1937)
28. Species Micrarionta indioensis (L. G. Yates, 1890) accepted as Cahuillus indioensis (L. G. Yates, 1890) (unaccepted > superseded combination)
29. Species Micrarionta inglesia S. S. Berry, 1928 accepted as Herpeteros inglesiana (S. S. Berry, 1928) (original combination)
30. Species Micrarionta levis (L. Pfeiffer, 1845) accepted as Xerarionta levis (L. Pfeiffer, 1845) (unaccepted > superseded combination)
31. Species Micrarionta mccoiana Willett, 1935 accepted as Eremarionta rowelli mccoiana (Willett, 1935)
32. Species Micrarionta newcombi Pilsbry & Ferriss, 1923 accepted as Eremarionta newcombi (Pilsbry & Ferriss, 1923)
33. Species Micrarionta ora Willett, 1929 accepted as Sonorelix borregoensis ora (Willett, 1929)
34. Species Micrarionta orocopia Willett, 1939 accepted as Eremarionta orocopia (Willett, 1939)
35. Species Micrarionta pandorae (Forbes, 1850) accepted as Xerarionta pandorae (Forbes, 1850) (unaccepted > superseded combination)
36. Species Micrarionta praesidii Pilsbry & Ferriss, 1919 accepted as Sonorella praesidii (Pilsbry & Ferriss, 1919)
37. Species Micrarionta reedi Willett, 1929 accepted as Sonorelix borregoensis borregoensis (S. S. Berry, 1929)
38. Species Micrarionta rixfordi Pilsbry, 1919 accepted as Sonorelix rixfordi (Pilsbry, 1919) (original combination)
39. Species Micrarionta rowelli (Newcomb, 1865) accepted as Eremarionta rowelli (Newcomb, 1865) (unaccepted > superseded combination)
40. Species Micrarionta stearnsiana (Gabb, 1868) accepted as Xerarionta stearnsiana (Gabb, 1868) (unaccepted > superseded combination)
41. Species Micrarionta veatchii (Newcomb, 1866) accepted as Xerarionta veatchii (Newcomb, 1866) (unaccepted > superseded combination)
42. Species Micrarionta xerophila S. S. Berry, 1922 accepted as Cahuillus indioensis xerophilus (S. S. Berry, 1922) (unaccepted > superseded combination)
43. Subgenus Micrarionta (Micrarionta) Ancey, 1880 represented as Micrarionta Ancey, 1880
    1. Species Micrarionta (Micrarionta) sodalis (uncertain)
44. Subgenus Micrarionta (Nicolenea) B. Roth, 1996 represented as Micrarionta Ancey, 1880
45. Species Micrarionta harperi (uncertain)
46. Species Micrarionta redimita (uncertain)

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