| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Diodora aguayoi Perez Farfante, 1943 |
Western Atlantic | 1.7 | |
| Diodora alta (Adams, 1852) |
Southeast Pacific | ||
| Diodora arcuata (Sowerby II, 1862) |
Arcuate keyhole limpet | Western Atlantic | 1.2 |
| Diodora arnoldi McLean, 1966 |
Neat-rib keyhole limpet | East Pacific | |
| Diodora aspera (Rathke, 1833) |
Keyhole limpet | Eastern Pacific and the Arctic | 7.5 |
| Diodora bermudensis (Dall & Bartsch, 1911) |
Bermuda keyhole limpet | Western Atlantic Ocean | 0.5 |
| Diodora bollonsi (Oliver, 1915) |
Southwest Pacific | ||
| Diodora cayenensis (Lamarck, 1822) |
Cayenne keyhole limpet | Atlantic Ocean | 5.1 |
| Diodora clathrata (Reeve, 1849) |
Western Central Pacific | 4 | |
| Diodora cruciata Gould, 1848 |
Western Central Pacific | ||
| Diodora demartiniorum Buzzurro & Russo, 2004 |
Mediterranean Sea | ||
| Diodora dorsata (Monterosato, 1878) |
Mediterranean Sea | ||
| Diodora dysoni (Reeve, 1850) |
Dyson's keyhole limpet | Western Atlantic | 2.2 |
| Diodora fargoi Olsson & McGinty, 1958 |
Western Atlantic | 0.86 | |
| Diodora fluviana (Dall, 1889) |
Gulf Stream keyhole limpet | Western Atlantic | 1.2 |
| Diodora foveolata (Garrett, 1872) |
Eastern Central Pacific | ||
| Diodora fragilis Farfante & Henriquez, 1947 |
Western Central Atlantic | 2 | |
| Diodora funiculata (Reeve, 1850) |
Western Indian Ocean | ||
| Diodora galeata (Helbling, 1779) |
Western Central Pacific | ||
| Diodora gibberula (Lamarck, 1822) |
Mediterranean Sea | ||
| Diodora graeca (Linnaeus, 1758) |
Common keyhole limpet | Northeast Atlantic and the Mediterranean and Black Sea | |
| Diodora granifera (Pease, 1861) |
Eastern Pacific | 0.886 | |
| Diodora inaequalis (Sowerby, 1835) |
Southeast Pacific | ||
| Diodora italica (Defrance, 1820) |
Italian keyhole limpet | Mediterranean Sea | |
| Diodora jaumei Aguayo & Rehder, 1936 |
Jaume's keyhole limpet | Western Atlantic | 2.2 |
| Diodora listeri (d'Orbigny, 1842) |
Lister's keyhole limpet | Western Atlantic | 4.5 |
| Diodora meta (von Ihering, 1927) |
Meta keyhole limpet | Western Atlantic | 1.6 |
| Diodora minuta (Lamarck, 1822) |
Dwarf keyhole limpet | Western Central Atlantic | 1.6 |
| Diodora mirifica Métivier, 1972 |
Western Atlantic | 0.8 | |
| Diodora mus (Reeve, 1850) |
Mouse keyhole limpet | Western Pacific | |
| Diodora octagona (Reeve, 1850) |
Indo-Pacific | ||
| Diodora patagonica d'Orbigny, 1847 |
Western Atlantic and Eastern Pacific | 3.8 | |
| Diodora producta (Monterosato, 1880) |
Mediterranean Sea | ||
| Diodora quadriradiata (Reeve, 1850) |
Radially-ribbed keyhole limpet | Indo-West Pacific | |
| Diodora reevei (Schepman, 1908) |
Western Central Pacific | ||
| Diodora ruppellii (Sowerby, 1835) |
Ruppell's keyhole limpet | Indo-Pacific | |
| Diodora sarasuae Espinosa, 1984 |
Western Atlantic | 1.09 | |
| Diodora saturnalis (Carpenter, 1864) |
Southeast Pacific | ||
| Diodora sayi (Dall, 1889) |
Say's keyhole limpet | Western Atlantic | 3 |
| Diodora sieboldi (Reeve, 1850) |
Western Central Pacific | ||
| Diodora singaporensis (Reeve, 1850) |
Indo-West Pacific | ||
| Diodora tanneri (Verrill, 1882) |
Western Atlantic | 5.8 | |
| Diodora ticaonica (Reeve, 1850) |
Western Central Pacific | ||
| Diodora variegata Sowerby II, 1862 |
Variegate keyhole limpet | Western Central Atlantic | 1.5 |
| Diodora vetula (Woodring, 1928) |
Western Atlantic | 0.3 | |
| Diodora viridula (Lamarck, 1822) |
Green keyhole limpet | Western Central Atlantic | 3.2 |
| Diodora wetmorei Perez Farfante, 1945 |
Western Atlantic | 2.4 |