Diodora
Like all other fissurellids, Diodora species are herbivores, and use the radula to scrape algae from rocks. An exception is D. apertura , which grazes on sponges such as Hymeniacidon .
Water for respiration and excretion is drawn in under the edge of the shell and exits through the "keyhole" at or near the apex.
Species in this genus include:
Synonyms:
Diodora fimbriata Reeve, 1850 : synonym of Diodora jukesii (Reeve, 1850) Diodora natalensis (Krauss, 1848) : synonym of Fissurella natalensis Krauss, 1848 Diodora nigropunctata Thiele, 1930 : synonym of Diodora jukesii (Reeve, 1850) Diodora noachina (Linnaeus, 1771) : synonym of Puncturella noachina (Linnaeus, 1771) Diodora octogona [sic]: synonym of Diodora octagona (Reeve, 1850) Diodora ovalis Thiele, 1930 : synonym of Diodora singaporensis (Reeve, 1850) Diodora philippiana (Finlay, 1930) : synonym of Lucapina philippiana (Finlay, 1930) Diodora plicifera Thiele, 1930 : synonym of Diodora jukesii (Reeve, 1850) Diodora reevei Schepman, 1908 : synonym of Diodora octagona (Reeve, 1850) Diodora ruppellii (G.B. Sowerby I, 1835) : synonym of Diodora rueppellii (G.B. Sowerby I, 1835) Diodora rugosa Thiele, 1930 : synonym of Diodora lineata (G.B. Sowerby I, 1835) Further species include
Diodora alternata Say, 1822 Diodora beebei (Hertlein and Strong, 1951) Diodora bombayana Sowerby, 1862 Diodora carditella Dall Diodora crenifera (Sowerby, 1835) Diodora densiclathrata McLean, 1966 Diodora elaborata Sowerby Diodora fusilla S. S. Berry, 1959 (or Diodora pusilla Berry, 1959 ?)Diodora habanensis Christiaens, 1975 Diodora murina Arnold, 1903 Diodora mus (Reeve, 1850) Diodora nucula (Dall) Diodora semilunata (Habe, 1953) Diodora suprapunicea (Otuka, 1937) Diodora tenebrosa Conrad Diodora vola Reeve 
