Zeidora

Zeidora is a genus of sea snails, marine gastropod mollusks in the family Fissurellidae, the keyhole limpets.^[1]

Zeidora
Shell of Zeidora crepidula
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Lepetellida
Superfamily:	Fissurelloidea
Family:	Fissurellidae
Subfamily:	Zeidorinae
Genus:	Zeidora Adams, 1860
Type species
Zeidora calceolina Adams, 1860
Synonyms[1]
† Crepiemarginula Seguenza, 1880 Emarginula (Nesta) H. Adams, 1870 · Legrandia Beddome, 1883 (invalid: junior homonym of Legrandia Hanley, 1872) Nesta Adams, 1870 Zidora Fischer, 1885 (invalid: unjustified emendation of Zeidora Adams, 1860)

Description

The genus Zeidora was instituted by A. Adams in 1860, for the reception of two Japanese shells having the outer aspect of Emarginula and an internal shelf as in Crepidula.^[2]

The shell resembles Emarginula, with the margin of the aperture crenulated and anteriorly deeply fissured, but there is posteriorly an internal, flat, semilunar septum present, which distinguishes this genus from any other Fissurellidae.^[3]

Species

Species within the genus Zeidora include:

• Zeidora amamiensis (Habe, 1963)
• Zeidora antarctica Aldea, Zelaya & Troncoso, 2011
• Zeidora bahamondei Rehder, 1980
• Zeidora bigelowi Pérez Farfante, 1947^[4]
• Zeidora calceolina Adams, 1860
• † Zeidora clypeata (Lamarck, 1803)
• Zeidora crepidula Simone & Cunha, 2014
• Zeidora flabellum (Dall, 1896)
• Zeidora galapagensis (McLean, 1970)
• † Zeidora geigeri Helwerda & Wesselingh, 2014
• † Zeidora gruelli R. Janssen, 1984
• † Zeidora lacipidinae Lozouet, 1999
• † Zeidora ligustica Bellardi, 1878
• Zeidora lodderae (Tate & May, 1900)
• Zeidora macleani Gálvez & Torres, 2019
• Zeidora maoria Powell, 1936
• Zeidora milerai Espinosa, Ortea & Fernandez-Garces, 2004^[5]
• Zeidora naufraga Watson, 1883^[6]
• Zeidora neritica Espinosa, Ortea & Fernandez-Garces, 2004^[7]
• Zeidora nesta (Pilsbry, 1890)
• Zeidora pussa Simone & Cunha, 2014
• Zeidora reticulata Adams, 1862
• Zeidora tasmanica (Beddome, 1883)
• † Zeidora virodunensis Lozouet, 1999

Species brought into synonymy

• Zeidora candida (Adams, 1870): synonym of Zeidora nesta (Pilsbry, 1890)
• Zeidora legrandi Tate, 1894: synonym of Zeidora tasmanica (Beddome, 1883)
• Zeidora limatulaeformis Horikoshi, 1944: synonym of Zeidora calceolina A. Adams, 1860
• † Zeidora seguenzae R. B. Watson, 1883: synonym of † Zeidora ligustica Bellardi, 1878