Retusa

Retusa is a genus of very small head-shield sea snails or barrel-bubble snails, marine gastropod molluscs in the family Retusidae.

Species
Species within the genus Retusa include:


 * Retusa abyssicola Valdés, 2008
 * Retusa acrobeles (R. B. Watson, 1883)
 * †Retusa acrochone (Cossmann & Pissarro, 1900)
 * Retusa agulhasensis Thiele, 1925
 * Retusa amboynensis (R. B. Watson, 1883)
 * Retusa amphizosta (Watson, 1886)
 * Retusa avenaria (R. B. Watson, 1883)
 * Retusa atkinsoni (Tenison-Woods, 1876)
 * Retusa canariensis (Nordsieck & Talavera, 1979)
 * Retusa carpenteri (Hanley, 1859)
 * Retusa cecillii (Philippi, 1844)
 * Retusa chrysoma Burn in Burn & Bell, 1974
 * Retusa chukchii Chaban, 2008
 * Retusa complanata (Watson, 1883)
 * Retusa concentrica (A. Adams, 1850)
 * Retusa crebrisculpta (Monterosato, 1884)
 * Retusa crispula (Watson, 1883)
 * Retusa crossei (Bucquoy, Dautzenberg & Dollfus, 1886)
 * Retusa delicatula (A. Adams, 1862)
 * Retusa desgenettii (Audouin, 1826)
 * Retusa diaphana Valdés, 2008
 * Retusa elegantissima Habe, 1950
 * †Retusa ennucleata (Powell & Bartrum, 1929)
 * Retusa famelica Watson, 1883
 * Retusa frielei (Dall, 1881)
 * Retusa galapagana Dall, 1919
 * Retusa golikovi Chaban, 2004
 * Retusa insolita Valdés, 2008
 * Retusa instabilis Minichev, 1971
 * Retusa laevisculpta (Granata-Grillo, 1877)
 * Retusa lata Chaban & Chernyshev, 2013
 * Retusa lenis Valdés, 2008
 * Retusa leptekes (R. B. Watson, 1883)
 * Retusa leptoeneilema (Brusina, 1866)
 * Retusa leuca (R. B. Watson, 1883)
 * Retusa longispirata (Yamakawa, 1911)
 * Retusa mammillata (Philippi, 1836)
 * Retusa mariei (Dautzenberg, 1889)
 * Retusa mayoi (Dall, 1889)
 * Retusa minima Yamakawa, 1911
 * Retusa minutissima (Monterosato, 1878)
 * Retusa montereyensis Smith & Gordon, 1948
 * Retusa natalensis Barnard, 1963
 * Retusa nicobarica Thiele, 1925
 * Retusa nitidula (Lovén, 1846)
 * Retusa obtusa (Montagu, 1803)
 * Retusa operculata Minichev, 1966
 * Retusa opima (Finlay, 1926)
 * Retusa orientalis Thiele, 1925
 * Retusa oruaensis (Webster, 1908)
 * Retusa orycta (R. B. Watson, 1883)
 * †Retusa otahuhuensis (Laws, 1950)
 * Retusa oviformis Thiele, 1925
 * Retusa ovoides (Milaschewitsch, 1916)
 * Retusa ovulina Lin, 1991
 * Retusa parvula (Jeffreys, 1883)
 * Retusa paziana Dall, 1919
 * Retusa pelyx Burn in Burn & Bell, 1974
 * Retusa perforata Thiele, 1925
 * Retusa pervia (Dall, 1889)
 * Retusa pharetra Hedley, 1909
 * †Retusa pressa Marwick, 1928
 * Retusa protumida (Hedley, 1903)
 * Retusa pseudoglobosa Nomura, 1939
 * Retusa pygmaea (A. Adams, 1850)
 * Retusa sakuraii (Habe, 1958)
 * Retusa sculpta (Gatliff & Gabriel, 1913)
 * †Retusa segnis (Laws, 1940)
 * Retusa siberutensis Thiele, 1925
 * †Retusa soror (Suter, 1917)
 * Retusa sosa Ev. Marcus & Er. Marcus, 1969
 * Retusa spatha (R. B. Watson, 1883)
 * Retusa striata (Hutton, 1873)
 * Retusa succincta (A. Adams, 1862)
 * Retusa sulcata (d'Orbigny, 1841)
 * Retusa sulcata (Watson, 1883) is a secondary junior homonym of Retusa sulcata (d'Orbigny, 1841) . No replacement name has been proposed, but the systematics of these small cephalaspids is very confused, and both species may end up in different genera after a proper re-evaluation of their status.
 * Retusa sumatrana Thiele, 1925
 * Retusa tarutana Smythe, 1979
 * Retusa tenerifensis (Nordsieck & Talavera, 1979)
 * Retusa tornata (Watson, 1886)
 * Retusa toyamaensis (Habe, 1955)
 * Retusa trunca Valdés, 2008
 * Retusa truncatula (Bruguière, 1792)
 * Retusa turrigera Melvill, 1910
 * Retusa umbilicata (Montagu, 1803)
 * Retusa variabilis (Milaschewitsch, 1912)
 * Retusa waughiana Hedley, 1899
 * Retusa xystrum Dall, 1919


 * Taxa inquirenda:
 * Retusa bysma Melvill, 1904
 * Retusa candidula (Locard, 1892) (taxon inquirendum, name is based on a junior primary homonym.)
 * Retusa ennurensis Preston, 1916
 * Retusa multiquadrata Oberling, 1970 (taxon inquirendum; needs investigation)
 * Retusa obesa (Locard, 1897)
 * Retusa pusillina (Locard, 1897)
 * Retusa robagliana (P. Fischer, 1869) (taxon inquirendum)
 * Retusa semen (Reeve, 1855) (taxon inquirendum)
 * Species brought into synonymy:
 * Retusa alayoi (Espinosa & Ortea, 2004): synonym of Colinatys alayoi (Espinosa & Ortea, 2004)
 * Retusa anderssoni Strebel, 1908: synonym of Diaphana anderssoni (Strebel, 1908)
 * Retusa antarctica Melvill & Standen, 1912: synonym of Diaphana paessleri (Strebel, 1905)
 * Retusa apiculata (Tate, 1879): synonym of Tornatina apiculata (Tate, 1879): synonym of Acteocina apiculata (Tate, 1879)
 * Retusa bizona (A. Adams, 1850): synonym of Mnestia girardi (Audouin, 1826)
 * Retusa caelata (Bush, 1885): synonym of Pyrunculus caelatus (Bush, 1885)
 * Retusa carinensis de Gregorio, 1889: synonym of Retusa truncatula (Bruguière, 1792)
 * Retusa cumberlandiana Strebel, 1908: synonym of Cylichna cumberlandiana (Strebel, 1908)
 * Retusa desgenettesi (Audouin, 1827): synonym of Retusa desgenettii (Audouin, 1826)
 * Retusa dilatata Pallary, 1904: synonym of Retusa truncatula (Bruguière, 1792)
 * Retusa domita (Dall, 1889): synonym of Cylichnium domitum (Dall, 1908)
 * Retusa eumicra (Crosse in Crosse & Fischer, 1865): synonym of Tornatina eumicra (Crosse, 1865): synonym of Acteocina eumicra (Crosse, 1865)
 * Retusa fourierii (Audouin, 1826): synonym of Pyrunculus fourierii (Audouin, 1826)
 * Retusa frigida Hedley, 1916: synonym of Diaphana paessleri (Strebel, 1905)
 * Retusa gaimardi Finlay, 1927: synonym of Acteocina decorata (Pilsbry, 1904)
 * Retusa girardi (Audouin, 1826): synonym of Ventomnestia girardi (Audouin, 1826)
 * Retusa gordonis Yokoyama, 1927: synonym of Acteocina gordonis (Yokoyama, 1927)
 * Retusa inflata Strebel, 1908: synonym of Diaphana inflata (Strebel, 1908)
 * Retusa insignis (Pilsbry, 1904) : synonym of Decorifer insignis (Pilsbry, 1904)
 * Retusa lactea (Jeffreys, 1877): synonym of Diaphana lactea (Jeffreys, 1877)
 * Retusa mariateresae Parenzan, 1970: synonym of Bulla striata Bruguière, 1792
 * Retusa marshalli Sykes, 1904: synonym of Diaphana marshalli (Sykes, 1904)
 * Retusa matusimana Nomura, 1939: synonym of Decorifer matusimanus (Nomura, 1939)
 * Retusa obtusata: synonym of Retusa obtusa (Montagu, 1803)
 * Retusa pellucida (T. Brown, 1827) : synonym of Retusa truncatula (Bruguière, 1792)
 * Retusa pertenuis (Mighels, 1843): synonym of Retusa obtusa (Montagu, 1803)
 * Retusa pfefferi Strebel, 1908: synonym of Diaphana pfefferi (Strebel, 1908)
 * Retusa piriformis Nordsieck, 1972: synonym of Retusa truncatula (Bruguière, 1792)
 * Retusa semen Thiele, 1925: synonym of Pyrunculus pyriformis (A. Adams, 1850)
 * Retusa semisulcata (Philippi, 1836): synonym of Retusa truncatula (Bruguière, 1792)
 * Retusa strigella (Lovén, 1846): synonym of Cylichnina umbilicata (Montagu, 1803): synonym of Retusa umbilicata (Montagu, 1803)
 * Retusa subcylindrica (Brown, 1827): synonym of Cylichnina umbilicata (Montagu, 1803): synonym of Retusa umbilicata (Montagu, 1803)
 * Retusa tohokuensis Nomura, 1939: synonym of Acteocina tohokuensis (Nomura, 1939)
 * Retusa truncatoides Nomura, 1939: synonym of Acteocina truncatoides (Nomura, 1939)
 * Retusa turrita Møller, 1842: synonym of Retusa obtusa (Montagu, 1803)