Leptothyra

{{Short description|Genus of gastropods}} {{Automatic taxobox |taxon = Leptothyra |fossil_range = |image = Leptothyra filifer 001.jpg |image_caption = ''Leptothyra filifer'' shells |authority =sensu Pease, 1869<ref>Pease (1869). ''American Journal of Conchology'' '''5'''(2): 70.</ref> |type_species=''Leptothyra costata'' Pease, 1869 | synonyms_ref = <ref name="WoRMS" /> |synonyms = |display_parents= 3 }}

'''''Leptothyra''''' is a genus of sea snails, marine gastropod mollusks in the family Colloniidae.<ref name="WoRMS">{{WRMS species|204332|''Leptothyra'' ||18 March 2011}}</ref>

This genus was previously placed in the family Turbinidae.

The name ''Leptothyra'' is generally attributed to Pease (1869), and the name "Leptothyra Pease, 1869" is usually treated as a valid name for small colloniines. Although ''Leptothyra'' is a junior objective synonym of ''Homalopoma'', the species usually treated as valid in that genus are provisionally listed in WoRMS under "Leptothyra sensu Pease, 1869", pending a taxonomic/nomenclatural reappraisal.<ref name="WoRMS" />

''Leptothyra'' J. G. Cooper, 1867 is now considered a junior objective synonym of the genus ''Homalopoma'' Carpenter, 1864.<ref>Bouchet, P. (2014). Leptothyra J. G. Cooper, 1867. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=751372 on 2014-06-12</ref>

==Description== The small, solid shell has a turbinate or globose shape. The operculum is multispiral with a subcentral nucleus and concave in the centre outside. The main character distinguishing ''Collonia'' from ''Leptothyra'' seems to be the peculiar peristome of the former.<ref>[https://www.biodiversitylibrary.org/item/77914 G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia]</ref>

==Species== Species within the genus ''Leptothyra'' include: * ''Leptothyra balnearii'' Pilsbry, H.A., 1920 * ''Leptothyra benthicola'' (Marshall, 1979) * ''Leptothyra candida'' Pease, 1861<ref>{{WRMS species|216361|''Leptothyra candida'' Pease, 1861||20 April 2010}}</ref> * ''Leptothyra filifer'' (Deshayes, 1863)<ref>{{WRMS species|216362|''Leptothyra filifera'' (Deshayes, 1863)||20 April 2010}}</ref> * ''Leptothyra grossa'' Feng, 1996 * ''Leptothyra kermadecensis'' (Marshall, 1979) * ''Leptothyra morini'' Viader, R., 1951 * ''Leptothyra nanina'' (Souverbie in Souverbie & Montrouzier, 1864) * ''Leptothyra rubens'' Melvill & Standen, 1903 ;Species brought into synonymy: * ''Leptothyra africana'' Bartsch, 1915: synonym of ''Cinysca spuria'' (Gould, 1861) * ''Leptothyra agulhasensis'' Thiele, 1925: synonym of ''Homalopoma agulhasense'' (Thiele, 1925) * ''Leptothyra albida'' Dall, 1881: synonym of ''Homalopoma albidum'' (Dall, 1881) * ''Leptothyra albocincta'' Turton, 1932: synonym of ''Tricolia striolata'' (Turton, 1932) * ''Leptothyra alfredensis'' Bartsch, 1915: synonym of ''Parviturbo alfredensis'' (Bartsch, 1915) * ''Leptothyra arenacea'' Pritchard & Gatliff, 1902: synonym of ''Charisma arenacea'' (Pritchard & Gatliff, 1902) * ''Leptothyra carminea'' Bartsch, 1915: synonym of ''Homalopoma quantillum carmineum'' (Bartsch, 1915) * ''Leptothyra coelata'' A. Adams, 1854: synonym of ''Anadema macandrewii'' Mörch, 1868 * ''Leptothyra costata'' Pease, 1869: synonym of ''Leptothyra verruca'' (Gould, 1845) * ''Leptothyra crassilirata'' Preston, 1909: synonym of ''Collonista crassilirata'' (Preston, 1909) * ''Leptothyra cunninghami'' E. A. Smith, 1881: synonym of ''Homalopoma cunninghami'' (E. A. Smith, 1881) * ''Leptothyra delecta'' E. A. Smith, 1899: synonym of ''Collonista delecta'' (E. A. Smith, 1899) * ''Leptothyra eroopolitana'' (Issel, 1869) : synonym of ''Collonista eroopolitana'' (Issel, 1869) * ''Leptothyra eucosmia'' Turton, 1932: synonym of ''Cinysca spuria'' (Gould, 1861) * ''Leptothyra fluctuata'' (Hutton, 1883): synonym of ''Argalista fluctuata'' (Hutton, 1883) * ''Leptothyra folini'' Pilsbry, 1889: synonym of ''Collonista purpurata'' (Deshayes, 1863) * ''Leptothyra gestroi'' Caramagna, 1888:<ref>{{WRMS species|216360|''Leptothyra gestroi'' Caramagna, 1888||20 April 2010}}</ref> synonym of ''Yaronia gestroi'' (Caramagna, 1888) * ''Leptothyra globuloides'' Dautzenberg & H. Fischer, 1896: synonym of ''Cantrainea globuloides'' (Dautzenberg & H. Fischer, 1896) * ''Leptothyra induta'' Watson, 1879: synonym of ''Homalopoma indutum'' (Watson, 1879) * ''Leptothyra induta'' var. ''tincta'' Dall, 1889: synonym of ''Homalopoma indutum'' (Watson, 1879) * ''Leptothyra induta'' var. ''insculpta'' Dall, 1889: synonym of ''Homalopoma indutum'' (Watson, 1879) * ''Leptothyra inepta'' (Gould, A.A., 1861):<ref>{{Gastropods.com|key=4|id=57824|title=''Leptothyra inepta''|access-date=12 January 2019}}</ref> synonym of ''Neocollonia pilula'' (Dunker, 1860): synonym of ''Bothropoma pilula'' (Dunker, 1860) * ''Leptothyra innocens'' Thiele, 1912: synonym of ''Leptocollonia innocens'' (Thiele, 1912) * ''Leptothyra insculpta'' Dall, 1889: synonym of ''Homalopoma indutum'' (Watson, 1879) * ''Leptothyra laeta'' (Montrouzier in Souverbie & Montrouzier, 1863): synonym of ''Collonia granulosa'' Pease, 1868 * ''Leptothyra limata'' Dall, 1889: synonym of ''Homalopoma linnei'' (Dall, 1889) * ''Leptothyra linnei'' Dall, 1889: synonym of ''Homalopoma linnei'' (Dall, 1889) * ''Leptothyra paucicostata'' Dall, 1871: synonym of ''Homalopoma paucicostatum'' (Dall, 1871) * ''Leptothyra philipiana'' Dall, 1889: synonym of ''Cantrainea philipiana'' (Dall, 1889) * ''Leptothyra picta'' Marshall, 1979: synonym of ''Leptothyra kermadecensis'' Marshall, 1979 * ''Leptothyra quantilla'' (Gould, 1861): synonym of ''Homalopoma quantillum'' (Gould, 1861) * ''Leptothyra rotundata'' (G.B. Sowerby III, 1892): synonym of ''Homalopoma rotundatum'' (G.B. Sowerby III, 1892) * ''Leptothyra rubricincta'' (Mighels, 1845): synonym of ''Collonista rubricincta'' (Mighels, 1845) * ''Leptothyra sakaensis'' Yokoyama, 1925: synonym of ''Littorina brevicula'' (Philippi, 1844) * ''Leptothyra sanguinea'' Linnaeus, 1758: synonym of ''Homalopoma sanguineum'' (Linnaeus, 1758) * ''Leptothyra solida'' Preston, 1908: synonym of ''Collonista solida'' (Preston, 1908) * ''Leptothyra tincta'' Dall, 1889: synonym of ''Homalopoma indutum'' (Watson, 1879) * ''Leptothyra verruca'' (Gould, 1845): synonym of ''Collonista verruca'' (Gould, 1845)

==References== {{Reflist}}

==Further reading== * Marshall B. A. (1979). ''The Trochidae and Turbinidae of the Kermadec Ridge (Mollusca: Gastropoda)''. New Zealand Journal of Zoology 6: 521-552 * Huang S.-I, Fu I-F. & Poppe G.T. (2016). Taiwanese and Philippine Colloniidae. Nomenclatural remarks and the description of 17 new species (Gastropoda: Colloniidae). Visaya. 4(5): 4-42

Category:Colloniidae Category:Taxa named by William Harper Pease