Leptothyra

Leptothyra is a genus of sea snails, marine gastropod mollusks in the family Colloniidae.[2]

Leptothyra
Leptothyra filifer shells
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Vetigastropoda
Superfamily:
Phasianelloidea
Family:
Colloniidae
Subfamily:
Colloniinae
Genus:
Leptothyra

sensu Pease, 1869[1]
Type species
Leptothyra costata Pease, 1869

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.[2]

Leptothyra J. G. Cooper, 1867 is now considered a junior objective synonym of the genus Homalopoma Carpenter, 1864 [3]

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.[4]

Species

Species within the genus Leptothyra include:

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 Turbo eroopolitanus 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:[7] 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) [8]: 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 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)
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References
  1. Pease (1869). American Journal of Conchology 5(2): 70.
  2. Leptothyra . Retrieved through: World Register of Marine Species on 18 March 2011.
  3. 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
  4. G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
  5. Leptothyra candida Pease, 1861. Retrieved through: World Register of Marine Species on 20 April 2010.
  6. Leptothyra filifera (Deshayes, 1863). Retrieved through: World Register of Marine Species on 20 April 2010.
  7. Leptothyra gestroi Caramagna, 1888. Retrieved through: World Register of Marine Species on 20 April 2010.
  8. "Leptothyra inepta". Gastropods.com. Retrieved 12 January 2019.

Further reading
  • Marshall B. A. (1979). The Trochidae and Turbinidae of the Kermadec Ridge (Mollusca: Gastropoda). New Zealand Journal of Zoology 6: 521-552


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