''Megastomia'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s, marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Pyramidellidae Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromol ...

, the pyrams and their allies.Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda.

Taxonomy

Over fifty species worldwide have been placed in (sub)genus ''Megastomia'' Monterosato, 1884 by a number of authors (e.g. Saurin, 1959, 1962; Peñas & Rolán, 1999; Giannuzzi-Savelli et al. (2014). On the basis of 16s mtDNA sequence data, Schander et al. (2003) distinguished, and placed in ''Megastomia'', two species (''M. conoidea'' (Brocchi, 1814) and ''M. corimbensis'' (Schander, 1994)), which clustered separately from other species placed in ''

Odostomia ''Odostomia'' is the most speciose genus of minute sea snails, pyramidellid gastropod mollusks. This genus is placed in the family Pyramidellidae in the subfamily Odostomiinae. There are several hundred species in this diverse genus ( Schander ...

'' Fleming, 1813. However Høisæter (2014: 34) correctly pointed out that the type species ''Odostomia conspicua'' Alder, 1850 "is a typical ''Odostomia s.s.'' and has few traits in common with ''O. conoidea''". Considering the large number of species involved, and considering that for most of these species ''Odostomia'' is probably not more appropriate, the published combinations with ''Megastomia'' are nevertheless retained by the database

WoRMS The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

as "accepted" until more data become available.

Species

Species within the genus ''Megastomia'' include: * '' Megastomia adiposa'' (Laseron, 1959) * '' Megastomia adolphi'' (Saurin, 1959) * '' Megastomia algoensis'' (Thiele, 1925) * '' Megastomia aliter'' Penas & Rolan, 1999 * '' Megastomia alungata'' (Nordsieck, 1972) * '' Megastomia ampliata'' (Saurin, 1962) * '' Megastomia atrisaxi'' (Saurin, 1959) * '' Megastomia bedoti'' (Hornung & Mermod, 1924) * '' Megastomia binhdinhensis'' (Saurin, 1958) * '' Megastomia boteroi'' (Schander, 1994) * '' Megastomia broti'' (Hornung & Mermod, 1924) * '' Megastomia canaria'' (Hedley, 1907) * '' Megastomia canina'' Penas & Rolan, 1999 * '' Megastomia caudana'' (Saurin, 1959) * '' Megastomia charneri'' (Saurin, 1959) * '' Megastomia clara'' (Nomura, 1936) * '' Megastomia conoidea'' (Brocchi, 1814) * '' Megastomia conspicua'' (Alder, 1850) * '' Megastomia corimbensis'' Schander, 1994 * '' Megastomia coseli'' Penas & Rolan, 1999 * '' Megastomia desmiti'' (van Aartsen, Gittenberger & Goud, 1998) * † '' Megastomia doliella'' (Laws, 1940) * '' Megastomia gea'' (Bartsch, 1915) * '' Megastomia gestroi'' (Hornung & Mermod, 1924) * '' Megastomia gestroides'' (Saurin, 1958) * '' Megastomia gilsoni'' (Dautzenberg, 1912) * '' Megastomia gordonis'' (Yokoyama, 1922) * '' Megastomia gutta'' Penas & Rolan, 1999 * '' Megastomia interolineata'' (Nomura, 1936) * '' Megastomia jacundior'' (Nomura, 1937) * † '' Megastomia kaawa'' (Laws, 1940) * '' Megastomia kamakurana'' (Nomura, 1938) * '' Megastomia kuroshiwo'' (Nomura, 1939) * '' Megastomia makiyamai'' (Nomura, 1937) * † '' Megastomia marginalis'' (Laws, 1940) * '' Megastomia martinae'' (Saurin, 1959) * '' Megastomia metayei'' (Saurin, 1959) * '' Megastomia miuraensis'' (Nomura, 1937) * '' Megastomia neoexigua'' (Nomura, 1937) * '' Megastomia nhatrangensis'' (Saurin, 1959) * '' Megastomia pagodiformis'' (Schander, 1994) * '' Megastomia palmaensis'' Penas & Rolan, 1999 * '' Megastomia pernettae'' (Saurin, 1959) * '' Megastomia pseudoperforata'' (Nomura, 1939) * '' Megastomia pyramidata'' (Laseron, 1951) * '' Megastomia regina'' (Thiele, 1925) * '' Megastomia ruris'' Penas & Rolan, 1999 * '' Megastomia sagamiana'' (Nomura, 1937) * '' Megastomia saurini'' (Corgan & Van Aartsen, 1998) * '' Megastomia serenei'' (Saurin, 1959) * † '' Megastomia simemacula'' (Laws, 1940) * '' Megastomia simplex'' (Angas, 1871) * '' Megastomia sitirighamana'' (Nomura, 1938) * '' Megastomia subcarina'' (Laseron, 1951) * '' Megastomia subcostata'' (Saurin, 1959) * '' Megastomia subscripta'' (Schander, 1994) * '' Megastomia sulcifera'' (E.A. Smith, 1871) * '' Megastomia supramarginata'' (Saurin, 1959) * '' Megastomia tenera'' (A. Adams, 1860) * '' Megastomia troncosoi'' Peñas & Rolán, 2002 * '' Megastomia turbiniformis'' Penas & Rolan, 1999 * '' Megastomia turukoae'' Nomura, 1938 * '' Megastomia unifilosa'' (Saurin, 1962) * † '' Megastomia venusta'' (Laws, 1940) * '' Megastomia vero'' (Nomura, 1937) * '' Megastomia winfriedi'' Penas & Rolan, 1999 * '' Megastomia yabehisakatsui'' (Nomura, 1936) * '' Megastomia yukikoae'' (Nomura, 1938) * '' Megastomia zaleuca'' (Melvill, 1910) * '' Megastomia zijpi'' (van Aartsen, Gittenberger & Goud, 1998) ;The following species were brought into synonymy: * ''Megastomia elata'' (Saurin, 1958): synonym of ''Megastomia saurini'' (Corgan & Van Aartsen, 1998) * ''Megastomia conoidea'' (Brocchi, 1884: synonym of '' Odostomia conoidea'' (Brocchi, 1814) * ''Megastomia conspicua'' (Alder, 1850): synonym of ''

Odostomia conspicua ''Odostomia conspicua'' is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.Rosenberg, G.; Gofas, S. (2011). ''Odostomia conspicua'' Alder, 1850. Accessed through: World Register of M ...

'' Alder, 1850

References

Monterosato T. A. (di) (1884). ''Nomenclatura generica e specifica di alcune conchiglie mediterranee.'' Palermo, Virzi, 152 pp.

External links

GenBank

World Register of Marine Species
Pyramidellidae Gastropod genera {{Pyramidellidae-stub