''Pseudococculina rugosoplicata'' is a species of small

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family

Pseudococculinidae Pseudococculinidae is a family of small sea snails or false limpets, marine gastropod mollusks in the superfamily Lepetelloidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Gofas, S. (2012). Pseudococculinidae. Accesse ...

, the false

limpet Limpets are a group of aquatic snails that exhibit a conical shell shape (patelliform) and a strong, muscular foot. Limpets are members of the class Gastropoda, but are polyphyletic, meaning the various groups called "limpets" descended indep ...

s.Bouchet, P. (2012). ''Pseudococculina rugosoplicata'' Schepman, 1908. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=579371 on 2013-02-02

Description

The small, white shell has an elevated form. It is oval and thin. The margin rests entirely on a plane surface. The front slope is the largest and has a convex shape. The side slopes are irregularly convex, being slightly compressed at some distance from the apex. The posterior slope is slightly concave. The apex is blunt, placed at about ⅔ of the total length. There is no nucleus caused by a strong erosion of the apex. The sculpture consists of irregular concentric rugosities or wrinkles, generally more distant from each other towards the apex, more crowded towards the margin, with a tendency to form lamellae. On some parts the upper side of the rugosities has coarse, short, riblike radiant striae, wanting in other places, perhaps by erosion. The inside of the shell has a smooth surface. The rhachidian tooth of the

radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food ...

is elongate with convex sides. It has no reflected cusp, the upper margin being only irregularly waved. Near the base an oval spot seems to be thickened. The first lateral tooth is triangular, also without a distinct cusp, but with a reflected or thickened upper margin. It is followed by three laterals, which are little different from each other, with a winged body, having the appearance of being turned outwards, the cusp standing at the distal side. Their cusps are simple. The next lateral has a quadrate body with a thickened stalk The rhachidian tooth stands at its median line, and a cusp consisting of a sharp tooth at the proximal side, and a wing-like part on the distal side, with a slightly denticulate margin. Of the numerous uncini, the proximal ones, which are the largest, have simple cusps, while those placed more outwards have small denticles.Schepman M.M. (1909), The prosobranchia of the Siboga Expedition
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Distribution

This marine species occurs in the Indo-Australian archipelago.

References

External links

To Biodiversity Heritage Library (3 publications)

To World Register of Marine Species
{{Taxonbar, from=Q7254672 Pseudococculinidae Gastropods described in 1908