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MarBEF Data System |
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MolluscaBase taxon details
original description
Gofas S. (2007). Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts. <i>Journal of Natural History 41(13–16)</i>: 779–885
page(s): 852-854 [details]
From editor or global species database
Biology Type of larval development: direct (non planktotrophic) denoted by paucispiral protoconch. [details]
Diagnosis Shell 1.5 to 2.0 mm high, with protoconch of a little more than 1.25 whorls, and teleoconch of 3.25 to 3.75 whorls. Protoconch with spirally oriented wrinkles; teleoconch with spire whorls angulated, with strong axial folds each bearing a distinct projection at the angle. Body whorl rounded abapically with three to four hardly distinct spiral cords on the periumbilical area. Teleoconch with characteristic “Porosalvania” microsculpture consisting of minute (ca. 1 µm) pits randomly distributed, visible only under high magnification of scanning electron microscope.
Outer lip thickened externally, mostly in the adapical part at a short distance from the edge; smooth inside. Shell white
This small species is distinguished from the sympatric P. solidula Gofas, 2007 by being smaller, stouter, with a marked angle on the axial folds, and in having a wrinkled protoconch whereas all the other species of Porosalvania have a smooth one. [details]
Distribution Great Meteor seamount, moderately common at 330 m. Hyères seamount, rare at 310 m [details]
Type locality Meteor seamount (30º09.9'N, 28º28.1'W, 330 m). [details]
Type locality Great Meteor seamount (30°09.9'N, 28°28.1'W, 330 m). [details]
From editor or global species database
Unreviewed
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