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MarBEF Data System |
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WoRMS taxon details
Nomenclatureoriginal description
Gofas, S. (2003). An endemic radiation of Trituba (Mollusca, Gastropoda) on the North Atlantic seamounts. American Malacological Bulletin. 17(1-2): 45-63.
page(s): 49-51 [details] Available for editors  [request]
Othercontext source (Deepsea)
Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online at http://www.iobis.org/ [details]
 Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Biology The type of larval development is not known from direct evidence, but is inferred to be intracapsular from similarity of the larval whorls with those of Cerithiella (see Bouchet and Warén, 1993). There is a multispiral protoconch, but no clear separation protoconch 1/protoconch 2 nor protoconch 2/teleoconch. [details]
Diagnosis Shell up to 10 x 2.2 mm, turriculate, solid, white, with 12-18 whorls. Protoconch ca. 3 whorls, the nucleus moderately protruding, with a pupoid profile, inflated so as to depart slightly from the general spire profile; protoconch whorls moderately convex, less so along the subsutural portion, sculptured with numerous, delicate, evenly spaced, oblique and flexuous ribs.
Teleoconch whorls sculptured with strong subsutural and suprasutural knobs, arranged in two spiral rows which are offset from each other so as to form oblique axial ribs; the suprasutural knobs stronger on the first teleoconch whorl and bordered adapically by a definite spiral line. Body whorl hardly narrowing; its abapical surface smooth and circled by a quite strong keel on which the ribs terminate.
Aperture with a continuous, flaring peristome. Siphonal canal moderately long, parallel sided, inside with columellar and labial lamellae coming moderately close together. Anal canal smaller than the siphonal, moderately curved, pointing sidewards.
This species differs from the two other found on Meteor seamount by the delicately sculptured, inflated, cyrtoconoid protoconch and more cylindrical canal. The morphs of T. constricta Gofas, 2003 with the more accentuated sculpture look quite similar too but the knobs more coalescent axially into ribs and the body whorl is distinctly narrowing.
[details]
Distribution Great Meteor seamount, moderately common in 455-575 m; endemic. [details]
Type locality Meteor seamount (30°02.0'N - 28°22.1'W, 470 m) [details]
Type locality Great Meteor seamount, 30°02.0'N - 28°22.1'W, 470 m. [details]Unreviewed
Habitat Known from seamounts and knolls [details]
From editor or global species database
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