Stacked from 36 images. Method=B (R=8,S=4)
Stacked from 26 images. Method=B (R=8,S=4)
Species ID
OC-SP-0002572
Discovered
Phylum
Mollusca
Species ID
OC-SP-0002572
Provisional Species Name
Retizafra sp_MNHN_IM_2000_40342
Lowest Valid Taxon Name in WoRMS
Retizafra
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Family
Columbellidae
Genus
Retizafra
Taxonomic Remarks
This species is closest to R. zingiber Monsecour & Monsecour, 2016 with which it is found sympatrically. It differs from this species by its smaller adult size, its higher number of both axial and spiral ribs, the wider aperture, the lack of a columellar rim and a different color pattern.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Shell of average size for the genus, adult size up to 3 mm; fusifom with clearly rounded whorls. Semi-translucent. Suture slightly impressed. Protoconch paucispiral, consisting of about 1.3 smooth whorls. Transition to teleoconch clearly visible. Teleoconch consisting of 3.1 whorls. Axial sculpture of strong axial ribs on all whorls. About 17 ribs on the first teleoconch whorl to 21 ribs on the final whorl. The last axial rib close to the aperture is much stronger. Spiral sculpture of flattened cords with narrow interspaces on all whorls, which overrun the axial ribs. On the first teleoconch whorls these cords are rather obsolete. On the second teleoconch whorl these spiral cords are more visible, about 12 in number. On the last whorl about 19 of these cords are present, going over in the basal cords. Basal cords ventrally ranging to just above mid-columellar height. Aperturer rather wide, about 46% of shell height. Outside of outer lip with continuation of the basal cords. Inside of outer lip with a weak sinus on the adapical end and 4 denticles, diminishing in strength to the abapical end. Columellar callus thick, slightly raised, without denticulation. Parietal callus clearly present. Siphonal canal short, open. Teleoconch whorls off white with some irregular cream markings. The inside of the aperture in the base color. Columellar and parietal callus whitish. Protoconch white. Height of holotype: 2.8 mm
Ecology
Direct developing species with paucispiral protoconch, so non planctotrophic larvae. Most likely endemic.
Distribution
SPANBIOS expedition MNHN: stn DW5166, 18°40’S, 163°16’E, 556-577m, 3 dd; stn DW5167, 18°41,2’S, 163°15,9’E, 568-575m, 1 dd (holotype), 1 dd juv.
Scientific Name Authorship
Monsecour, Kevin
Stacked from 36 images. Method=B (R=8,S=4)
Stacked from 26 images. Method=B (R=8,S=4)
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