Stacked from 36 images. Method=B (R=8,S=4)
Stacked from 32 images. Method=B (R=8,S=4)
Species ID
OC-SP-0002596
Discovered
Phylum
Mollusca
Species ID
OC-SP-0002596
Provisional Species Name
Zafrona sp_MNHN_IM_2000_40432
Lowest Valid Taxon Name in WoRMS
Zafrona
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Family
Columbellidae
Genus
Zafrona
Taxonomic Remarks
This species belongs to the same group as both preceding species. It differs from Z. sp1 by its more elegant shell, higher number of both axial ribs and spiral cords, different aperture form with a much thinner outer lip with much weaker denticles and a weaker sinus. It differs from Z. sp2 by its bigger size, less shouldered whorls, not so strong axial and spiral ribbing, the higher number of axial ribs and spiral cords, the wider aperture and different color pattern.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Shell of average for the genus, adult size up to 3.3 mm; fusifom, elongate. Rounded whorls. Suture slightly impressed. Protoconch paucispiral and elongate, consisting of about 1.25 whorls. First part of protoconch smooth, last part close to the trasition to the teleoconch whit very weak axial cords. Transition to teleoconch clearly visible. Teleoconch consisting of about 3.5-3.6 whorls. Axial sculpture of strong axial ribs with interspaces of about the same width as the ribs on all whorls. There are 13 of these axial ribs on the first whorl, increasing to 16 on the last whorl. Spiral sculpture consisting of narrow spiral cords, which overrun the axial sculpture, hereby creating a knobby appearance on the intersections of axial and spiral sculpture . There are five of these cords on the first whorl increasing to six cords on the penultimate whorl. Last whorl with 10 of these cords of which the adapical most is very weak. These cords go over in the basal cords, which ventrally range to about 2/3 of the columellar height. Aperture average width for the genus, about 44% of shell height. Outside of outer lip slightly thickened, with the continuation of the spiral sculpture. Inside of outer lip with a weak sinus on the adapical end and five rather weak denticles near the edge of the aperture, two most adapical ones and the most abapical one stronger, the two in between very weak. Columellar callus clearly present, slightly raised, with a weak ridge of semi-merged denticles on the abapical side. Parietal callus clearly present. Siphonal canal short, open, slightly recurved. Teleoconch whorls off-white to cream. Aperture and columella white. Protoconch white with some cream near the nucleus. Height of holotype: 3.3 mm
Ecology
Direct developing species with paucispiral protoconch, so non planctotrophic larvae. Most likely endemic.
Distribution
MNHN SPANBIOS expedition: stn DW5239, 18°07,3’S, 163°02’E, 249-251m (holotype).
Scientific Name Authorship
Monsecour, Kevin
Stacked from 36 images. Method=B (R=8,S=4)
Stacked from 32 images. Method=B (R=8,S=4)
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