Clelandella miliaris

Classification (WoRMS)

Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Mollusca · Class: Gastropoda · Order: Trochida · Family: Trochidae · Genus: Clelandella.

Accepted name: Clelandella miliaris · Authority: (Brocchi, 1814) · Taxonomic status: accepted · AphiaID: 141774.

Synonyms and superseded combinations recorded for this taxon: Calliostoma (Ampullotrochus) miliaris (Brocchi, 1814); Calliostoma miliaris (Brocchi, 1814); Clelandella clelandi (W. Wood, 1828); Jujubinus aureus Monterosato, 1890; Jujubinus clelandi (W. Wood, 1828); Jujubinus miliaris (Brocchi, 1814); Trochus clelandi W. Wood, 1828; Trochus martini T. Brown, 1839; Trochus miliaris Brocchi, 1814; Trochus millegranus R. A. Philippi, 1836; Trochus millegranus var. pyramidata Jeffreys, 1865.

Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=141774 (CC BY 4.0). Accessed 2026-09-23.

Biology and life history (SeaLifeBase)

Measured values published by SeaLifeBase for Clelandella miliaris. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.

Habitat zone: benthic.

Source: SeaLifeBase species summary (SpecCode 1295) — https://www.sealifebase.se/summary/Clelandella-miliaris.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-23.

Distribution and occurrence records (GBIF)

1,547 georeferenced occurrence records for Clelandella miliaris are published through GBIF from 20 countries or marine areas. The map above plots 215 distinct locations from a sample of 1,547 records, omitting 88 inland records that carry an institution's coordinates rather than a collection site; it shows where the species has been observed and reported, not a modelled range.

Most records by country or area: United Kingdom of Great Britain and Northern Ireland (650); Norway (511); Sweden (214); France (77); Italy (34).

The full country table, WoRMS marine regions and the sampling notes are on this species' Distribution page.

Source: GBIF Occurrence Search (taxonKey 4358036) — https://www.gbif.org/occurrence/search?taxon_key=4358036&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=141774 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.

Description and natural history (Wikipedia)

The size of the shell varies between 7 mm and 18 mm. The imperforate, rather thin, but pretty solid shell has a strictly conical shape. It is whitish or yellowish, with more or less obvious longitudinal flames, often reduced to a few spots on the ribs and a row of spots at the periphery of each whorl. The surface is densely finely sculptured by spiral lirae crossed by very regular oblique lamellae, producing a clathrate pattern. The spiral lirae number about 6 on each whorl, but often double as many, by the intercalation of riblets in the interstices. The periphery has a prominent keel, cord-like, with secondary spiral striae, or bifid, cut into compressed granules, somewhat prominent above the sutures. The base has about 8 concentric ribs. The interstices are radiately striate, sometimes with a central riblet. The spire has a conical shape with about 7 whorls. The periphery is acutely angled. The base of the shell is flat. The aperture is quadrangular. The short columella is nearly straight.

This marine species has a wide distribution. It occurs off Lofoten Islands, the North Sea (Norway to Gibraltar), off Cape Verde Islands, West Sahara and Mauritania; in the Mediterranean Sea and the Adriatic Sea. In the Baltic Sea it has become a vulnerable species.

Source: Wikipedia: Clelandella miliaris — https://en.wikipedia.org/wiki/Clelandella_miliaris (CC BY-SA 4.0). Accessed 2026-09-23.

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