MOLLUSCA : Littorinimorpha : RissoidaeSNAILS, SLUGS, ETC.

Onoba (Onoba) semicostata (Montagu, 1803)
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Distribution Map from NBN: Onoba (Onoba) semicostata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Onoba (Onoba) semicostata at iNaturalist World Species Observations database.

WoRMS: Onoba (Onoba) semicostata at World Register of Marine Species. Accepted name: Onoba semicostata (Montagu, 1803). AphiaID: 141320.

Classification: Biota; Animalia; Mollusca; Gastropoda; Caenogastropoda; Littorinimorpha; Rissooidea; Rissoidae; Onoba

 Picton, B.E. & Morrow, C.C. (2024). Onoba (Onoba) semicostata. (Montagu, 1803). [In] Encyclopedia of Marine Life of Britain and Ireland.
https://www2.habitas.org.uk/marbiop-ni/speciesaccounts.php?item=W3400. Accessed on 2025-01-09