The Asian drill, Ocinebrellus inornatus (Récluz, 1851), originally distributed in East-Asian waters, is currently found in the Oosterschelde near Yerseke (Zuid-Beveland) and Gorishoek (Tholen). More than fifty specimens have been observed so far, some of them on eggs. This invasive species is known to be dispersed by human oyster transport. An older import (1971) of a related species is confirmed here as belonging to Ocenebra erinacea (Linné, 1758). Egg capsules are illustrated for comparison.

Spirula

CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel")

Nederlandse Malacologische Vereniging

J. Goud, F.F.L.M. Titselaar, & G. Mulder. (2008). Weer een 'verstekeling': de Japanse Stekelhoren Ocinebrellus inornatus (Récluz, 1851) (Gastropoda, Muricidae) levend aangetroffen in de Oosterschelde. Spirula, 365, 134–136.