Ocenebra sp.1
Aegean Sea, including Crete and Dardanelles areas.
Predator on mussels in the shallow infralittoral. Above: two young specimens of the edwardsii complex, clade B sensu Barco & al., 2013, northern cluster, from Dardanelles Strait, NE. Aegean. Beach drift, Kepez, Çanakkale, SW. Marmara Region, NW. Turkey. 8,4-12,25mm.
Adults of the clade B, with a much stronger spiral sculture, found in shallow water on big rocks, close to Isognomon bicolor (C. B. Adams, 1845), Agios Charálambos cove, east of Chóra Sfakíon, SW. Crete. 12,2-13,5mm.
Barco & al.: « Specimens collected at four localities across the Aegean Sea (clade B) were indistinguishable morphologically from those classified preliminarily as O. edwardsii from other Mediterranean localities. » But: « The COI and 16S sequences of these specimens were particularly divergent from all the others, allowing the identification of a well-distinct mitochondrial lineage. Furthermore, the mitochondrial data also suggest a well-defined population structure within the group, with three deeply separated clusters corresponding to distinct sampling localities (northern, central and southern Aegean Sea) ». Here, the second adult. Both specimens belong then to the S. Aegean cluster.
A group of Isognomon bicolor nested in a narrow crevice at a few inches below the surface, Agios Charálambos. They are possible preys for edwardsii.
Agios Charálambos under water. Most of the creatures, including edwardsii, inhabit on the surfaces exposed to direct light, while the walls remain nearly denuded.
Central cluster. On stones at 50cm deep, Pórto Láfia, SW.  Évvia island, E. Greece. 15mm.
Northern cluster. 6m deep, feeding on Mytilus galloprovincialis, Çanakkale, Dardanelles. 13,7-13,8mm.

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