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(Delle Chiaje, 1822)

Description
Definitive nectophore [Rosacea cymbiformis ]: generally less rounded and slightly more flattened than those of Rosacea plicata. The deep, gutter-like hydroecium extends the length of the ventral surface, resulting in the relatively small nectosac being displaced dorsally.
Eudoxid [R.cymbiformis-eudox ]: Bract less compact than that of Rosacea plicata, with the dorsal bracteal canal arising proximal to the spur on the left hydroecial canal.
Whole polygastric stage: R.cymbiformis-habitus R.cymbiformis-extended.

Size
Nectophore of adults up to 30 mm in length.

Depth range
In the 200-500 m depth range. Specimens often have been caught by SCUBA divers close to the surface indicating that it may be a shallower-living species than Rosacea plicata.

Remarks
This species closely resembles Rosacea plicata and it may be difficult to distinguish them.

Distribution in the North Sea
Northern North Sea; recorded from the coasts of Scotland.

World distribution
North Atlantic Ocean and the Mediterranean Sea. (Probably more common than records suggest due to difficulties in identification).

[After Kirkpatrick and Pugh, 1984]

Rosacea cymbiformis