Trinchesia caerulea (Montagu, 1804)
Cuthona caerulea (Montagu, 1804)
Trinchesia caerulea (Montagu, 1804)
Western Mediterranean to southern Norway, (Brazil and Florida records may be related species) (GBIF map). Western coasts of Britain from Dorset to Shetland and Kincardineshire. Records mainly sublittoral (UK interactive map. NBN).
Cuthona viridis (EML) resembles form of C. caerulea [6] with green digestive gland and only a single orange band of ceratal pigment.
- Cerata have green digestive gland and swollen white or yellow internal cnidosacs filling tips, (Don’t confuse with surface pigment).
- White or pale yellow pigment marks on front of cerata, and, sometimes, in a thin indistinct subterminal ring.
Alder, J. & Hancock, A. 1845-1855. A monograph of the British nudibranchiate mollusca. London, Ray Society.
Thompson, T.E. & Brown, G.H. 1984. Biology of opisthobranch molluscs 2. London, Ray Society.
Current taxonomy; World Register of Marine Species (WoRMS)
Irish distribution maps and prey organisms
Picton, B.E. & Morrow, C.C., 2010. Encyclopedia of Marine Life of Britain and Ireland (EML).
A variable species, but all forms have intermediaries.
Body (excluding appendages)