Known from the Mediterranean to British Isles, but apparently very rare.
Locality: Baleal, Portugal. Depth: 5 m. Length: 5.6 mm. 30 July 2005. rock, near a shipwreck. Photographer: Joao Pedro Tojal Loia Soares Silva ,
Animal translucent with a speckling of opaque white all over. The white forms concentrated patches at the base of the cerata and on the head. The cerata are also covered in white speckling, which often concentrates inot a white band in the upper half of each ceras. The white speckling is absent at the translucent tip of each ceras which appears greyish black. The basal half of the rhinophores is translucent clear, while the upper half is bright yellow. The oral tentacles are similarly coloured, but in some specimens yellow pigment can be found down the whole length of the tentacles. The rhinophores are smooth. This aeolid is reported to grow to approximately 13 mm in length.
- Picton, B.E. & Morrow, C.C. (1994) A Field Guide to the Nudibranchs of the British Isles. Immel Publishing: London. 1-143.
- Schmekel, L (1967) Dicata odhneri n. sp., n. gen., ein neuer Favorinide (Gastr. Opisthobranchia) aus dem Golf von Neapel. Pubblicazione Stazione Zoologisches Napoli, 35: 263-273.
- Schmekel, L. & Portmann, A (1982) Opisthobranchia des Mittelmeeres, Nudibranchia und Saccoglossa. Fauna e Flora del Golfo Napoli, 40: 1-410. Springer-Verlag: Berlin
Rudman, W.B., 2005 (August 11) Dicata odhneri Schmekel, 1967. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/dicaodhn