Cuthona rubescens from continental Europe

October 2, 2002
From: Peter H. van Bragt

Hello Bill,
Until recently Cuthona rubescens was only found on a limited number of sites on the western part of the British Isles.

However now we know that it is also present on the continental coast of Europe. In June 1999, Jussi Evertsen found a single specimen in the Trondheim Fjord (Norway). In June 2002 I personally found three specimen on Halecium halecium at the Westbout, Oosterschelde (South-west, the Netherlands). And Marianne Ligthart found in the same month again one specimen at Burghsluis, which is only three kilometers to the east of the first site in the Netherlands. We also found the spawn of this species. I believe that it is not as rare as we might consider it to be at present. Its small size and nondescript anatomy makes it rather cryptic. I am sure most divers just do not recognise it.

Greetings from the Netherlands
Peter H. van Bragt

Bragt, P. H., 2002 (Oct 2) Cuthona rubescens from continental Europe. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Peter,
This is an interesting find. It's strange to think that new finds like this can still be made in European waters.
Best wishes,
Bill Rudman


Cuthona rubescens

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