Chelidonura pallida  Risbec, 1951

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Chelidonura pallida is characterized by its white body with a black margin, followed by an orange-yellow band at the parapodia and 'tails', it has a large left "tail".
Pretty similar is Chelidonura electra which lacks the black margin.
More Information on Chelidonura pallida are on Bill Rudman's Sea Slug Forum!
How to cite:
Köhler, E. (2017), published 17 November 2017, Chelidonura pallida  Risbec, 1951
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Chelidonura_pallida.htm