Chromodoris striatella  Bergh, 1876

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Chromodoris striatella is characterized by a white body with thin browish-black longitudinal lines and large brownish patches, and by an orange marginal band at the mantle. The gills and rhinophores are orange-red opaque white spots
One of my favorite divesites is "Gato Cave" at Gato Island, pretty close to Malapascua Island. Here you find dozens of sea-slugs during each dive - and here I discovered my first Chromodoris striatella. This shot shows a specimen laying eggs.
Pretty similar are:
Chromodoris lineolata which lacks the large brown patches on the mantle, and has a black line at the inner edge of the orange border and differs by opaque white spots on the black gills and rhinophores. It is black with white lines, which looks like white white with black lines.
Chromodoris burni which lacks the opaque white spots on the gills and rhinophores.
Chromodoris mandapamensis which is densely covered with rounded dark brown spots.
More information on Chromodoris striatella are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 8 March 2017, Chromodoris striatella  Bergh, 1876
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Chromodoris_striatella.htm