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There are according to the South-west Indian Ocean Flatworm site at least 3 species of the genus Pseudoceros with a velvety black body colour and whitish marginal bands:
- Pseudoceros prudhoei Newman & Cannon, 1994 with an inner band of sky blue and an outer band of yellow or cream
- Pseudoceros depiliktabub Newman & Cannon, 1994 with the inner band dark-green, middle band yellow-cream and rim bright orange
- Pseudoceros flavocanthus Newman & Cannon, 1994 with a purple-blue marginal band becoming white and an outer band bright yellow
The above specimen does not fit any of them -
I label it Pseudocerotidae sp. 05, because my best guess is that it should be placed in the family Pseudocerotidae Lang, 1884.