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I place it tentatively in the genus Thysanozoon Grube, 1840, it might be as well a species of Acanthozoon Collingwood, 1876, which possess only a single male copulative organ contrary to Thysanozoon.
I have no idea how variable species of Thysanozoon are, it is possible, that this species and
Thysanozoon sp. 03 and Thysanozoon sp. 04 are the same species, for now I keep them seperate!
How to cite:
Köhler, E. (2018), published 20 March 2018, Thysanozoon sp. 06 Genus: Grube, 1840
available from https://www.Philippine-Sea-Slugs.com/Look-alike/Platyhelminthes/Thysanozoon_sp_06/Select.htm