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Phyllodesmium sp. 04 is characterized by its rounded, elongate cerata with several longitudinal lines of brown pigmentation, looking silimar to the closed polyp of Xenia softcoral. The apices of the cerata are curved. The rhinophores are relatively long, their colour varies from translucent tan to translucent orange-red.
Pretty similar are at least 2 " Xenia Mimics":
Phyllodesmium jakobsenae which has flattened, slightly coiled cerata with brownish pigment along the edges, near the tip and
Phyllodesmium sp. 08 on MEDSLUGS on which Ingo Burghardt writes "the brownish pigments on the cerata are arranged different, the cerata are thin and also arranged different from Phyllodesmium jakobsenae." I think this Phyllodesmium sp. 08 and as the above featured Phyllodesmium sp. 04 are the same species.
This species was posted on 1 October 2003 on these websites as Phyllodesmium sp. D Genus: Ehrenberg, 1831.
For some genera, such as Trinchesia was the alphabet almost through. I had to change the distinguishing alphabetic character into a number. I have chosen 2-digit numbers, even though '01' looks a little bit stupid, and now is only the genus italic written.
More information on Phyllodesmium sp. 04 as Phyllodesmium sp. 9 are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 1 January 2017, Phyllodesmium sp. 04 Genus: Ehrenberg, 1831
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Phyllodesmium_sp_04.htm