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Let me quote Moore & Gosliner (2014):"Specimens are often found crawling on a red gorgonian octocoral in the genus Acabaria. This is likely the prey of this species, but actual feeding has not been observed."
This species was posted on these websites on 12 April 2012 as Phyllodesmium sp. 07 Genus: Ehrenberg, 1831,
It is Phyllodesmium sp. 4 in IPN, page 389, and Phyllodesmium sp. 5 on the Sea Slug Forum.
Pretty similar are:
Phyllodesmium opalescens which differs by a series of white median diamonds, and has relatively straight digestive gland ducts,
Phyllodesmium acanthorhinum which lacks the white median line, but has a network of white lines on the head and white specks on the notum, distinctive are the papillate rhinophores.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs. Sea Challengers Natural History Books.
Gig Harbor, Washington. 426 pp.
Moore E. & Gosliner T. (2014). Additions to the genus Phyllodesmium, with a phylogenetic analysis and its implications to the evolution of symbiosis.
The Veliger. 51(4): 237 - 251.
How to cite:
Köhler, E. (2017), published 23 July 2017, Phyllodesmium undulatum Moore & Gosliner, 2014
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Phyllodesmium_undulatum.htm