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"The notal tubercles are most commonly single and isolated (although occasionally two or three coalesce), have black bases and, their sides and apices are dark pink to red. They are evenly distributed over the dorsum. Individual tubercles are quite tall (up to 3 mm high) with relatively straight sides and a rounded summit. Tubercles around the mantle margin are smaller."
Brunckhorst's material of this species ranged in size from 22 mm to 63 mm, depth from 0 m to 4 m.
There is only one picture from the Philippines online, taken at General Santos. Almost all pictures are misidentified. The above picture is a scan from Brunckhorst (1993), a specimen from the Phi Phi Islands, Thailand.
The specimens posted on 29 August 2003 at these websites as Phyllidiella nigra (van Hasselt, 1824) [Phyllidia], were misidentified and had been changed
on 4 January 2018 into Phyllidiella sp. 01 Genus: Bergh, 1869 and into Phyllidiopsis burni.
Brunckhorst, D.J. (1993) The systematics and phylogeny of Phyllidiid Nudibranchs (Doridoidea).
Records of the Australian Museum, Supplement 16: 1 - 107.
More information on Phyllidiella nigra are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2018), published 4 January 2018, Phyllidiella nigra (van Hasselt, 1824)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Phyllidiella_nigra.htm