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Goniobranchus aureopurpureus (Collingwood, 1881) [Chromodoris]

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Goniobranchus aureopurpureus is characterized by a white mantle with yellow to dull brown irregular spots all over the central region. At the edge of the mantle is a band of diffuse watery purple and on its inside edge is a submarginal band of large deep purple spots. The rhinophore clubs are heavily pigmented with purple or reddish brown and edged in white. The gills are translucent purple or red-brown, and also edged with white.
pretty similar are:
Goniobranchus collingwoodi which differs by its large central reddish / orange-brown patch, and irregular purple border of the mantle, then a broad region in which there are small yellow and larger purple spots.
Goniobranchus tennentana (Chromodoris tennentana) which differs by its large central reddish / orange-brown patch, and bluish purple border of the mantle, the white region inside it has yellow spots. It has large purple spots each surrounded by a white ring restricted to the central patch.
Goniobranchus rufomaculatus which differs by its translucent white gills which are edged in opaque white.
This species was posted on 12 May 2004 on these websites as Chromodoris aureopurpurea  Collingwood, 1881,
Johnson & Gosliner (2012) moved it to the reerected ("rescued from synonymy") genus Goniobranchus  Pease, 1866.
Reference:
Rebecca Fay Johnson & Terrence M. Gosliner. 2012.
Traditional Taxonomic Groupings Mask Evolutionary History:
A Molecular Phylogeny and New Classification of the Chromodorid Nudibranchs. online at
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0033479
More information on Goniobranchus aureopurpureus as Chromodoris aureopurpurea are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 2 March 2016, Goniobranchus aureopurpureus (Collingwood, 1881)
available from http://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Goniobranchus_aureopurpureus.htm