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Very similar are:
Dendrodoris albopurpura which differs by the whitish encircled pustules each tipped with a brown or purple spot,
Dendrodoris elongata which differs bys rows of whitish star-like markings, and
Dendrodoris sp. in IPN at page 279, which differs by a fine network of grey pigment, and by the rhinophores wich have subapical black pigment
This specimen was misidentified and posted at these websites on 3 December 2003 as Dendrodoris elongata, though it clearly lacks the stellate whitish markings.
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.
How to cite:
Köhler, E. (2017), published 12 March 2017, Dendrodoris albobrunnea Allan, 1933
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Dendrodoris_albobrunnea.htm