Dermatobranchus tuberculatus  Gosliner & Fahey, 2011

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Dermatobranchus tuberculatus has recently been described, (published in February 2011) in:
Gosliner, Terrence M. & Fahey, Shireen J., 2011, Previously undocumented diversity and abundance of cryptic species: a phylogenetic analysis of Indo-Pacific Arminidae Rafinesque, 1814 (Mollusca: Nudibranchia) with descriptions of 20 new species of Dermatobranchus.
Zoological Journal of the Linnean Society. 2011 February; 161(2): 245–356.
This text is completely online at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3073124/
Dermatobranchus tuberculatus is characterized by rounded tubercles on its mottled tan notum.
Let me quote Gosliner & Fahey, 2011: "The notum is rough and tuberculate with randomly distributed rounded tubercles on the surface. There are no distinct longitudinal ridges in any of the specimens examined. The oral veil extends forward and has rounded corners. The widely spaced, club-shaped rhinophores are behind the oral veil."
It has no longitudinal ridges, which are present in many species of Dermatobranchus. The stalks of the rhinophores are mottled whitish-tan, the bulbs are brown with white tips. The oral veil is white with a few dark brown specks, and has pink to purple margin.
It is Dermatobranchus sp. 17 in IPN at page 314:
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.
This species was posted on 15 June 2005 at these websites as Dermatobranchus sp. G  Genus: van Hasselt, 1824, on 29 July 2011 changed into
Dermatobranchus sp. 07  Genus: van Hasselt, 1824. This specimen looks exactly like figure 74 "G" in Gosliner & Fahey (2011).
Pretty similar are:
Dermatobranchus pustulosus, which differs by the brownish mottled mantle, and by the very bulbous rhinophores.
Dermatobranchus fasciatus, which differs by longitudinal ridges, and by two transverse brownish bands/patches, and lacks rounded tubercles, and
Dermatobranchus semilunus, which differs by longitudinal ridges, and by the U-shaped brownish patch at the anterior third of the notum, and lacks rounded tubercles.
How to cite:
Köhler, E. (2016), published 20 September 2016, Dermatobranchus tuberculatus  Gosliner & Fahey, 2011
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Dermatobranchus_tuberculatus.htm