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I quote Gosliner & Willan (1991): "The cerata are translucent white basally, with the opaque white digestive gland giving the cerata an overall white appearance. Near the middle of each ceras, an opaque white transverse band is present on its surface. More distally, the ceras is again translucent and a golden-yellow-orange enlarged portion of the digestive gland is visible. A subapical transverse ring of translucent purple is present just below the translucent white apex."
I quote Bill Rudman's Sea-Slug Forum:"The basal two-thirds of the cerata are either translucent white or dusted with white, and the duct of the digestive gland is opaque white. There is sometimes a distinctive opaque whitish band around the cerata at the upper edge of the white region of each ceras. Above the white band there is another translucent region, then a band of golden-yellow or orange. Above this there is a subapical transverse ring of dark translucent purple. The ceratal tip is translucent white."
Pictures showing the papillae on the rhinophores are on Robert F. Bolland's website The Okinawa Slug Site, and at the Sea-Slug Forum.
Gosliner, T. & R. C. Willan. 1991. Review of the Flabellinidae (Nudibranchia: Aeolidacea) from the tropical Indo-Pacific, with the descriptions of five new species. Veliger 34(2):97-133.
The holotype of Flabellina delicata was collected from Papua New Guinea (PNG), there are records of it from Natal, South Africa, Okinawa, Japan, and the Marshall Islands, NUDIPIXEL has also pictures from Kilifi Creek, Kenya and Queensland, Australia.
More information on Flabellina delicata are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 26 August 2016, Flabellina delicata Gosliner & Willan, 1991
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Flabellina_delicata.htm