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Ceratosoma sp. 01  Genus: J.E. Gray in M.E. Gray, 1850

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This is an undescribed species of the genus Ceratosoma, I label it Ceratosoma sp. 01 to distinguish it from other species of Ceratosoma.
Ceratosoma sp. 01 is characterized by its translucent pinkish to translucent blueish-grey body colour, by a broad whitish-cream mantle margin, and by a white patch or white and yellowish lines in the center of the notum. The rhinophores and gills are translucent-grey. This species is smaller (up to 12 mm) and less lobate than other species of Ceratosoma. Let me quote www.seaslugsofhawaii.com:
"Although this species is unlike most Ceratosoma spp in size and form, Terry Gosliner (pers. com.) reports that both DNA and morphology support placing it in the genus."
This species is as Ceratosoma sp. 2 in IPN at page 276.
There are many pictures of it online from Japan on www.umiushi-zukan.com, and from Hawaii on www.seaslugsofhawaii.com.
The website NUDIPIXEL is down, that is the pictures from Watamu, Kenya, Ambon, Indonesia, Long Dong, Taiwan, Koh Phi Phi, Thailand, and from Puerto Galera, Philippines are gone.
Reference:
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426pp.
How to cite:
Köhler, E. (2018), published 22 March 2018, Ceratosoma sp. 01  Genus: J.E. Gray in M.E. Gray, 1850
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Ceratosoma_sp_01.htm