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The pictures #1 and #2 were posted on 19 June 2003 at these websites as Hypselodoris bullockii (Collingwood, 1881),
I moved them on 18 August 2011 to Hypselodoris sp. 07 Genus: Stimpson, 1855.
This species is most likely as Hypselodoris sp. 8 in IPN at page 268.
Pretty similar are:
Hypselodoris bullockii which differs by the pale pinkish background colour, and by thin white marginal band,
Hypselodoris sp. 08 which differs by the colour of the gills,
Hypselodoris sp. 10 which differs by the dark blueish-purple colour of the rhinophore clubs.
Hypselodoris apolegma which differs by the purple colour, and by the reticulate white edging of the mantle.
Thorunna halourga which differs by the broad white mantle margin, and by the low gill pocket.
This picture shows a specimen mating Hypselodoris sp. 08, this indicates they are most probably the same species, I keep them seperate for now.
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 29 August 2017, Hypselodoris sp. 07 Genus: Stimpson, 1855
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Hypselodoris_sp_07.htm