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Plakobranchus papua is characterized by an "intense ochre body with white spots scattered all over the dorsum, head, and flanks: closest to the head region, on the anterior side corresponding to 1/4 of the body length, the spots are largest, on 2/4 and 4/4 of the body length the dots are smaller, and on the 3/4 of the body length they are larger, but not as large as on the anterior part of the body. Spots are pale white with a thin yellow outline and with areas with opaque white pigment." Meyers-Muñoz et al. (2016)
The long rolled rhinophores are black with purplish outer tips.The pedal tentacles are translucent white. The foot sole is white with a black tail.
Plakobranchus cf. papua differs from Plakobranchus papua by the colour of the rhinophores which are basally whitish, the outer half black/dark blue and with lighter tips, and by the blue colour of the foot and the 'tail'.
The co-author Bert W. Hoeksema wrote on the above specimen (pers. comment):
"This is an undescribed species. We also found it in Papua but we did not include it in our paper. I found one near Cebu The blue foot sole is typical."
Meyers-Muñoz MA, van der Velde G, van der Meij SET, Stoffels BEMW, van Alen T, Tuti Y, Hoeksema BW (2016) The phylogenetic position of a new species of Plakobranchus from West Papua, Indonesia (Mollusca, Opisthobranchia, Sacoglossa).
ZooKeys 594: 73-98. doi: 10.3897/zookeys.594.5954
How to cite:
Köhler, E. (2016), published 10 March 2017, Plakobranchus cf. papua Meyers-Muñoz & van der Velde, 2016
available from https://www.Philippine-Sea-Slugs.com/Sacoglossa/Plakobranchus_papua_cf.htm