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Pretty similar is Thecacera picta Baba, 1972, which lacks velar tentacles, and differs by extrabranchial and extrarhinophoral processes.
This species is as Polycera sp. 1 in IPN at page 103.
There are pictures of this species from Komodo Island, Indonesia and from Bali Island, Indonesia online.
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 10 February 2018, Polycera sp. 07 Genus: Cuvier, 1817
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Polycera_sp_07.htm