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Pretty similar is Tubulophilinopsis pilsbryi which has no blue markings.
Species of Tubulophilinopsis are usually found burrowing through sand or mud.
This species was posted on 22 June 2004 at these websites as Philinopsis cf. reticulata (Eliot, 1903) [Doridium], Zamora-Silva & Malaquias (2017) moved it
into the new genus Tubulophilinopsis Zamora-Silva & Malaquias, 2017.
Andrea Zamora-Silva and Manuel António E. Malaquias Molecular phylogeny of the Aglajidae head-shield sea slugs (Heterobranchia: Cephalaspidea): new evolutionary lineages revealed and proposal of a new classification
Zoological Journal of the Linnean Society, 2017, XX, 1-51
available online at https://academic.oup.com/zoolinnean/advance-article-abstract/doi/10.1093/zoolinnean/zlx064/4584517
How to cite:
Köhler, E. (2018), published 18 January 2018, Tubulophilinopsis cf. reticulata (Eliot, 1903)
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Tubulophilinopsis_reticulata_cf.htm