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Tyrannodoris luteolineata (Baba, 1936) [Nembrotha]

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Tyrannodoris luteolineata is charaterized by the yellowish-green markings between the rhinophores and the dark green colour with many yellow longitudinal lines. It has large downward pointing oral tentacles which are probably associated with locating and tracking down their prey. It feeds on other seaslugs. The highly pinnate gills are dark, the same colour as the body, but the outer and inner sides of the rachis are green.
Pretty similar is Roboastra tentaculata which differs by its broad orange bands.
The juveniles of Tyrannodoris luteolineata are very similar to Roboastra gracilis, which has no dark line on the gills and lacks the yellowish-green markings between the rhinophores.
Rie Nakano sent 2 pictures to the Sea-Slug Forum showing the differences, she wrote:
"Juvenile R. luteolineata is just like R. gracilis, but the color of the gills is obviously different."
This species was posted on 27 July 2003 at these websites as Roboastra luteolineata (Baba, 1936) [Nembrotha],
Willan & Chang (2017) moved it into into the new genus Tyrannodoris  Willan & Chang, 2017, and made it to the type species.
Reference:
Willan R.C. & Chang Y.-W. [Yen-Wei]. (2017). Description of three new species of Tambja (Gastropoda, Nudibranchia, Polyceridae) from the western Pacific Ocean reveals morphological characters with taxonomic and phylogenetic significance for traditional Polyceridae and related 'phaneorobranch' nudibranchs.
Basteria. 81(1-3): 1-23.
More information on Tyrannodoris luteolineata as Roboastra luteolineata are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 5 October 2017, Tyrannodoris luteolineata (Baba, 1936)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Tyrannodoris_luteolineata.htm