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Berthella cf. postrema  Burn, 1962

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The mantle of Berthella cf. postrema is translucent whitish with numerous opaque white specs, a reticulate pattern, and a single T-shaped dorsal patch. This distinctive mark is less visible in larger specimens, and many specimens are lacking it.
This species was posted on 24 January 2005 at these websites as Berthella stellata (Risso, 1826) [Pleurobranchus],
which was thought to have a world-wide geographical distribution, excluding very cold waters.
Ghanimi et al. (2020) restricted Berthella stellata to the Mediterranean Sea and the Eastern Atlantic Ocean, they suggested to use for the Western Pacific specimens of the former Berthella stellata the name Berthella cf. postrema  Burn, 1962.
Berthella postrema was described from NSW, Australia, the reason for the 'cf'.
cf. is an abbreviation from a Latin word (confer) and means 'refer to' or 'compare with', here it means it could possibly be Berthella postrema or perhaps something closely related, or at least similar in appearance.
Thanks for identification of this specimen to Terrence M. Gosliner, the specimen of the pictures # 04, # 05, and # 06 was identified
by Andrey Ryanskiy as a juvenile.
Reference:
Ghanimi, H.; Schrödl, M.; Goddard, J. H. R.; Ballesteros, M.; Gosliner, T. M.; Buske, Y.; Valdés, Á. (2020). Stargazing under the sea: molecular and morphological data reveal a constellation of species in the Berthella stellata (Risso, 1826) species complex (Mollusca, Heterobranchia, Pleurobranchidae). Marine Biodiversity. 50(1)., available online at https://doi.org/10.1007/s12526-019-01027-w
How to cite:
Köhler, E. (2021), published 12 April 2021, Berthella cf. postrema  Burn, 1962
available from https://www.Philippine-Sea-Slugs.com/Pleurobranchida/Berthella_postrema_cf.htm

 
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