The genus Thordisa Bergh, 1877 (Mollusca: Gastropoda: Heterobranchia) in the Iberian Peninsula

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Keywords:

morphology, anatomy, habitat, distribution, Thordisa, Iberian Peninsula.

Abstract

The family Discodorididae (Mollusca, Gastropoda, Nudibranchia) is one of the most numerous nudibranch families in terms of species and includes well-known genera in European waters such as Discodoris Bergh, 1877, Geitodoris Bergh, 1891, Jorunna Bergh, 1876, Peltodoris Bergh, 1880, Platydoris Bergh, 1877 and Taringa Er. Marcus, 1955. This family also includes the genus Thordisa Bergh, 1877, with about 25 species, known to live in all seas and oceans except the polar ones. Only 4 species of Thordisa have been recorded in European waters: T. filix Pruvot-Fol, 1951, T. azmanii Cervera & García-Gómez, 1989, T. pallida Bergh, 1884 and T. aurea Pruvot-Fol, 1951, however the last two are Mediterranean species that have not been collected again since their original description. Here we present new anatomical and biological information and distribution data of specimens collected in the Iberian Peninsula: Thordisa filix collected in the NE and specimens of T. azmanii collected in the NW. The validity of the other two European species is also discussed.

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Issue

Vol. 87 (1-4) : 2023

Section

Gea, Flora et Fauna

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