Abstract
To date, 179 species belonging to the gastropod infraclass Euthyneura are known from Mauritius. We report for the first time from Mauritius the chromodorid nudibranch, Hypselodoris infucata (Rüppell & Leuckart, 1830), based on 47 sites surveyed over 17 months. This species was previously known from the eastern Mediterranean Sea, Indo-Pacific Ocean, and Western Indian Ocean. We observed it in Mauritius at Bain des Dames near a shipwreck under coral rubble. Considering the small size and camouflage behavior of some nudibranch species, additional fieldwork will likely add others species unknown from the islands.
Highlights
The Republic of Mauritius, situated in the south-western Indian Ocean, consists of a set of islands: the main islands of Mauritius and Rodrigues and the outer islands of Agalega and St
We report for the first time from Mauritius the chromodorid nudibranch, Hypselodoris infucata (Rüppell & Leuckart, 1830), based on 47 sites surveyed over 17 months
We identified our specimen of H. infucata using a field guide (Gosliner et al 2018), two websites, taxonomic works (Rudman 1985; Yonow 1990, 1994, 2001; Johnson and Valdés 2001; Yonow 2012; Yonow and Jensen 2018; Mehrotra et al 2020), and the assistance of divers on social media
Summary
The Republic of Mauritius, situated in the south-western Indian Ocean, consists of a set of islands: the main islands of Mauritius and Rodrigues and the outer islands of Agalega and St. Brandon. Possessing a long coastline of 330 km, Mauritius offers varied diving zones and habitats (Rambert 2008). Lagoons consist of seagrass beds and coral patches. The best developed reefs are found in Rodrigues (Bhagooli and Kaullysing 2019), but the most pristine reefs are in St. Brandon (Turner and Klaus 2005)
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