“…At present, 40 species of the genus Ariosoma were described (Fricke et al 2023 and this study), with at least 74% (31 species) of all species of this genus being described or identified from the Indo-West Pacific, seven species distributed along the Atlantic Ocean and two from the eastern Pacific Ocean (Smith and Kanazawa 1977;Karmovskaya 1991Karmovskaya , 2004Karmovskaya , 2015Karmovskaya , 2018Shen 1998;Smith et al 2018;Roy et al 2021;Kodeeswaran et al 2021Kodeeswaran et al , 2022aKodeeswaran et al , 2022bKodeeswaran et al , 2023Fricke et al 2023) and doubtlessly there will be many undescribed species to be discovered. Very few species of the genus Ariosoma exhibit an endemic distributional range like a specific locality or around several islands, for example, Ariosoma bauchotae Karrer, 1983 collected around western Madagascar (Smith 1989;Fricke et al 2018); Ariosoma emmae Smith & Ho, 2018, known only from Taiwan (Smith et al 2018); Ariosoma hemiaspidus (Wade, 1946), described from the Gulf of California, Mexico (McCosker and Rosenblatt 2010); Ariosoma mellissii (Günther, 1870), endemic to Saint Helena, southern-central Atlantic (Smith 2016); Ariosoma multivertebratum Karmovskaya, 2004, known only from Marquesas Islands (Karmovskaya 2004;Delrieu-Trottin et al 2015); Ariosoma sereti Karmovskaya, 2004, described only from Hiva Oa Island, Marquesas Islands (Karmovskaya 2004); and Ariosoma sazonovi Karmovskaya, 2004, collected and described only from the Philippines (Karmovskaya 2004); these species were known and described only from holotypes or with very few paratypes.…”