Numerous new records of tropical non-indigenous species in the Eastern Mediterranean highlight the challenges of their recognition and identification Author Albano, Paolo G. https://orcid.org/0000-0001-9876-1024 Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria pgalbano@gmail.com Author Steger, Jan Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria Author Bakker, Piet A. J. Naturalis Biodiversity Center, Darwinweg 2, 2333, CR Leiden, The Netherlands Author Bogi, Cesare Gruppo Malacologico Livornese, c / o Museo di Storia Naturale del Mediterraneo, via Roma 234, 57127, Livorno, Italy Author Bosnjak, Marija Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria & Croatian Natural History Museum, Demetrova 1, Zagreb, Croatia Author Guy-Haim, Tamar National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel Author Huseyinoglu, Mehmet Fatih Faculty of Maritime Studies, University of Kyrenia, Karakum, Girne, Turkish Republic of Northern Cyprus Author LaFollette, Patrick I. Malacology Section, Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA 90007, USA Author Lubinevsky, Hadas National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel Author Mulas, Martina https://orcid.org/0000-0001-9228-786X National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel & The Leon H. Charney School of Marine Sciences, University of Haifa, 199 Aba Khoushy Ave., Mt. Carmel, Haifa 3498838, Israel Author Stockinger, Martina Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria Author Azzarone, Michele Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria Author Sabelli, Bruno Museo di Zoologia dell'Universita di Bologna, via Selmi 3, 40126, Bologna, Italy text ZooKeys 2021 2021-01-13 1010 1 95 http://dx.doi.org/10.3897/zookeys.1010.58759 journal article http://dx.doi.org/10.3897/zookeys.1010.58759 1313-2970-1010-1 45DF30C9AEB448AAAC32BBE77CB7191D D317557D854C577289AA424187C079D2 Eunaticina papilla (Gmelin, 1791) Figure 5 New records. Israel • 1 spcm; Ashdod; 31.8758°N , 34.6465°E ; depth 27 m; 17 May 2017; soft substrate; grab; APM DAN project (sample 8C); size: H 1.1 mm, W 1.4 mm (illustrated specimen) • 1 sh; rocky reef off Sdot Yam; 32.5111°N , 34.8702°E ; depth 28 m; 1 Nov. 2018; hard substrate; suction sampler; HELM project (sample S60_2M). Remarks. We here report the finding of a living individual of Eunaticina papilla from the Israeli Mediterranean shelf. This juvenile specimen can be assigned to E. papilla because of its overall shape, the sculpture of fine spiral cords, the large umbilicus and the morphology of the thin corneus operculum (Figure 5D ).The species has already been reported in the Mediterranean Sea from Iskenderun in eastern Turkey with a living individual ( Oeztuerk and Bitlis Bakir 2013 ). An empty shell was collected near Shiqmona, Israel, in November 2019 and reported as Eunaticina linneana ( Recluz , 1843) ( Schechter and Mienis 2020 ), a name considered a junior synonym of E. papilla by Beu et al. (2004) . Figure 5. Eunaticina papilla (Gmelin, 1791), juvenile, Ashdod, Israel, APM DAN project (sample 8C): front ( A ), side ( B ) and back ( C ) views, operculum ( D ), base ( E ) and apical view ( F ). The pink hue is due to staining with eosin solution. Scale bar: 0.5 mm.