A revision of the genus Arenopontia Kunz, 1937 (Copepoda, Harpacticoida, Arenopontiidae), including the description of five new species Author Sak, Serdar Department of Biology, Faculty of Science and Literature, Balıkesir University, Balıkesir, Türkiye. Author Karaytuğ, Süphan Department of Biology, Faculty of Science, Mersin University, Mersin, Türkiye. Author Huys, Rony Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK. text Zootaxa 2024 2024-04-04 5433 1 1 50 http://dx.doi.org/10.11646/zootaxa.5433.1.1 journal article 10.11646/zootaxa.5433.1.1 1175-5326 10953646 06E5A735-A276-41D7-A9EE-B09642D953B6 Arenopontia cfr. subterranea Kunz, 1937 sensu Cottarelli & Venanzetti (1989) Cottarelli & Venanzetti (1989) recorded A. subterranea from three circumsardinian islands: Isola Budelli (Arcipelago de La Maddalena), Isola Tavolara and Isola di San Pietro. From the latter island and Isola Asinara, they also collected specimens which they classified as A. cfr. subterranea (see also Cottarelli & Forniz 1995 ). The latter temporary name denotes specimens that are very similar to A. subterranea but can be differentiated by the length of the P1 endopod and other characteristics. Although the authors announced a forthcoming description of the latter species this has never been published. Cottarelli et al. (1994) listed a number of localities with freshwater influence where A. cfr. subterranea has been recorded from: mouth of River Trigno, Molise ; mouth of Ombrone River, Tuscany ; shore of Tiberio on the littoral of Sperlonga, Latium ; and shore of S. Agostino near Gaeta, Latium . Cottarelli et al . (1998) recorded it from the mouth of the Valfragida Stream in the Viterbo province. It is not clear whether all these records refer to the same morphotype of A. cfr. subterranea .