Hydraena lotti sp. nov., a new member of the “ Haenydra ” lineage from the Peloponnese (Greece), with additional records of Hydraena species in the region (Coleoptera, Hydraenidae) Author Bilton, David T. text Zootaxa 2013 3637 1 29 38 journal article 10.11646/zootaxa.3637.1.3 4cb7cf94-c063-40dc-9488-e1e76d440214 1175-5326 283584 BA78F913-9C29-4B80-A328-229529EB1961 Hydraena arachthi Ferro & Jäch, 2000 in the Peloponnese H. arachthi was described on the basis of a single male collected in 1991 in the Arachthos River, on the border between Arta and Ioannina districts, Ipiros province, western Greece . The species was so far only known from the holotype , and is apparently closely related to Hydraena cappadocica Jäch, 1988 . A single teneral male of H. arachthi was found in marginal gravels on 26/vi/ 2012 in the Alphios River nr. Archaea Olympia, this being the first record from the Peloponnese, and a significant range extension for this apparently rare species. Hydraena simonidea Orchymont was found with H. arachthi in the Alphios, together with numerous H. morio and H. subjuncta .