Review of the aquatic Hemiptera from Cephalonia, with a checklist for the Ionian Islands, Greece (Heteroptera: Gerromorpha, Nepomorpha, Leptopodomorpha) Author Cianferoni, Fabio text Zootaxa 2019 2019-04-01 4576 1 journal volume 27523 10.11646/zootaxa.4576.1.2 7f26c905-d546-41f4-8eeb-cd1ef9b6c11b 1175-5326 2624652 D12CE703-5871-400B-B9B5-76F13544049B Gerris (Gerris) argentatus Schummel, 1832 Material examined. Tzanata, unnamed east lake, 60 m a.s.l., 38.13299° N 20.75431° E (WGS84; uncertainty = 80 m ), 23.VII.2018 , F. Cianferoni, F. Graziani, F. Ceccolini leg., 2 ♀♀ micr., 1 ♀ macr., CFCF; Agios Nikolaos, Limni (= lake) Avithos, 290 m a.s.l. , 38.17134° N 20.71032° E ( WGS84 ; uncertainty = 10 m ), 26.VII.2018 , F. Cianferoni , F. Graziani , F. Ceccolini leg., 1 ♂ , 1 ♀ micr., CFCF . General distribution. This is a Sibero-European species (see Cianferoni & Mazza 2012 , Damgaard et al. 2014 ). Remarks. This is the first record of this species from Cephalonia.