New records of water beetles (Coleoptera: Helophoridae, Hydrophilidae, Hydraenidae) from Commander Islands Author Sazhnev, A. S. text Far Eastern Entomologist 2018 2018-08-06 365 26 30 http://dx.doi.org/10.25221/fee.365.2 journal article 10.25221/fee.365.2 2713-2196 7164212 CCD2A6E5-A7CD-4685-B29E-63D75D07D8E0 Ochthebius ( Ochthebius ) aff. yoshitomii Jäch et Delgado, 2014 Figs 8–10 MATERIAL EXAMINED. Russia : Kamchatka krai , Aleutsky District, Commander Islands, Bering Island, Vkhodnoy Rif cape, coast of Pacific Ocean, in the cracks of the rocks, 26. VI 2015 , 3 exs. (coll. A.S. Sazhnev); Toporkov Island , coast of Pacific Ocean , in the cracks of the rocks , 1. VII 2015 , 7 exs. (coll. A.S. Sazhnev). NOTES . Specimens from Commander Archipelago are identified by us as Ochthebius yoshitomii , which belong Ochthebius vandykei species group (Jäch & Delgado, 2014), but probably the populations from Commander Islands belong to a new undescribed species. All specimens of O. yoshitomii were collected in littoral zone in the cracks of the rocks ( Figs 8– 10) together with endemic to Commander Archipelago Aegialites beringensis Zerche, 2004 (Salpingidae) (Sazhnev, 2015). DISTRIBUTION. Russia (Kuril Islands: Kunashir Island, Paramushir Island; Commander Islands: Bering Island, Toporkov Island); Japan ( Hokkaido Island, northern part of Honshu Island) (Jäch & Delgado, 2014; Prokin et al ., 2015).