Arthonia epiparmelia Zhurb. (on Parmelia sulcata), A. lecideicola Zhurb. & Stepanchikova (on Lecidea erythrophaea), Feltgeniomyces lecanorae Zhurb. (on Lecanora chlarotera s. lat.) and Merismatium lobariae Zhurb. (on Lobaria pulmonaria and L. scrobiculata) are described as new to science from the northern Holarctic. Abrothallus eriodermae, Lichenochora galligena and Xenonectriella streimannii s. lat. are newly reported for Asia and Russia. Keywords: lichen parasites, taxonomy, northern Asia Pacific, Alaska, Arthonia, Feltgeniomyces, Merismatium.