New Data on Little-known Beetle Families and a Summary of the Project: Coleoptera of the Eastern Beskid Mts (Western Carpathians, Poland)

New data on the distribution of the beetles from the Eastern Beskid Mountains are given. A list of 100 species from 37 families is presented. New localities of some species rare in Poland such as Elodes johni Klausnitzer, 1980, Lyctus pubescens Panzer, 1792, Malachius scutellaris Erichson, 1840, Osphya bipunctata (Fabricius, 1775), Peltis grossa (Linnaeus, 1758), Pyrochroa serraticomis (Scopoli, 1763) and Soronia punctatissima (Illiger, 1794) are also given. Eight taxa were recorded in the Eastern Beskid Mts for the first time: Agabus congener (Thunberg, 1794), Amphotis marginata (Fabricius, 1781), Dolichosoma lineare (Rossi, 1794), Dytiscus dimidiatus Bergstrasser, 1778, Glischrochilus quadrisignatus (Say, 1835), Ips cembrae (Freer, 1836), Orthoperus nigrescens Stephens, 1829 and Stephostethus alternans (Mannerheim, 1844). A comprehensive summary of our entire research, which was conducted in the Eastern Beskid Mts between 1999 and 2017, is provided with an emphasis on species protected by Polish law or included in various lists of endangered species.