Search for: [Subject and Keywords = samotka czerwonawa] OR [Subject and Keywords = Hylaeus variegatus] OR [Subject and Keywords = Hymenoptera] OR [Title = Samotka czerwonawa Hylaeus variegatus \(Hymenoptera\: Apoidea\: Colletidae\) – zagrożony gatunek dzikiej pszczoły w Polsce] OR [Title = Hylaeus variegatus \(Hymenoptera\: Apoidea\: Colletidae\) – an endangered species of wild bee in Poland] OR [Creator = Celary, Waldemar \(1960– \)] OR [Creator = Posłowska, Joanna]