Contribution To The Taxonomy And Phylogeny Of The Genus Polia Ochsenheimer, 1816 (Noctuidae, Noctuinae, Hadenini): Species Groups And Pairs In The Holarctic Subgenus Polia S. Str. Author Varga, Zoltán Author Ronkay, Gábor Author Nagy, Jenő Author Ronkay, László text Acta Zoologica Academiae Scientiarum Hungaricae 2020 2020-03-06 66 1 35 67 http://dx.doi.org/10.17109/azh.66.1.35.2020 journal article 107005 10.17109/AZH.66.1.35.2020 a3893edb-b354-47db-94fb-f54d5e87f147 2064-2474 5734753 Polia nimbosa (Guenée, 1852) Aplecta nimbosa Guenée, 1852 , Histoire Naturelle des Insectes (Lépidoptères) 6 : 77. Type locality: “Amerique Septentrionale”. Taxonomic notes.This species shows nearly the same colour variations as P. nebulosa and it was considered by HEYDEMANN (1944) as subspecies this species despite of the expressed differences in genitalia of both sexes and the reduction of the male brush organ. The most remarkable trend is in this species the rudimentation of the distal section of the left saccular process connected with the reduction of the distal bundle of bristles which also has some geographical variation. The species is widely distributed in the boreal and nemoral forest zones of North America and shows only some clinal variation with the exception of the Vancouver Island population ( P. nimbosa mysticoides Barnes & Benjamin, 1924 ; see: MCCABE 1980 ).