Polia imbrifera (Guenée, 1852)

Aplecta imbrifera Guenée, 1852, Histoire Naturelle des Insectes (Lépidoptères) 6: 76. Type locality: “ New York ”.

Taxonomic notes. This species shows some simplification of the saccular processes with the reduction of the distal bundle of bristles on the left side. It means that the genital capsule secondarily seems to be more symmetrical than in other species of the nebulosa -group. It is widely distributed in the boreal and nemoral forest belts of North America and shows some clinal variation in colouration (MCCABE 1980).