The subgenus Setema de Freina and Witt of the genus Manulea Wallengren (Lepidoptera: Erebidae: Arctiinae: Lithosiini) includes several Boreal and Arctic lichen-moth species: the European Manulea (Setema) cereola (Hübner), the type species of the subgenus; the Siberian M. (S.) atratula (Eversmann), M. (S.) debilis (Staudinger), and M. (S.) vakulenkoi (Tshistjakov); M. (S.) hyalinofuscatum (Tshistjakov) from Chukotka; M. (S.) nigrocollare (Tshistjakov) from the Kolyma basin; and the North American Eilema bicolor (Grote) is also transferred into this subgenus as Manulea (Setema) bicolor (Grote), new combination. A key to species is given.

Arctia olschwangi Dubatolov, formerly known only from Arctic Siberia, Russia, is recorded from northern Alaska, United States of America. Distinguishing characters between northern populations of Arctia brachyptera Troubridge and Lafontaine, Arctia caja (Linnaeus), A. olschwangi Dubatolov, and Arctia opulenta (Edwards) are discussed. Arctia brachyptera Troubridge and Lafontaine is hypothesised to be a subspecies of A. olschwangi Dubatolov but more specimens need to be examined before this taxonomic change is made.