Morphological variation in Parnassius mnemosyne (Linnaeus, 1758) was studied using 20 measurements of the wing shape, venation and coloration in males and females of eastern Fennoscandian populations. The type specimens were analysed. The results were related to the previous subspecific division proposed by Bryk. The results suggest that the type specimens (nominate ssp.) can be classified together with the populations from southwestern Finland. The populations of the Åland archipelago seem to form a distinctive group (ssp. ugrofennica Bryk), differing from both the nominate subspecies and the Swedish ssp. romani Bryk. The results on the Karelian material agree well with Bryk's classification (ssp. karjala, ssp. poppii). The only Finnish inland population at Somero differs only slightly from other SW Finnish populations. The loss of populations in Finland has not resulted in losses of taxa at a subspecific level.