Ábrahám Levente – Farkas Sándor: Butterflies along the river Drava, 2008

With dark purple wing colour and yellow wing margins, the camberwell beauty (Nymphalis antiopa) [21] can be easily distinguished from any other species. It is associated with forest-edge habitats of low-altitude mountains or moist lowlands where the various host plants of its caterpillars - willow and poplar species - grow. Their populations have gradually decreased during recent decades, due to improper forestry management practices. Willows growing in margins are treated by forestry as 'weed trees' and are usually removed in the summer peri od which negatively influences several brush-footed butterfly populations. Another Natura 2000 species is woodland brown (Lopinga uchine) |22], whose populations have become rarer throughout Europe. It is a single-generation species flying in June. Unlike most species of the browns, the adults are light-avoiding, often flying in the completely closed canopy. Its primary habitats are moist but warm lowmountain forests and lowland gallery forests.