Ábrahám Levente – Farkas Sándor: Butterflies along the river Drava, 2008
Adult butterfly specimens feed on nectar, sometimes aggregating in masses on flowering plants in forest edge. The photo above shows this very situation along Drava river. Two female specimens of silver-washed fritillary (Argy unis paphia) [29] are seen on the sides of a male, feeding on the inflorescence of blackberry. The underside of the rear wings is greenish, with longitudinal markings. The caterpillars feed on violets. Although the host plant is not rare, the populations of this species show a decreasing tendency. Other species of forest edges include ringlet (Aphuntopushyperanthus) [30] ana hollyblue (Cehistriiwargiolus) [31].
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