Euchloe penia penia
Another black-tip butterfly with a wingspan of 32-36 mm, resembles the greenish but is less yellow with different markings on the wings. The eastern lives mainly in the eastern part of the country, in dry places, scrub, and stony mountainsides. Host plants are represented by radishes (Raphanus spp.) and stocks (Matthiola spp.). This species flies March through August, the flight is slower than that of the commoner species of black-tip.
Attribution: Sharp Photography (Wikipedia Creative Commons)
Attribution: Sharp Photography (Wikipedia Creative Commons)