The Eastern Bath white (Pontia edusa) and Bath white (Pontia daplidice)are very difficult to tell apart but considered as separate 'species' having well defined ranges of distributuion. Both species are fast fliers with females often searching for plants of Reseda (Mignonette) for their egg laying) in rough grasslands, often on limestone. Photographed: Podere Montecucco, Orvieto, Umbria, Italy July 2021