Chrysopa perla, known commonly as the Green Lacewing, is a species of Neuropteran belonging to the family Chrysopidae (subfamily Chrysopinae). This widespread species is present in most of Europe. The adults reach 10–12 millimetres (0.39–0.47 in) of length, with a wingspan of 25–30 millimetres (0.98–1.18 in) and are fearsome predators, primarily feeding on aphids, occasionally on flower nectar. They can be encountered from May through August in cool and shady areas, mainly in deciduous woods, woodland edges and shrubs.