Brimstone butterfly (Gonepteryx rhamni)♀︎ The only member of the whites (Pieridae) to overwinter as the imago...the insect appears in early spring and also in warm spells duing winter in some regions. The male is sulphur yellow (hence the name Brismtone) whilst the female is a pale greenish tinged white. There are two species of larval foodplant: the alder buckthorn (Rhamnus frangula) and the common buckthorn (Rhamnus carthartica). The adult often overwinters within ivy on trees and with wings folded is highly camouflaged. Podere Montecucco, Orvvieto, Umbria, Italy. April 2021