The Common Quaker (Orthosia cerasi) is a common spring moth of the Noctuidae family. It is distributed throughout Europe and is also found in Turkey, Israel, Transcaucasia and eastern Siberia.
This is a variable species, the ground colour of the forewings ranging from greyish to orangey brown, sometimes with a broad dark band. The most distinctive features are two large stigmata, each edged by a narrow pale line, with a similarly coloured subterminal line. The hindwings are drab grey or brown. The wingspan is 34-40 mm. This moth flies at night in March and April and is attracted to light and sugar.
The larva is bright green with yellow markings and feeds on various trees and shrubs including apple, buckthorn, elm, oak, pear, poplar and willow as well as various Prunus species. The species overwinters as a pupa.