The sycamore (Acronicta aceris) is a moth of the family Noctuidae. It is distributed through most of Europe, from central England south to Morocco. To the east it is found from the Near East and Middle East to West Asia. The forewings of this species are pale to dark grey with rather indistinct markings apart from a thin black basal streak. The hindwings are white, sometimes with dark streaks at the margin. The wingspan is 40–45 mm. The adults fly at night from June to August and are attracted to light and sugar.