Enarmonia formosana, the cherrybark tortrix or cherry-bark moth, is a small but colorful moth species of the family Tortricidae. It is native to all of northern and western Europe, ranging south to the Maghreb. North of the Alps its range extends eastwards to Siberia and Kazakhstan. Possibly and most likely introduced populations are found in Asia Minor and North America, respectively. It is the type species of its genus (Enarmonia), and by extension of the tribe Enarmoniini of subfamily Olethreutinae.