Scalloped Oak

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Scalloped Oak (Crocallis elinguaria) is a moth of the family Geometridae. It is a common European species. This is a distinctive species, usually with yellow forewings with a broad orange-brown band and a pointed apex. There can be considerable variation, with the central band sometimes the same colour as the rest of the forewing, ranging from pale yellow to orange-brown. Melanic forms are also known. There is always a blackish discal spot on the forewing. The hindwings are plain whitish. The wingspan is 40-46 mm. The adults fly at night in July and August and are attracted to light, sometimes in large numbers.