About Pandemis corylana (Fabricius, 1794)
Pandemis corylana, commonly known as the chequered fruit-tree tortrix, hazel tortrix moth, filbert tortricid or barred fruit tree moth, is a moth species belonging to the family Tortricidae. This species ranges from northern and central Europe east to Siberia, Korea, and Japan. Adult moths have a wingspan of 18–24 mm. It resembles other species in the genera Pandemis and Choristoneura, but it is much paler overall, and its forewing markings are only barely darker than the surrounding wing tissue. The head and thorax are pale yellowish brown. The base color of the forewings is also pale yellowish brown, with a distinct brown mesh pattern. Like related species, this moth has noticeable basal blotches on the wings, an oblique cross-band across the middle of the forewing, and a triangular spot at the wing tip. These markings are only barely darker than the surrounding wing, but are outlined by distinct brown edges. The hindwings are light grey and relatively narrow. In western Europe, adult moths are active in flight from July to August. In Korea, adults can be found in flight from early June to the end of September. The larvae feed on the leaves of a wide variety of deciduous trees and shrubs. Recorded host genera and species include Corylus, Fraxinus, Prunus, Quercus, Rubus, Swida sanguinea, Betula, Fagus, Larix, Pinus, Rhamnus frangula, Thelycrania sanguinea, and Vaccinium. Larvae are found from May to July. Pupation takes place inside the larva’s original habitat. This species is an occasional pest of cultivated nut and fruit trees.
