About Ptycholoma lecheana (Linnaeus, 1758)
Ptycholoma lecheana, commonly known as Leche's twist moth, is a moth species belonging to the family Tortricidae. This species is distributed across Europe, China (specifically Heilongjiang, Jilin, and Hunan provinces), Korea, Japan, Russia (the Amur and Ussuri regions), and Asia Minor. The wingspan of adult moths ranges from 16 to 20 mm. On the forewings, the termen is nearly straight and quite oblique, with a strong costal fold that extends from the base to the middle of the wing. The ground colour of the forewings is dark fuscous, more or less densely speckled or suffused with ferruginous-ochreous. The edges of the central fascia and the apex of the costal patch are more or less outlined by leaden-metallic lines. The hindwings are blackish-grey. Full-grown larvae are light green, with a blackish-green tone on the dorsal side; their spots are pale, and their heads are light brown. Adult moths fly from late May to early June in China, and until July in western Europe. The larvae feed on a variety of trees and shrubs, including species of Acer, Betula, Crataegus pinnatifida, Fagus, Larix leptolepis, Populus, Prunus padus, Pyrus, Quercus, Salix koreensis, Sorbus, Tilia, and Ulmus.
