Drepana falcataria caterpillar · juodataškis lenktasparnis, vikšras

• pebble hook-tip
• Heller Sichelflügler, Gemeiner Sichelflügler
• juodataškis lenktasparnis, beržinis pjautuvasparnis
• bērzu sirpjspārnis
• wycinka sierpianka

https://en.wikipedia.org/wiki/Drepana_falcataria It is found in Europe, through Siberia to the eastern Palearctic. They prefer riparian forest and carr but are also found on the edge of moors and in parks and gardens. The larvae feed usually on birch (Betula), but sometimes on alder (Alnus glutinosa).