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Drepana falcataria · juodataškis lenktasparnis

EN · pebble hook-tip DE · Heller Sichelflügler, Gemeiner Sichelflügler LV · bērzu sirpjspārnis PL · wycinka sierpianka

https://en.wikipedia.org/wiki/Drepana_falcataria The larvae feed usually on Birch but sometimes on Alder.