Falcaria lacertinaria, the scalloped hook-tip, is a moth of the family Drepanidae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae[1] It is found in Europe and Anatolia then east to Eastern Siberia.
The wingspan is 27–35 mm. The forewings are ochreous,mixed and strigulated with dark fuscous. The veins are darker . The first and second lines are dark fuscous, nearly straight and parallel.There is a black discal dot and the wing apex is suffused with ochreous-brown. The termen is irregularly dentate. The cilia are blackish, spotted with white.The hind wings are whitish- ochreous, fuscous -sprinkled and posteriorly brownish -tinged with a faint grey postmedian line and a dark fuscous discal dot.The larva is ochreous-brown, darker marked. The dorsal line is anteriorly pale, dark-edged, posteriorly dark and interrupted. There are two blackish dorsal marks on segment 6, preceded by a pale area and pairs of tubercular prominences on 3, 4, and 12.[2] The first generation may be more silvery-grey, the second generation smaller and lighter brown.
The moth flies from April to August in two generations depending on the location.
The larvae feed on birch and alder.