419 Argyresthia semifusca
(Haworth, 1828)Wingspan c.12 mm.
Distributed across most of the British Isles, the adults of this species often show a slight purplish tinge to the brown colour of the forewing.
The larvae feed either on hawthorn (Crataegus) or rowan (Sorbus aucuparia), in a young shoot during early summer.
Adult moths fly from June into late August/early September.