702 Agonopterix assimilella
(Treitschke, 1832)Wingspan 15-21 mm.
A common moth throughout most of the British Isles, the adults of this species fly between April and June, and are sometimes attracted to mercury vapour light.
The foodplant is broom (Cytisus scoparius), the larvae living initially inside the stems, subsequently feeding externally.
The adults are rather similar to other Agonopterix species and can be difficult to determine without dissection.