409a Argyresthia trifasciata
Staudinger, 1871
Wingspan 7-10 mm.This tiny (6-8mm wingspan), but quite distinctive moth was not discovered in Britain until 1982, when one was caught in London. More recently there have been several more records, and it is thought that these are being imported with garden conifers, probably juniper (Juniperus) and Leyland cypress (Cupressocyparis leylandii), etc.
The example shown was the third record for Lancashire.
The moth flies in May and June, and the larvae feed on the coniferous trees mentioned above.