Spotted Sulphur Acontia trabealis
Wingspan 18-20 mm.
Formerly resident in the Breckland district of East Anglia, this is now an extinct species in Britain, not having been recorded since the early 1960's.
It may possible occur again as a migrant, since scattered records were occasionally encountered in the south, though none in recent times.
The larval foodplant is field bindweed (Convolvulus arvensis).