Genista tinctoria
The larvae feed on "Genista tinctoria", "Medicago falcata", "Medicago sativa" and "Trifolium pratense". They mine the leaves of their host plant. They spin a number of leaflets together and bite a hole in the epidermis of the basal part of a leaflet and mine it out almost completely. The colour of the body varies from dull white to almost black, with a brown head.