Hosts in Great Britain & Ireland : Artemisia and Eupatorium.
Mine : A pale whitish blotch, usually upper-surface. The mine starts with a short corridor but this is usually enveloped by the blotch. No feeding lines present. The mine can resemble that of the micro-moth, Leucospilapteryx omissella. However, that mine turns purple as it ages.
Pupation : Outside of the mine.
Puparium : Reddish-brown.
Phenology : Bivoltine. Mines can be found from June until the Autumn
Notes : Buhr (1964a) states that in Germany, a high proportion of mines present on Eupatorium are lower-surface.