The wingspan is 12–14 mm. Adults are variable in colour, but consisting of a mixture of blackish, chestnut and white. There are two to three generations per year. The last generation adults overwinter.
The larvae feed on various Apiaceae species, including Aegopodium podagraria, Angelica archangelica litoralis, Angelica sylvestris, Anthriscus caucalis, Anthriscus cerefolium, Anthriscus sylvestris, Apium graveolens, Berula erecta, Carum carvi, Chaerophyllum hirsutum, Chaerophyllum temulum, Cicuta virosa, Conium maculatum, Daucus carota, Heracleum mantegazzianum, Heracleum sphondylium, Levisticum officinale, Oenanthe, Pastinaca sativa, Peucedanum, Pimpinella saxifraga, Seseli libanotis, Silaum, Sison amomum, Sium latifolium and Torilis. They mine the leaves of their host plant. The mine has the form of a short, sometimes widened corridor. There are mostly multiple mines in a single leaf and a single larva makes a number of mines. Older larvae live free and cause window feeding. They are often found in a group under a light spinning. Larvae can be found from May to June and again from August to September.
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