Wingspan around 17 mm. A noticeably small species with forewing ground colour brown; some indistinct dark brown markings especially in the basal area and a row of conspicuous dots along the termen.

Green with dark green dorsal line; head capsule yellowish; prothoracic plate green with black dots; last abdominal segment green.

A very loose spinning.

The exact oviposition site is unknown but it must happen in late summer or early autumn.
First instars are unknown, later instars feed on the flowers and the seeds of Conopodium majus where they construct a silken spinning which contorts the umbel. There is always only one caterpillar per umbel but caterpillar can use more than one umbel. On the other foodplants the caterpillar makes a similar silk tube but it feeds on the leaves only. Caterpillars can be found in May–June.
The last instars constructs a loose cocoon among leaf litter on the ground or in the upper layer of the soil.
Adults are active at night; they come to light and sugar.

The caterpillar prefers the flowers and seeds of Conopodium majus; it has also been observed feeding on the leaves of: Daucus carota, Pimpinella saxifraga and very rarely on Meum athamanticum.