A very similar species to D. alpinana, the present species having a narrower dorsal blotch among other subtle differences, it is however best to refer to the structure of the genitalia for confirmation.

This species needs to be confirmed by examination of genitalia.

Various habitats, especially where the larval foodplant, Tansy, occurs.

June and July is the flight period for the adults, which can be seen in the afternoon, but generally flies after dark.

The larvae feed in the rootstocks of Tansy (Tanacetum vulgare).

Status in Britain is difficult to determine due to the difficulty of identification, but it does seem to be genuinely uncommon. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as Nationally Scarce B.

Rarely recorded in Leicestershire and Rutland.