Life cycle
Larvae: August-April in the stem and roots. Adults: May-July.
Larval foodplants
Common Knapweed.
History
The first for Dumfries & Galloway was found at Abbey Burn Foot, Kirkcudbrightshire, on 30th May 1965 by E. C. Pelham-Clinton, who also found the first for Wigtownshire at Corsemalzie House Hotel, near Mochrum, on 27th June 1998, with the Dumfriesshire first being found at an unknown site by a person unknown prior to 1993 (SNH data).