Recording method

Comes to light.

Life cycle

Larvae: August-April in the stem and roots.  Adults: May-July.

Larval foodplants

Marsh Thistle, Spear Thistle.

History

The first for Dumfries & Galloway was found near Monreith, Wigtownshire, during July 1899 by K. J. Morton, while the first for Dumfriesshire was found at Black Loch, near Ae, on 2nd July 1943 by Sir Arthur Duncan, with the Kirkcudbrightshire first being found at Troston on 7th June 1979, also by Duncan, with all three specimens at National Museums Scotland.