Recording method

The smallest mine on oak, usually less than 10mm long.

Life cycle

Mines: July, September-October.  Adults fly April-May, July-August.

Larval foodplants

Oak species.

History

The first for Dumfries & Galloway was of a dead pupa found at Langholm, Dumfriesshire, on 11th October 1952 by E. C. Pelham-Clinton.