Identification

The egg is laid near the tip of a Broom twig and remains conspicuous throughout the mining period.  Mines are very similar to those of Leucoptera spartifoliella.  However, T. immundella generally begins by mining downwards and L. spartifoliella generally begins by mining upwards.  Spartifoliella eggs may drop off after hatching.

Recording method

Comes to light.

Life cycle

Mines: September-May.  Adults: June-September.

Larval foodplants

Broom.

History

The first for Dumfries & Galloway was found at Clatteringshaws Loch, Kirkcudbrightshire, on 6th August 1997.