Galdefluen

Terellia tussilaginis (the Gall fly)

This species is present in most of Europe, in European Russia and in the East Palearctic ecozone.

These flies inhabit meadows, gardens and where the host plants grow.

Adults can be seen from June to August. The larvae live in the flowerheads of Arctium lappa, Arctium minus, Arctium tomentosum and Cirsium vulgare, feeding on them and causing galls to form.

Arctium lappa - Glat burre, Arctium minus - Liden burre, Arctium tomentosum - Filtet burre og Cirsium vulgare - Horsetidsel.