Diptera: Cecidomyiidae - gall midge Contarinia tragopogonis Gall on Tragopogon pratensis, Goats-beard Host: Tragopogon pratensis Causes +/- swollen and disfigured flowerheads that do not open. Jumping whitish-yellow larvae live freely among achenes before pupating in the ground. Several generations a year

Contarinia tragopogonis
Badbury Rings, Dorset. July 2018