Arthrocnodax spec.

predator

Arthrocnodax spec., in gall of Aceria tenuis on Festuca rubra; Belgium, prov. Hainaut, Robechies, 10.vi.2018 © Stéphane Claerebout.

Bromopsis erecta, Belgium, prov. Namur, Couvin, lieu-dit “Roche Albéric”, 24.vi.2018 © Stéphane Claerebout: cecidomyiid larva with Aceria tenuis as prey

probably the beginning of a cocoon, made out of silk and the skins of sucked out mites.