Sarah LABRUYERE and Marilou MOTTET from the French ragweed observatory ( http://www.ambroisie-blog.org/) took their microphone and camera to meet researchers working on Ophraella communa. Here is a 5 min video (in French)  to present the case of this chrysomelid which is predatory of Ambrosia artemisiifolia.

(with the participation of Bruno Chauvel and Heinz Mueller-Schaerer).