Biology and predation rate of the sarcophagid fly, Agria mamillata, a predator of European small ermine moths

agria behaviour biologia biologie biology comportamiento comportement depredadores enemigos naturales ennemi naturel insecta insecte nuisible natural enemies pest insects pests of plants plagas de plantas predation predators prey prunus padus ravageur des plantes suisse suiza switzerland yponomeuta