Adult wasps feed on aphid honeydew and nectar of Anthriscus sylvestris and Heracleum sphondylium.
Anthriscus sylvestris, a herbaceous biennial or short-lived perennial plant in the family Apiaceae
They can be encountered from May through late summer feeding on small insects and on nectar and pollen of flowers from various plants (mainly Apiaceae family, as Anthriscus sylvestris, Hogweed (Heracleum sphondylium), but also on Rubus fruticosus and Crataegus monogyna.
Anthriscus | Anthriscus sylvestris | Phoenix sylvestris | Rorippa sylvestris | Malva sylvestris | Anthriscus caucalis | A leaf of ''Angelica sylvestris |
Adult flies were found from May to August visiting flowers of Aegopodium podagraria, Alliaria petiolata, Anthriscus sylvestris, Apiaceae, Aurinia saxatilis, Conium maculatum, Crataegus laevigata, Euphorbia cyparissias, Meum athamanticum, Potentilla reptans, Ranunculus repens, Salix spec.