Sambucus nigra
Adult hoverflies can be found from April to September in two generations per year, as this species is bivoltine. They visit flowers of white umbellifers, "Aegopodium podagraria", "Alliaria petiolata", "Anthriscus sylvestris", Apiaceae, "Aurinia saxatilis", "Conium maculatum", "Crataegus laevigata", "Euphorbia cyparissias", "Meum athamanticum", "Potentilla reptans", "Ranunculus repens", "Salix" spec., "Sambucus nigra", "Caltha", "Cirsium", "Galium", "Scrophularia", "Sorbus aucuparia".