Allium ursinum
Habitat is deciduous forest and scrub, unimproved grassland and lightly grazed grassland, open areas in forest or scrub on well-drained sites. Flowers visited include white umbellifers; yellow composites, "Allium ursinum", "Caltha", "Cornus", "Crataegus", "Euphorbia", "Geranium", "Plantago", "Ranunculus", "Rhamnus catharticus", "Rubus" and "Sorbus aucuparia".