A polylectic species.
Flowers visited include: Trifolium pratense (Fabaceae); Solidago virgaurea (Asteraceae).
Rasmont (1988) lists the following forage species: Rubus sp. (Rosaceae); Astragalus sp., Trifolium sp., Trifolium alpinum, Trifolium thalii, Trifolium pratense, Lotus alpinus, Anthyllis vulneraria (Fabaceae); Epilobium angustifolium (Onagraceae); Calluna vulgaris, Vaccinium myrtillus (Ericaceae); Primulaceae; Gentiana sp. (Gentianaceae); Macrotomia densiflora, Cerinthe sp. (Boraginaceae); Nepeta nepetella (Lamiaceae); Linaria repens, Rhinanthus sp (Scrophulariaceae); Carduus carlinifolius, Carduus carlinoides, Centaurea sp., Cicerbita plumieri, Taraxacum sp. (Asteraceae); Allium schoenoprasum (Liliaceae)
In Spain, Ornosa & Ortiz-Sánchez (2004) list the following plant families as providing forage: Asteraceae and Fabaceae.
Knuth (1906) citing himself and others, reports visitation to Pulsatilla alpina (Ranunculaceae) in the Austrian Tirol
Jacobi (Pers. comm.) lists Trifolium badium and Trifolium repens (Fabaceae) as pollen forage sources.