Bombus (Psithyrus) sylvestris (LEPELETIER, 1832)

As this is a parasitic species, all flower visits will be for nectar only.

Westrich (1989) lists the following as nectar sources: Taraxacum officinale, Cirsium, Carduus, Onopordum, Centaurea (Asteraceae) Kanutia arvensis and Scabiosa (Dipsacaceae).

Celary (1989) lists the following nectar sources in Poland: Primula elatior (Primulaceae); Thymus sp. (Lamiaceae); Petasites officinalis, Cirsium sp., Centaurea sp., Taraxacum officinale (Asteraceae).

In Spain, Ornosa & Ortiz-Sánchez (2004) list the following plant families as providing nectar: Rosaceae and Asteraceae.

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