Osmia (Hoplosmia) olgae (Tkalců, 1978)

Probably oligolectic on Asteraceae, as are other members of the subgenus Hoplosmia.

The only two pollen loads available (from two different localities) consisted of pollen of Asteroideae. (Müller, 2018)

Visitation records: Centaurea arenaria (Asteraceae); Melilotus albus (Fabaceae)(Tkalců 1978 cited in Müller, 2018).

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