Osmia uncinata. 1) Female on Lotus corniculatus (Fabaceae). 2) Female on Rubus spec. (Rosaceae; photo A. Jacobs). 3) Male. 4) Female at the entrance of her nest.

 
 
  Part of: Müller A, Prosi R, Taylor S, Richter H, Herrmann M, Weibel U (2020) Unique nesting biology of Osmia ( Melanosmia) uncinata, a Palaearctic osmiine bee specialized on thick-barked conifers (Hymenoptera, Megachilidae). Alpine Entomology 4: 157-171. https://doi.org/10.3897/alpento.4.53489