Habitats of Andrena amieti sp. n., A. allosa and A. montana. 7, the lake of Oeschinen in the Bernese Alps in Switzerland, UNESCO world heritage site and type locality of A. amieti sp. n. (Picture J. Litman). 8, nesting site of A. amieti sp. n. near Disentis in the Grisons, Switzerland (Picture A. Müller). 9, habitat of A. allosa near Chandolin in the Valais, Switzerland, at a time where the females were already actively collecting pollen (Picture S. Giriens, www.swisswildbees.ch). 10, habitat of A. montana near Zermatt in the Valais, Switzerland (Picture S. Giriens, www.swisswildbees.ch).