Renter: Existing cavities. Uses cavities in the soil, and occasionally in dead wood. The brood cells are constructed of leaf mastic.
Below stones, in rock crevices, in grass tussocks, between dried leaves or in old cells of other bees; one nest consisting of 6 loosely attached cells was found in the angle of the lowest crotch of a 0.8cm tall pine tree. Nesting material: The brood cells, which are built singly or in small groups of up to 12, entirely consist of leaves or leaf fragments (e.g. Helianthemum, Potentilla, Hieracium, Sarothamnus, Fragaria, Cytisus, grasses) imbricately glued together, forming a cone-like structure. The cell closure is made of leaf pulp (occasionally reinforced by sand grains) and leave fragments. (Banaszak and Romasenko, 2001; Benoist, 1931; Bonelli, 1967d; Koller and Hamann, 1950; Maneval, 1925; Marikovskaya, 1995; Müller et al., 1997; Westrich, 1989).