Renter: Existing cavities. The species nests in existing cavities in old beetle galleries in dead wood,empty snail shells, in hollow plant stems, and in old nest burrows of various aculeates (Colletes, Megachile parietina, Anthophora, Odynerus) and in the old cocoons of Osmia mustelina. The species readily takes to artificial nest sites, such as cut bamboo stems, and wood borings. The thick cell partitions and the nest closure are made of earth, sand and clay cemented together with saliva. (Westrich, 1989).
Nesting material: Cell partitions and nest plug made of mud. The outer surface of the nest plug is often covered with wood fibers, sand, dust etc. There is a clear tendency to line the burrow walls completely or partially with mud; in the most extreme case, the nest consists of a uniform mud cylinder containig several cells. The cells are delimited both in front and in the rear by two mud partitions glued together, which might indicate remains of the habit to build entire cells. (Banaszak and Romasenko, 2001; Benoist, 1931; Bosch, Vicens and Blas, 1993; Brechtel, 1986; Friese, 1923; Grandi, 1961; Le Goff, 2004b; Malyshev, 1937; Müller et al., 1997; Popovici-Baznosanu, 1909; Westrich, 1989)