In Eurasia from Portugal through southern and central Europe, Asia Minor and the Caucasus to Southeast Kazakhstan; northward to the North German Plain, Central Poland, Northern Ukraine and Voronezh; south to Sicily, Crete, Syria and Northern Iran.

[3] In Switzerland there is no evidence from the main Alpine ridge and the north side of the Alps, in the Engadin it occurred only historically, otherwise almost everywhere recent records.

[1] Since the species needs an early, mild spring, it occurs predominantly in the settlement area, where the corresponding microclimate and the usually rich supply of early-blooming herbs and trees meet their needs.

Probably the most characteristic synanthropic species in southwest Germany as it can be found even in the centers of large cities (e.g. Stuttgart, Karlsruhe, Freiburg), where it swarms around the primroses and hyacinths offered for sale.

Where the species occurs in warmer locations outside of built-up areas, it only colonizes sun-exposed loess and clay walls.

So far, the use of the pollen of the 14 plant families Aceraceae, Aquifoliaceae, Asparagaceae, Asteraceae, Berberidaceae, Brassicaceae, Fabaceae, Fagaceae, Uliaceae, Papaveraceae, Primulaceae, Ranunculaceae, Rosaceae and Salicaceae has been proven.

[4] These pollen sources have been observed:[3] Ilex aquifolium, Scilla siberica, Muscari armeniacum, Taraxacum officinale, Epimedium pinnatum, Brassica napus, Trifolium pratense, Trifolium repens, Quercus spec., Tulipa gesneriana, Corydalis cava, Corydalis solida, Corydalis lutea, Primula elatior, Ranunculus acris, Ranunculus repens, Prunus spinosa, Prunus armeniaca, Prunus cerasus, Prunus cerasifera, Pyrus communis, Malus domestica, Crataegus monogyna, Salix caprea, Salix purpurea, Acer platanoides, Acer pseudoplatanus, Acer campestre.

If plants have a high flower density in the immediate vicinity of the nesting areas, the females usually behave in a constant manner.

It nests in existing cavities of various shapes and sizes: cracks in walls, holes in plastering, drainage pipes and cracks in window frames, recesses in stones, old nests of fur bees (Anthophora plumipes, Anthophora fulvitarsis) and of Delta unguiculata.

The wasps Chrysis ignita and Chrysura simplex, Leucospis dorsigera, Melittobia acasta, Monodontomerus aeneus and Monodontomerus obscurus, the flies Anthrax anthrax and Cacoxenus indagator, the beetle Sitaris muralis as well as the mite Chaetodactylus osmiae, were known as breeding parasites.