Osmia latreillei

Females of this species dig tunnels in the ground, where they create cells at the tunnel's end. These cells are stocked with pollens, and eggs are laid in each one. Once the eggs hatch, the larvae feed directly on the pollen grains for about thirty days. The bees overwinter in the stage of prepupae. In the spring, they enter the pupal stage, while the adults emerge by the end of March.^[5] The flying season typically lasts from April through July.^[6]

The bees are oligolectic, gathering pollen only from Asteraceae species.^[7] However, adults have been observed feeding on a variety of plants from different families, including Reichardia picroides (Asteraceae), Echium angustifolium (Boraginaceae), Vicia villosa (Leguminosae), Euphorbia spp. (Euphorbiaceae), Salvia verticillata (Labiatae), Rosmarinus officinalis (Labiatae) and Morina persica (Dipsacaceae).^[5]

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