A bee from the genus Nomada! These cuckoo bees sneak into other bees nests to lay their eggs. Because they don't forage for their own young they have no scopa hairs for carrying pollen.

Osmia taurus female. Characterised by the horn like projections just below the eyes.

Osmia conjuncta from our field site in St. Catharines split down the center. Male on one side female on the other.