Small bee

Small bee

Observation - Small bee - UK and Ireland. Description: These small bees are nesting in drilled fence posts in our garden. I think it is Hylaeus, but is it possible to get the species ? The legs are yellow and black.

These small bees are nesting in drilled fence posts in our garden. I think it is Hylaeus, but is it possible to get the species ? The legs are yellow and black.