Non-honey bees

Some bee species look very similar to each other, so much that sometimes it is difficult to tell them apart even by professionals. It’s interesting that sometimes they look alike but differ in their biology. For example, Andrena afzeliella and Andrena ovatula, thought to be one species until recently, have distinct food preferences. The former prefers flowers of Fabaceae but likes many different species of this family, the latter’s diet is restricted to bushes belonging to this family, like gorse.