Lasioglossum hemichalceum demonstrates behavior typical for a communal species. This means that females will occupy the same nest but care for their own brood, and they all have the capacity to reproduce. They often have colonies that are small in size, and relatively well concealed. Females of L. hemichalceum will share nectar with one another via trophallaxis. They also demonstrate remarkably cooperative behavior towards each other even though the majority of the colony members are not related. This has demonstrated that interactions between group members are not restricted to kin, and that L. hemichalceum tend to differ from solitary or eusocial species. Unlike most communal species of bees, L. hemichalceum do not occupy nests over the course of multiple generations, however they may re-use a nest at some point in their life cycle.
