Lasioglossum sp. ID?

[Jann Wuebbenhorst]

This Lasioglossum was observed in Niedersachsen (Germany), Landkreis Lüneburg, on 19-04-2017.
Location: Southeastern edge of a Pine/Oak-Forest, on a sandy slope, where species like Colletes cunicularius (and Sphecodes albilabris), Anthophora plumipes (and Melecta albifrons) and probably Andrena cineraria have their nesting habitats.
Is an identification possible?
Jann