---

The red bee is a Sphecodes spec, a parasit of Lasioglossum species (dying be). Sphecodes opens nests of his hosts violently and fights with the nest owners. Afterwards, the lay an eg into the nest, and the Sphecodes larva feeds the pollen etc. of the Lasioglossum larva.

So, proabably it kills the nest owners. The Lasioglossum may be malachurum or any other social species, with special bees defending the nest entrance (probably you can see the head of such an defender in the whole).

The small light red insect is a "triangulus", a larve of a Melioidae (Coleoptera). They life as parasits on bees, the small larva uses adults bees as vehikel to be carryied into the bee nest.

So, you can see two levels of parsitism on your photos.

Regards, Christian