A small diggerwasp male, Nitela borealis [1,2], looking for females on the beehotel.
The species is new to me. The small size makes these easy to mix up with other similar looking species, but I count it as a new garden species.
Literature
1 Nederlands Soortenregister2 Dollfuss, H., 1991. Bestimmungsschlüssel der Grabwespen Nord-und Zentraleuropas. Stapfia, 24, 1-247.
