The female of the spiderwasp Agenioideus cinctellus [1,2] on the beehotel. She seemed more to be hunting than looking for a potential nesting site.
Literature
1 Nederlands Soortenregister2 NIEUWENHUIJSEN, Hans. De spinnendoders van Nederland (Hymenoptera: Pompilidae). Jeugdbondsuitgeverij, 2008.