---

Dear all,

Being mostly an ornithologist, my knowledge about dipterans is rather limited - so perhaps my question here is easy to solve for the more knowledgeable members!

The animals in the attached pictures were trapped at the end of May in calcareous dry dunes near Castricum (The Netherlands) - I would love to hear their lower taxonomic names, if that is to determined from these photos, of course.

Thanks for any efforts,

Herman.