Landgarten von Jutta und Michael Bongers am Niederrhein

Tachina fera

This week I discovered large numbers of this insect on the Aster ‘Coombe Fishacre’.

Via Google, I mistook it for a hornet hover fly, but wasn’t sure.

I found out from Instagramfriends and through a guest at the Open Garden Gate that it is fly, named Tachina fera