Asked June 19, 2019, 7:43 AM EDT
Large black flies which look like house flies have invaded my property. I've heard they are all over otsego county. Any explanation. Can't even walk outdoors as they cling to my clothes.
Otsego County Michigan
I believe you are describing "friendly flies", Sarcophaga aldrichi (Sarcophagidae) which are parasitoids of forest tent caterpillars.