6159 What is this?? mating strange pair! Holly
These are robber flies (Diptera: Asilidae); likely in the genus Promachus – see https://tinyurl.com/yddn9x4h for an example. Robber flies are ambush predators that simply wait until a potential meal flies/wanders into striking distance. They then fly out, nab their victim, and bring it back to their perch for a leisurely meal. Ed Saugstad, retired entomologist; Sinks Grove, WV.