We seem to have a lot of horse flies around our home at the moment.
I don't think I've ever seen them so big.
Apparently it is the female of this species that bites . . . . . .
. . . . . and to say those bites are painful and vicious is an understatement.
Horse flies have mandibles shaped with serrated edges.
They use their mandibles to rip into the skin and then feed on the blood that wells up in the wound.
Apparently they love being near water so our pool is a big draw for them.
That's probably more than you wanted to know about them I'm sure.
Hopefully wherever you reside is horse fly free.