That's super-interesting! I'd wondered about it and another morphotype that sometimes had what looked like a blood-filled abdomen in my samples. They were vacuumed from a field that excludes cattle for most of the year, though there are lots of native vertebrates like deer and rodents around, and there are cattle in the area.

Thanks for the help so far.
Very unfortunately, I don't have the specimen anymore; the building is infested with cockroaches and they recently raided my collection. I'm super-frustrated with it, especially for reasons like this. There are no tarsal bits or wings left on the pin, and the other picture I have doesn't help with those characters. The front leg, bent backwards in this picture, looks like it *could* have an empodium. I can't distinguish a crossvein. Would these characters help give evidence for the family, or for subfamily or genus?