My pawpaws (Asimina triloba) mainly need (house) flies to pollinate. They make their flowers look like meat.
I have a couple 100 foot rows of them, it's tricky to get good pollination.
the little beetle that could, and pawpaw's are self-incompatible. -https://en.wikipedia.org/wiki/Asimina_triloba#Pollination
My grandpappy told me that if you want a good crop of pawpaws you have to hang a dead cat in the tree. I think dead cats were in greater supply back in his day.
Fascinating flowers for a tree though. Red meat color and odor only a fly could love.
For anyone that’s close, go to the upcoming Ohio Pawpaw festival! https://ohiopawpawfest.com/