Thank you! What else would you need to see in IDing bees? I try to get photos of wing venation, the face and a side of the body (very lucky if I get all of these!), but I'm thinking it's just too hard based only on photos?
It is not possible to identify Exoneura to species, except in one or two special cases, even with specimens in hand. There is no key and many of the names published by Tarlton Rayment are no longer believed to be valid. It would require a complete revision of the genus before anybody could confidently name specimens.