to be honest we knew very little about this Group, for instance we believed estellina to be an eclusively "Guyanas-Lower Amazon" species...
so, the Taxonomic review of the “Probetoriformes” species group of Symmachia, published in 2020, has been a giant step forward and helped us a lot.
this study has provided us with nice species round holes, but we're left with quite a few square pegs, particularly females, that either don't fit in any hole, or fly where they're not supposed to...
that was a giant step, but there is still a long way to go.