Stictocephala alta and bisonia are apparently two different species, as is correctly reflected by the iNat-taxonomy. So no need to flag the taxon.
However, as until recently only St. alta was available to select, the large majority of observations at species level are of St. alta (500 in US, 300 in Europe) vs. only a dozen of St. bisonia.
See e.g. discussion here: https://www.inaturalist.org/observations/52696282
Here is the problem: at least in Europe all observations should be IDed as St. bisonia, and I guess that would be the case for most US observations as well. So would a taxon swap have been a better solution?
I don’t know how well the two species can be separated by photos, but as of know, a lot of effort would need to be taken to ‘correct’ for all those observations.
Any suggestions how to tackle this?