There are some large insect genera (large number of species) that I frequently identify that are formally further subdivided not into subgenera but instead into formal species groups. They are named by a species within the group, usually the first-described species. They are as rigorously defined as the genus itself, intended to group closely related species (monophyly), and are published in peer-reviewed literature as well as our taxonomic authorities.
It’d be useful to have these species-group subdivisions for IDs instead of having tough species calls being left at the giant genus. There is no “species group” taxon in iNat.
Inside some of these formal species groups are clusters of a small number of species that are externally identical in photos and most iNat observations of them could be identified only to the cluster. Some of these clusters are monophyletic and would seem to qualify for the Complex rank; the others would seem to not deserve any special taxon here. This provides another reason for including the formal species groups but at a higher rank than Complex.
Would it be acceptable to include these species-groups and place them at the Section rank with the two-word species group name?