The Bombus fervidus species complex includes two species (as genetically determined) and two species (as phenotypically determined) but the two “species” are not concordant. Both genetic species have both morphologies. It is not known to which of the two genetic species the type specimens belong, so it’s possible that both of the type specimens belong to just one of the genetic species (rendering one of the species names invalid).
Phylogeny and population genetic analyses reveals cryptic speciation in the Bombus fervidus species complex (Hymenoptera: Apidae) (plos.org)
Long story short, I think this is a good use of a species complex. But before I get into too much trouble, I’d like some advice on creating the species complex. During the process of creating the complex, are observations of the two species automatically subsumed into the complex, or will all of the observations have to be manually re-identified?