Can't create species with epithet "complex"

[jwidness]

“Species group” was already proposed as a rank distinct from complex:

@Myelaphus

Finally there is the species complex, another informal rank that is best applied to closely related species that can be difficult to separate. Species groups are broader groupings of species and are not directly equivalent to the more narrow concept of complexes. Indeed, it is possible to have species complexes within species groups.