Synonyms and other taxonomic changes
Pheidole obscurithorax Naves, 1985
This is a South American species, from the same region (Paraná River Valley) as Red Imported Fire ants, Argentine ants, and several other imports to SE USA. Currently distributed across much of the SE US.
In its introduced range this species is associated with disturbed habitats that contain open areas of sandy soil.
First observed by E.O. Wilson in the port city of Mobile, Alabama, in the early 1950's