...one host species or a group of closely related taxa. Several species, most of which are opportunistic, also infect humans ([https://en.wikipedia.org/wiki ...es of ants (''Kneallhazia solenopsae'', ''K. carolinensae'', ''Vairimorpha invictae'' and ''Burenella dimorpha'').

...ynes of these three species also differ slightly to greatly in sculpturing of the postpetiole and can be normally distinguished by this character. ...der than other species, but this observation was based on a limited number of specimens. Additional measurements have shown this not to be the case.

...northeast Mississippi and northwest Alabama as well as the tidewater area of Virginia. But even there, "pure" ''S. richteri'' seems rare and most popula ...rthern range of the species in southern Brazil. This is probably the point of origin for the United States population.

..., California, Australia, New Zealand, and southern China. The probability of new invasions is therefore quite high and ''S. invicta'' must be considered ...ut other governments have more recently begun research and control efforts of their own.