Type notes:
Material included: Argentina: Buenos Aires, Monte Hermoso (Carette), Argentina: Rio Negro, Frias (Lehmann-Nitsche); workers, queen, deposited in MHNG, NHMB (no type status).
As unavailable (infrasubspecific) name: Gallardo, 1919b: 249.
Declared as unavailable (infrasubspecific) name: Shattuck, 1994: 97.
[Forelius grandis var. symbioticaKempf, 1972b: 109. Unavailable name (variety proposed after 1960).]