| Brian Fisher set the subgenus of Crematogaster quadriruga to Crematogaster (Orthocrema) | History uuid | over 4 years ago Link Activities | |
| Brian Fisher edited the species Crematogaster quadriruga | History | over 8 years ago Link Activities | |
| Brian Fisher edited the species Crematogaster quadriruga | History | over 8 years ago Link Activities | |
| Brian Fisher elevated the subspecies Crematogaster biroi quadriruga to the rank of species (now Crematogaster quadriruga) | History | over 8 years ago Link Activities |