A photographic reproduction of an oil portrait of Guillaume-Antoine Olivier [source: Bernard (1997: fig. 1)].

 
 
  Part of: Bousquet Y (2018) The dating of the fourth volume of Guillaume-Antoine Olivier’s “Entomologie, ou histoire naturelle des insectes”. ZooKeys 734: 137-148. https://doi.org/10.3897/zookeys.734.22901