Labrum characters in frontal view. 7. B. lucorum; 8. B. cryptarum 9. B. magnus. The drawings were provided by Johann Neumayer and are based on Rasmont (1984).

 
 
  Part of: Bossert S (2015) Recognition and identification of bumblebee species in the Bombus lucorum-complex (Hymenoptera, Apidae) – A review and outlook. Deutsche Entomologische Zeitschrift 62(1): 19-28. https://doi.org/10.3897/dez.62.9000