Reduced cephalic labial glands in the male bumblebees of the subgenus Rhodobombus Dalla Torre (Hymenoptera: Apidae: Bombus Latreille)

TERZO, M., COPPENS, P., VALTEROVÁ, I., TOUBEAU, G., RASMONT, P. Reduced cephalic labial glands in the male bumblebees of the subgenus Rhodobombus Dalla Torre (Hymenoptera: Apidae: Bombus Latreille). Annales du Societe entomologique de France. 2007, 43(4), 497-503. ISSN 0037-9271. E-ISSN 2168-6351.