Coppens, Patrice

Valterova, Irena; Rasmont, Pierre; Terzo, Michael; Coppens, Patrice; Toubeau, Gerard, Reduced cephalic labial glands in the male bumblebees of the subgenus Rhodobombus Dalla Torre (Hymenoptera: Apidae: Bombus Latreille). Annales de la Societe Entomologique de France 2007, 43(4), 497 - 503.