
TextFig. 28.
Three frontal sections through the brain of Vespa vulgaris. A =, ♀ queen, B = ☿ worker C = ♂ male. Tr Trachea, C.K. Central body, Pi Pars intercerebralis, F.s.a Superior anterior fascicle. Other labels see TextFig. 12. 1: 40.










