Mushroom-shaped sensory structure on the
flagellum, particularly the
clava; sometimes called the sensilla ampullacea.
written by: Onagbola, E. O., and H. Y. Fadamiro. 2008. Scanning electron microscopy studies of antennal sensilla of Pteromalus cerealellae (Hymenoptera: Pteromalidae). 39:526-535.