Head of a female of Colletes hederae, no. 202 (SEM): A. Latero-frontal view of head; B. Upper part of fovea facialis in dorsal view, lateral ocellus on the left; C. Detailed view of setae and microstructure of galea; D. Latero-dorsal view of proboscis. ce – complex eye, cl – clypeus, fov – fovea facialis, ga – galea, gl – glossa, mxp – maxillary palp, oc – lateral ocellus, pgl – paraglossa, scl – supra-clypeus, sen – sensilla.