Head of a female of Colletes brevigena, no. 190 (SEM): A. Latero-frontal view of head; B. Upper part of fovea facialis in dorsal view, lateral ocellus and antenna on the left; C. Detailed view of setae and microstructure of galea; D. Latero-dorsal view of proboscis. ant – antenna, ce – complex eye, cl – clypeus, fov – fovea facialis, oc – lateral ocellus, sen – sensilla, scl – supra-clypeus.