FIGURES 29–34. Oil-collecting structures. Figs. 29, 31 and 33. Fore elaiospathes. Figs. 30, 32 and 34. Hind elaiospathes. Figs. 29 and 30. Centris cineraria Smith, 1854. Scale bars 500 in Revision of the bee subgenus Centris (Wagenknechtia) Moure, 1950 (Hymenoptera: Apidae: Centridini)

FIGURES 29–34. Oil-collecting structures. Figs. 29, 31 and 33. Fore elaiospathes. Figs. 30, 32 and 34. Hind elaiospathes. Figs. 29 and 30. Centris cineraria Smith, 1854. Scale bars 500 µm. Figs. 31 and 32. Centris moldenkei Toro & Chiappa, 1989. Scale bars 200 µm. Figs. 33 and 34. Centris vardyorum Roig-Alsina, 2000. Scale bars 500 µm.