The deviant (UCRCENT407176) and normal (NPIC:BBSL506171) labral forms of Anthophora petrophila: A deviant, 50× magnification B deviant, 200× magnification C normal, 50× magnification D normal, 200× magnification. Scale bars indicate 1000µM (A, C) or 250µm (B, D).

  Part of: Orr MC, Tripodi AD (2017) Stiff upper lip: Labrum deformity and functionality in bees (Hymenoptera, Apoidea). Journal of Hymenoptera Research 57: 89-101.