FIGURES 24–33 in Palaearctic Osmia bees of the subgenera Hemiosmia, Tergosmia and Erythrosmia (Megachilidae, Osmiini): biology, taxonomy and key to species

FIGURES 24–33: Osmia (Erythrosmia). 24: Female of O. andrenoides on Stachys recta (Lamiaceae; photo A. Krebs). 25: Face of female of O. andrenoides with specialized pollen-collecting bristles on clypeus and frons. 26: Pollen-collecting bristles on female clypeus of O. andrenoides in side view. 27: Nesting site of O. andrenoides in cavity under rock prominence. 28: Nest of O. andrenoides in shell of Zebrina detrita sealed with wall of leaf pulp. 29: X-rayed nest of O. andrenoides with entrance barrier of densely packed small particles. 30–33: Male terga 6–7 of O. andrenoides (30), O. erythrogastra (31), O. relicta (32) and O. sparsipuncta (33).