Petra Karg:
Two are working: Osmia adunca f + Heriades truncorum f
Petra Karg:
Halictus tumulorum f / Lotus + Megachile rotundata f
Petra Karg:
difference in size of Osmia aurulenta f / Osmia caerulescens f
Petra Karg:
difference in size of Osmia aurulenta f / Osmia caerulescens m
Petra Karg:
Anthophora quadrimaculata and Honey bee - see the differenz in size.
Petra Karg:
Andrena sp. and fly - that shows the size of Andrena
Petra Karg:
See the difference in size: Anthidium manicatum and Megachile
Petra Karg:
Chelostoma rapunculi m + Hylaeus sp. / Geranium pratense