a female short-fringed mining bee, andrena dorsata on a blue flo

zandbij wildlife solitary bees bee solitaire sauvage ryggsandbi pollinator plant perennial cornflower natuur nature mountain bluet montane knapweed mining macro knapweeds flower female close up bijen bienen bachelor 039 button adult abeille year2020 wimperflankzandbij size shortfringed sandbienen stages plants insect hymenoptera henk wallays gender flora date centaurea montana asteraceae andrenidae andrena dorsata arthropoda aaaa