colorful closeup on a female grey-backed mining bee, andrena vaga sitting on yellow willow pollen , salix caprea

arthropoda andrena vaga andrenidae arthropod bee hymenoptera insect nature plant salicaceae salix strepsiptera stylops ater adult animal backed biology close closeup detail endoparasite endoparasitic entomology fauna fluffy greybacked hairy macro mining natural one outdoor pollen pollination pollinator seasonal single solitary white wild wildflower wildlife wing yellow colorful female willow caprea