closeup on a common european hoverfly, cheilosia albitarsis sitting in it's hostplant a yellow buttercup flower

maldegemveld biodiversity invertebrate albitarsis arthropoda entomology cheilosia hostplant buttercup arthropod syrphidae european hoverfly flanders blacklet outdoors wildlife closeup sitting natural belgium diptera biology common yellow flower europe insect nature animal single macro wild fly