closeup on the forest four colored cuckoo-bumblebee, bombus sylvestris on a pink wallflower in the garden

arthropoda arthropod bee bombus common european hymenoptera insect nature animal wildlife apidae biology bumblebee closeup detail entomology garden hairy invertebrate macro outdoor pollinator single social solitary summer wild wing colorful worked sitting flowers purple sylvestris erysimum cheiri cleptoparasite kleptoparasite cuckoo forest fourcoloured four colored cuckoo-bumblebee pink wallflower natural walflower