closeup on the forest four colored cuckoo-bumblebee, bombus sylvestris on a green leaf in the garden

arthropoda bee bombus sylvestris cuckoo bumblebee forest hymenoptera insect nature psithyrus animal biology cleptoparasite closeup entomology fourcoloured invertebrate macro male outdoors parasite pollinator single solitary wild wildlife four colored green leaf garden furry yellow black white sitting