closeup on a colorful fluffy vestal cuckoo bumblebee, bombus vestalis, on a purple thistle flower

arthropoda arthropod bee black bombus color hymenoptera insect magnification nature psithyrus animal bumblebee cleptoparasite close closeup colorful detailed entomology fluffy hairy invertebrate macro one outdoors parasite pollinator single solitary white wild wildlife yellow purple flower thistle