closeup on a forest or four-coloured bombus sylvestris drinking nectar from a purple knapweed centaurea jacae flower

aaaa arthropoda arthropod asteraceae bee belgium bombus centaurea europe flora forest hymenoptera insect location magnification nature other psithyrus animal bumblebee cleptoparasite close closeup detailed entomology fourcoloured invertebrate macro natural one outdoors parasite plant pollinator single solitary wild wildlife