closeup on an endangered female nycthemeral miner solitary bee, andrena nycthemera sitting on a yellow willow pollen

arthropoda andrena nycthemera andrenidae arthropod bee belgium dawn ecology europe hymenoptera insect nature status animal biology closeup endangered entomology invertebrate macro mining nycthemeral miner outdoors pollinator protected red list single solitary wild wildlife natural female sitting yellow willow pollen twig