macro of a black and yellow stellis cuckoo bee pollinating a calendula flower.

louisae bee calendula cleptoparasitic close connecting nature cuckooo drinking nectar eating entomology flying insect foraging kleptoparasitic macro north america orange parasite andrena bees parasitic pollen pollination red abdomen slender small stelis bee cuckoo louisae macro black yellow parasitic small calendula insect flower anthidiini wildflower dolichostelis pollination united states entomology america slender solitary kleptoparasitic pollen york orange wild spring insects eating foraging nature antenna nectar red hymenoptera bees megachilidae host