We’ve seen a number of small insects visiting this member of Anthemideae and I managed to get a picture of just a fraction of the diversity. It’s an important reminder of the value of plants that flower late into the season.
I wish I could be more specific in naming the plant but it was given to me by someone who had the ID wrong. It’s great to swap plants with folks but if you’re unsure of their accuracy it’s worth potting up their gift until you can observe further identifying characteristics. This one will definitely be planted this fall.
The green one looks quite like Lucilia sericata, which is a blowfly but they do eat pollen.
I believe you’re correct. I’ve observed them shaking pollen loose from some of our plants when landing, and have had an enjoyable time watching bald faced hornets pick them off of others.