I’m not entirely sure about this one. I think it’s a black fly (not just because it flies and is black), but I just can’t be positive. Please let me know if you happen to know specifically what this is. For the time being, lets learn about black flies.
Apparently, black flies are quite a nuisance to humans because they like to bite. The females feast on your blood, while the males mostly feed on nectar. I ran into a swarm of them partying on a bunch of irises. I think were they engaging in territorial gang warfare with the whiteflies.
I have to admit, though, that the more I look at information about black flies, the more I think this might be something else.