Years ago I was up north by Fort McMud at the Firebag project. The bugs were HORRIBLE. I think this is probably northern Ontair-I-Owe (or, as we Albertans refer to it, Morontario) - and they get little black flies up there.
The flies up at Ft. Mace were fuggin BIG - big bejeebers that took MEAT when they bit. The customers ran around in heavy long sleeve shirts and bathed in bug dope and STILL got bit. I will always remember sitting in that company truck with the big buzzers thumping at the windows to get in. Those infernal insects are man's punishment for sins committed long ago.