Creepy insect no.4

This one is the most creepy this far. I came across it at Parc W. It looks just like a small innocent fly, like this:

It’s a black fly (sv : knott, fr : simulie). But this little “innocent” creature bites you, so quite fast my elbows looked like this:

And yes, it is blood that’s dripping. And not only does it bleed, it itches as well. It didn’t felt immediately, but during the night and the days after. It itches even more than mosquito bites. The positive things is that I appreciate mosquitos now.

The black flies were everywhere. It was mostly my elbows that were attacked, but I got some on my hands, legs, thighs and back as well. The insect repellent I had didn’t work that well, but as the genius person I am I found the perfect solution:

During the rest of the stay no one bit me. When I got home I searched about this fly on the internet. And apparently it can transfer parasites; in the worst case scenario I’ll be blind. But the symptoms doesn’t show until 2-3 years. If I got the parasite, it can be treated though. Anyone who knows more about this?