This is a mosquito. It's one of the many insects of the tundra. They can be a nuisance. Be careful of these because it is really easy to get bitten and lose blood. Which is bad. There are also things called midges. They like to hover around heated patches of air above arctic ponds. And then there's weevils. They won't hurt you, because all they eat is decaying plants. And blow flies won't hurt you either. They like to hover around decaying animals and vegitation. Springtails... They are named because of their ability to jump using a forked tail at the end of their abdomen.