What are the similarities and differences between mosquitoes and blackflies?

Mosquito are both annoying little insects that both bite and commonly found near water or wood area. Mosquito bites swell and itch while blackfly causes bleeding.

Mosquitos are soft and long leggs, They will bite through clothes. Black files, also known as “buffalo gnats” or “turkey gnats” can be quite annoying to people and mammals. Much like mosquitoes, both the male and female Black Fly feed on nectar. It is only the female Black Fly who bites since she requires blood for the development of her eggs. http://www.themosquitocompany.com/pyrethrum.html