An annoying mosquito (Culicidae) which kept me awake nearly the whole night lead me to this question.
I have heard that mosquitoes can smell CO2 which could help them to orientate in the darkness, but how do they avoid obstacles and know where to land? I was browsing the wikipedia article but did not see an explanation for this, can somebody explain this to me?
I also wonder about the purpose of their loud, annoying sound (afaik only females produce it), which i would think as an evolutinary disadvantage, but this would be another question...