Or is it that the victims pest warning system is currently winning the biological arms race, in which case how are mosquitoes able to successfully reproduce? Or is it that mosquitoes have evolved such that their spawning numbers offset the difficulty they have biting?
Biology is hard.
But the question is: how would a mosquito that develops this trait have an easier time reproducing? Assuming it reproduced and had quite a few offspring, would that collective group of thousands of mosquitoes have an easier time reproducing? It wouldn’t, because humans don’t have some kind of vision that tells them the mosquito won’t make them start itching 5 minutes later or whatever, by which point the mosquito is long gone. Even if they did, they’d still smack it upon noticing it, because it carries deadly diseases and is an annoying insect.
It’s like you failed to read the first 2/3 of my reply.
The fact that many people are able to notice and whack many mosquitoes when they bite shows that it isn’t only after 5 minutes that people notice, leaving room for an evolutionary improvement that would allow them to live longer and thus reproduce more