@ that article.
It's interesting, but it smells strongly as exaggeration on some parts. The enhanced colour vision is interesting enough, but the size is not really that big a deal. It can be just as simple that when two genetically similar animals are given different circumstances (ie. the other gets all the food it needs while the other lives in hunger) the one in better circumstances gets bigger, stronger and all that stuff. It might be so that on a particular year, there were particularly good conditions for mosquitoes on Athens. Though I don't know how long they have surveyed mosquito sizes.
But all in all - there are dozens of mosquito species in Finland alone, and several thousands in the world. Crossbreeds can, of course, product interesting combinations, and it definitely is a rapidly breeding species so chances in environment would be sure to reflect fast on genotypes and fenotypes of the mosquito population.
Oh, and mosquitos aren't the worst bloodsuckers there are. Black flies are a thousand times worse, when the conditions favour them. They are small enough that they push themselves everywhere. And there's more of them than mosquitoes. And they do not actually sting and suck blood - wish it were that simple, but no, they
cut of a piece of flesh and then drink blood from that open wound, and pour in some spit to keep the wound open and perform simple anesthethics... So, if you are out alone, after a while you don't notice the bites and you can end up covered with your own blood. It's not actually dangerous unless you are allergic to them, but it's bloody annoying and disgusting.
