For starters, you cannot say "mosquitoes" - as others have pointed out, there are ~3500 separate mosquito species, only ~100 bite humans, and only several dozen transmit disease.
I don't see any reason to only target those that transmit diseases. Target ones that are simply annoying because they string the average person, gives everyone a clear reason to support the proposal. There are also people with allergies or who simply don't heal the stinged area very well.
Also, I don't think country-level eradication plans (even for a single species) have the slightest chance of working long-term due to persistent re-invasion risk.
If you have to continue paying a few million each year to keep the mosquito population near zero that's no problem for any industrialized country if there's public will.
Narrowness is a virtue here, and this level of biological imprecision could alienate potential allies who will take you as reckless and uninformed.
Don't worry as far as biological imprecision goes. I don't invest the kind of effort required for being precise for a LW post to explore the idea but I would certainly invest the necessary effort if I wrote an actual petition and tried to make it viral.
I also made a choice against immediately crossposting to the effective altruism board or other venues to be able to iterate based on feedback.
(A related point is that the most promising interventions for eradication (like the sterile insect technique) are species specific, so it makes sense to start with the highest-priority target. Because [complex chain of reasoning to fill in later], I think aedes albopictus is likely the best bet.)
According to the map on Wikipedia we don't have any aedes albopictus in Germany but 4 neighboring countries have them. That means that it's not a valid target for German activism. Otherwise do you disagree with that map?
I don't see any reason to only target those that transmit diseases. Target ones that are simply annoying because they string the average person, gives everyone a clear reason to support the proposal.
This is a good point - in fact, a distinction is usually drawn between "nuisance" and "disease vector" mosquito control (they can involve very different operations), and I've heard very knowledgeable people say that the only way to maintain public support for a control program is if there's a strong nuisance component. You may be right on...
According to Louie Helm eradicating a species of mosquitoes could be done for as little as a few million dollar.
I don't have a few million dollar lying around so I can't spend my own money to do it. On the other hand, I think that on average every German citizen would be quite willing to pay 1€ per year to rid Germany of mosquitoes that bite humans.
That means it's a problem of public action. The German government should spend 80 million Euro to rid Germany of Mosquitos. That's an order of magnitude higher than the numbers quoted by Louie Helm).
The same goes basically for every country or state with mosquitos.
How could we get a government to do this without spending too much money ourselves? The straight forward way is writing a petition. We could host a website and simultaneously post a petition to every relevant parliament on earth.
How do we get attention for the petition? Facebook. People don't like Mosquitos and should be willing to file an internet petition to get rid of them. I would believe this to spread virally. The idea seems interesting enough to get journalists to write articles about it.
Bonus points:
After we have eradicated human biting mosquitoes from our homelands it's quite straightforward to export the technology to Africa.
Does anyone see any issues with that plan?