Insectula!...Earth vs. the Giant Alien Mosquito!
 

"The movie is really kind of a throwback to the nuclear monster movies of the 50's and 60's, but using global warming instead. A giant mosquito-like alien travels from planet to planet searching for increased CO2 levels indicating life, much like a real mosquito is attracted to CO2. Its embryonic stage is in a lake so it’s of a different form than its adult stage. The other giant monsters in the trailer are creatures on its planet, and some of that is because I was using the trailer for funding purposes. I would imagine we will have a much different trailer when we get closer to release. Subplots involve a government agent with a vendetta against it and a mad scientist-type character who wants to help it "cleanse" the earth." says Insectula! writer & director Michael Peterson.

Source: Undead Backbrain

WTF?????!!!! Is this for real? Certainly looks like an original and weird throwback to the 50's - worth checking out!