Not a mosquito. Can you get a shot that shows the antennae? Where did you find it?

See if it looks like any species of robber flies in your area.

Possibly also a crane fly - these look like mosquitoes on steriods!!

Where did you catch it?

it's not a mosquito.

That beak though--it's a stabby stabby fly.

Totally creepy, needs it's own horror series ...

http://www.floridanature.org/species.asp?species=Diogmites_sp.

But totally beneficial:

http://aggie-horticulture.tamu.edu/galveston/beneficials/beneficial-27_robber_flies.htm

It was found in Saint Augustine, Florida

It is a type of robber fly, considered a beneficial insect predator, but do not handle.