There is some contention as to whether or not this is
a statue of a Prothean or just a statue on a Prothean planet
. Given the recent video and concepts, I think it is safe to say that it is not actually a Prothean. My naming system comes from what the files themselves are called.
Mass Effect, Protheans (and whatever these things really are) © BioWare/EA.
You are free to use this reference however you wish. You can also download the full size version for a better quality image.
My full list of references can be found here