Bee or wasp? We are interested in finding and photographing wasps which are pollinators and then finding nests of “honey wasps.”

Yes, some wasps in Mexico, Guatemala and nearby countries make honey.

What is the world is this insect?

Whatever it is, it's on the same flowers at same time of day as both bees and wasps.

Sure has big eyes.

Is this a male mosquito? Or a “mosquito fly”?

Sure is nicely posing for the photo (because it is busy harvesting nectar).