A Unicorn Fly Sunbathing

A day at home today so went on a backyard safari - was amazed at how little I found.

There was just this little fly about a centimetre long, sunbathing on a flax leaf. I dont know whether  this is big enough for you to see, but it has just one long feeler growing out from the center of its forehead. Just like a unicorn. Like many it was surprisingly hairy and it was wearing a nice iridescent vest.