Thick-headed Flies are grouped together in a family of flies called Conopidae, and there are hundreds of species of found around the world, including over 60 species in North America. Many resemble wasps and bees. While you might think they are named Thick-headed because they are a little denser than other flies, this is not true! They are so-named because of their rather large head with is somewhat disproportionate to the rest of the body. They feed on nectar, using their long proboscis which is a long mouth part. |