Can someone tell me what they think this species might be? I just noticed these in my garden for the first time today. They're a bit larger than a honeybee, but not as large as a typical bumble bee. Also, their flight is very similar to the orchid bee in that it tends to hover like a hummingbird and then dart away rapidly. I live in Dallas, Tx if that helps in narrowing down the species. Tried to upload the image directly, but it kept failing so here's a link to my imgur page: http://imgur.com/3zsZ3