That's the problem with common names. There's more than one species of Robber Fly.
Link:
http://www.geller-grimm.de/asilidae.htm
I'm glad to hear that, otherwise the Greenie Weenies would be after SlowBoat407 for introducing a xenobiotic species and we'd have to visit him in the Big House.
Thanks. The article was misleading on that point. It should have said "this species of robber fly..."