Robber Fly, Efferia apicalis
Rouge Park, Ontario
Robberflies are excellent hunters. Using a variety of hunting strategies, adult robber flies prey upon other flies, beetles, butterflies and moths, various bees, dragon and damselflies, ichneumon wasps, grasshoppers, and some spiders. Robber flies can also be convincing bumble bee mimics.
From Interesting Insects 2009-2014