Monday, July 1, 2013


About a thousand species of Robberflies (Family Asilidae) inhabit North America (Maxson). The family has a worldwide distribution. Some, especially in the genus Lapria, mimic bumble bees (Bugguide). Looking like bees may frighten off potential predators, or make it easier for the robberfly to capture the bees. They also prey upon other arthropods, like flies, grasshoppers, beetles, moths and butterflies, and even dragonflies (Ecobirder). The robberfly bite paralyzes their prey, which is then injected with enzymes that digest the prey’s insides. The robberfly then drinks this soup by sucking it through their proboscis.

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