The robber flies are an abundant and diverse family (Asilidae) known for their predatory behavior. Diversity can be attributed to their broad distribution, as most species tend to occupy a selective niche. As their common name implies, robber flies have voracious appetites and feed on a vast array of other arthropods, which may help maintain a healthy balance between insect populations in various habitats. Robber Flies eat insects within its size range. Larvae are predaceous on beetle larva in soil. They can bite when handled.