Asilidae, commonly known as robber flies, are predatory insects known for their aggressive behavior. They have stout, spiny legs and a characteristic beard of bristles around their face. These flies prefer sunny habitats and are proficient hunters, often capturing prey mid-air. They play a crucial role in controlling insect populations.

Asilidae, commonly known as robber flies, are widely distributed across the world, with a presence on every continent except Antarctica. They are particularly diverse in regions with warm climates, such as parts of North America, South America, Africa, and Australia. Significant populations can also be found in the Mediterranean, parts of Asia, and various islands in the Pacific and Indian Oceans.

Robber flies typically inhabit open, sunny environments where they can easily hunt prey. These habitats include grasslands, savannas, deserts, and areas with sparse vegetation. They are often found in areas that provide ample perches from which they can spot and ambush prey, such as shrubs, trees, or even man-made structures.

Asilidae are predatory insects that occupy a niche as top aerial predators among insects. They are known for their aggressive hunting behavior, capturing a wide variety of prey including other insects such as bees, beetles, and butterflies. Their role in the ecosystem is significant as they help control the populations of various pest insects.