Bug Identifier
Robber fly (likely a bearded robber fly)
Community identification

Robber fly (likely a bearded robber fly)

Asilidae, likely *Efferia* or a related genus

Order & Family
Diptera; family Asilidae
Size
Typically 15–35 mm (0.6–1.4 in), depending on species.
See this bug in the Encyclopedia

Natural Habitat

Open, sunny habitats such as roadsides, grasslands, woodland edges, and scrub. Adults often perch on bare ground, rocks, or vegetation.

Diet & Feeding

Adults are aerial predators that seize flies, bees, wasps, beetles, and other insects in flight, then inject saliva that immobilizes and digests prey.

Behavior Patterns

Fast, agile hunters that repeatedly launch from exposed perches and return after capturing prey. Larvae develop in soil or decaying wood and prey on other insect larvae.

Risks & Benefits

Generally harmless to people, though handling can result in a painful defensive bite. They are beneficial natural predators that help regulate insect populations.