any of about 6,750 species of predatory insects, worldwide in distribution, in the fly order, Diptera. Robber flies range in length to almost 8 cm (3 ... [1 related articles] Found on http://www.britannica.com/eb/a-z/r/55
bee killernoun swift predatory fly having a strong body like a bee with the proboscis hardened for sucking juices of other insects captured on the wing Found on https://www.encyclo.co.uk/local/20974