Unlike, for example, Bombylius major, this species does not mimic a bee.

The eggs are flicked by the adult female toward the entrance of the nests of mason bees.

[4] A. anthrax is a fairly large fly, the body length is 10 mm.

The females may be found hovering before an insect hotel shooting eggs into the nest entrances of mason bees.

Afghanistan, Albania, Algeria, Armenia, Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Canary Islands, China, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Georgia, Hungary, Iran, Italy, Serbia, Sweden.