Agdistis bennetii is a moth of the Pterophoridae family. It inhabits salt marshes and has been recorded in the coastal areas of Great Britain, Denmark, Belgium, the Netherlands, France, Germany, Spain, Italy and Albania, as well as former Yugoslavia. The wingspan is 24–30 mm. Adults are greyish-brown. There are two generations per year, with adults on wing from mid-May to the beginning of July and again from mid-July to mid-September. The larvae feed on Limonium vulgare and Limonium binervosum. They feed on the undersides of the leaves.