Chamaesphecia masariformis is a moth of the Sesiidae family. It is found in south-eastern Europe, Turkey, northern Iran, the Middle East, the Caucasus, southern Russia, Uzbekistan and Tajikistan. The wingspan is 21–23 mm. Adults are on wing from May to July. The larvae feed on Verbascum species (including Verbascum lychnites, Verbascum thapsus and Verbascum nigrum), Scrophularia canina and possibly Astragalus ponticus.