Field surveys conducted in Poland in Sep and Oct 2017 revealed infestations of the parasitic plant Phelipanche ramosa (L.) Pomel (Orobanchaceae), also known as branched broomrape, by larvae of the monophagous fly Phytomyza orobanchia Kalt. (Diptera: Agromyzidae). A single broomrape plant could be infested by 1 to 10 larvae of P. orobanchia, and 70 to 80% of the broomrape population was infested. This fly is one of the most effective biological control agents of broomrape. Also, a single female of an alien species of drosophilid, Chymomyza amoena (Loew) (Diptera: Drosophilidae), was observed in 1 locality in Sandomierz County, near Szewce, Poland.