Watch VoirFilms. Erotikon is a 1920 Swedish romantic comedy film directed by Mauritz Stiller, starring Tora Teje, Karin Molander, Anders de Wahl and Lars Hanson. It is based on the 1917 play A kék róka by Ferenc Herczeg. The story revolves around an entomology professor obsessed with the sexual life of bugs, and his easygoing wife who is courted by two suitors.