 In the scene where the fly with Andre Delambres head and arm is  caught in the spiders web, a small animatronic figure with a moving  head and arm was used in the spiderweb as a reference for actors  Vincent Price and Herbert Marshall. Vincent Price later remembered  that filming the scene required multiple takes, because each time he  and Herbert Marshall looked at the animatronic figure, with its  human head and insect body, they would burst out laughing.