What actors and actresses appeared in La dahlia scarlatta - 1976?

It seems you're asking about the film "La dalia scarlatta," which translates to "The Scarlet Dahlia" in English.

While there are a few films with similar titles, the most prominent one is likely the 1946 American film noir "The Blue Dahlia" starring Veronica Lake and Alan Ladd.

There is no record of a film titled "La dalia scarlatta" from 1976. If you have more details about this film, such as its director or original language, I might be able to give you more accurate information.