The actor has taken on the recurring role of Andre Zeller, TV Line reports.
Andre will make his entrance when Susan (Teri Hatcher) decides to return to art school.
Andre, who is a respected but temperamental artist, becomes Susan's teacher but they do not get along.
A source explained: "He clashes with Susan when she goes back to art school."
Ferrer is currently working on the Lifetime drama The Protector and has previously had roles in shows such as Bionic Woman, Crossing Jordan and Twin Peaks.
Andrea Parker also recently signed up for a role in Desperate Housewives and will play a new love interest for Tom (Doug Savant).
Meanwhile, Charles Mesure joined the show last month as a real estate developer who catches Renee's eye.
The eighth and final season of Desperate Housewives will premiere on September 25 on ABC.
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