My homeworld was in Sector 55 and was named 55-Vaeloris. I tried to play an Evoke action using a Civilization card from my hand for the 55-Zeraphis homeworld, but the game would not allow me to take the Evoke action.
The rulebook states that you can take the Evoke action “if the player holds a Civilization card that matches a sector he controls,” but it does not specify that it has to match a specific world he controls.