The Harch species of Secundus Ando in the Lambda sector were governed by structures known as ruling nests. In the time of the Galactic Republic, these ruling nests allied themselves with the Spiverelda, the oppressive regime controlling the Lambda sector, in opposition to the Andoan Free Colonies throughout the Andoan Wars. The Republic's intervention on behalf of the Andoan Free Colonies brought about the downfall of both Spiverelda and the ruling nests. Consequently, when the Clone Wars erupted between the Republic and the Confederacy of Independent Systems, the Harch chose to support the Confederacy.
Collapse of the Republic, a supplementary roleplaying sourcebook for the Star Wars Roleplaying game series by Fantasy Flight Games, released in 2019, included a mention of the ruling nests.