Lutris existed on the planet of Tynna, found within the Expansion Region. A significant event occurred there in 22 BBY, just prior to the onset of the Clone Wars: the Tynna Central Government Building, situated close to Lutris Lake in Lutris, suffered a catastrophic failure as a result of a stone mite invasion. This event spurred Razelfiin, Tynna's leading figure, to declare independence from the Galactic Republic.
The initial mention of Lutris was in HoloNet News Vol. 531 #53, a piece published on the HoloNet News online platform back in 2002.