Yridian

The Yridians were a warp capable humanoid race native to the planet Yridia, in the Alpha or Beta Quadrant. Across the quadrants, they were known as smugglers and information merchants, and were regarded as being devious and untrustworthy. (DS9 novel: Hollow Men).

Prior to the 2360s, the Yridians were believed to be extinct by the Federation. However, that was disproved when Rudolph Ransom, a Starfleet exobiologist, discovered a group of Yridians, and established first contact with them. (VOY novelization: Equinox).

In 2376, Androssi Overseer Biron enlisted the services of a Yridian trader, to obtain log entries from several Starfleet officers who served aboard the USS da Vinci. (SCE eBook: "War Stories, Part 1").