The Boslics are a humanoid civilization hailing from the world of Cort, known for their fork-shaped forehead ridges. Bright purple is a common hair color among Boslics.
Bowing your head is a sign of respect in the Boslic culture. (ST - The Lost Era novel: Serpents Among the Ruins)
The Boslics were warp capable as early as the 2150s. (ENT episode: "Borderland")
The Romulans conquered the Boslics in the 23rd century and occupied their homeworld Cort for ten years before the Boslics could force them out. (ST - Typhon Pact novel: Plagues of Night)
By the 2370s decade, several Boslics captained and worked on freighters, some more shady than others. Rionoj, an associate of Quark, operated a ship out of Deep Space 9 and also traveled to the Cardassia system and the Gamma Quadrant in the 2370s. (DS9 episodes: "The Homecoming", "The Abandoned", "Broken Link")
Tilikia was another Boslic who operated a ship out of Deep Space 9. While attempting to smuggle a container in 2372, he was confronted by Kurn. Tilikia fired a weapon on the Klingon. (DS9 episode: "Sons of Mogh")
A Boslic freighter detected a Borg power signature in 2377 and informed Starfleet. (SCE eBook: The Light)
In 2382, the Boslic Triumvirate of Cort held a summit between the Khitomer Accords powers and the Typhon Pact. (ST - Typhon Pact novel: Plagues of Night)