Tisza (Tiz-sa)

Spider's work and play with a form of communication they call Tisza. Tisza is the most complicated language on the planet of Mohn, but one wonderful thing about it. Spiders do not have many dialects as they are prone towards perfection and uniformity. The grand councils debate solemnly on any changes to the Tisza from far and wide and only the most remote cities and outposts (including moon and planet colonies) have significant variations or dialects from the approved norms.
Tisza is a form of communication through motions, eye movements, dances, leg motions and facial expressions. Spiders and some trained insects really are the only ones capable of speaking Tisza because the inflection of the movements adds to the meaning of the ‘words and you really need at least 6 legs to bring your point around correctly.
Tisza is utilized for communication with species not versed in the Old Tongue. The Old Tongue is a form of powerful telepathy that is capable of transmitting memories and ancient lore to those who can decipher it. 
The only beings capable of speaking in the old tongue are spiders, aie, residents of the Naeswole, and a strange hen named Dr. Prudence Jones.