In
Starflight, it is speculated that the
Uhlek Brain World controls and coordinates activities of the race.
Spoilers..
The Brain World lies in Uhlek space, outward of
Gazurtoid space. Where it is exactly, I do not know; but I believe the
Spemin can provide you with coordinates. Should you destroy the Brain World with a
black egg artifact, all Uhlek activity would cease.
Be wary of what the
Thyrnn may tell you about the Brain World. Once I destroyed the planet at the coordinates they provided. It turned out to be the
Elowan homeworld. Needless to say, the
Elowan were not very happy.