Vespid

Vespids are a unique race in that they live on a gas giant. vespids live in "stalagtites". These stalagtites or floating islands are basically a very thick termite mound. Some how these Floating islands are somehow able to float in the atmosphere of the planet (it's name is vespid). The vespides and Ethereals were unable to to communicate very extensively until the Ethereals ordered the earth caste to make a device that would enable the tau and vespids to full communicate with eachother.