Re: New universe?
How about using the name "Arachnae" ?
Consuming such huge amounts of energy, they'd drain the 'jump fields' of ships, solar radiation, radio - almost all Electromagnetic energy to maintain their metabolism. Their ships have "energy absorbers" - though we can't use that term because it's in SFB - which abosrb the energy (or perhaps just some portion) of any energy-based weapon fired at them. Perhaps we can add that energy to their attack somehow...
They use captured/conquered victims to infiltrate potential enemies, using their advanced communications technology to garner information without the victim's knowledge. The equipment 'installed' in the victim isn't undetectable, but it's transmission medium IS...
The Dukes of the (March?) don't need to be encouraged by infiltration, their own greed would force them to move once they'd detected an opening.