Rabotevs

From Turtledove

Rabotevs are a sentient species native to Rabotev 2. The Rabotevs are biologically similar to the Race. They also share the Race's predisposition to slow cultural development, and their culture was primitive when a Conquest Fleet commanded by Pssufalu the Conqueror arrived on their world millennia ago. They were easily conquered by the Race, and the similarities between the two species led to the Rabotevs being fully integrated into the Race's Empire.

The first alien species encountered by the Race, the similarities between the two led the Race to assume their biological and cultural traits were universal. This assumption was further strengthened when the Hallessi also fit the mold, but was invalidated by the Tosevites.