There are two races of elf; Phyokosalfar and Dokkialfar.
Biology
All races of elf have a monocolored carapace, large eyes and no hair. The carapace protects them from vacuum and cosmic radiation. This is important as they spend much time (up to a lifetime.) in deep space. Thanks to access to longevity treatments the upper class tend to live up to 1300 years with royalty lasting in the quintiple digits.