It doesn't harm them, though, to make the two looks part of the same species. In fact it adds tension to Illyrians' relationships with outsiders since humans once boarded and robbed one of their peaceful vessels, stole engine components and left the Illyrian crew stranded in one of the most notorious regions of known space and subject to some horrible variations in the laws of physics. "Humans betrayed us during our very first meeting and now you want me to just take their word that you'll be treated fairly or even acquitted?"