Eh. Romulan, Vulcan - same thing. Unless you're suggesting that a migrated portion of the species evolved somethin' fierce over a scant 2000 years.

Romulans are mainly known for a blue 'ale' that is weak and pussy-like compared to Blood wine. That and they look like Vulcans and have ships that disappear.

Early Federation bases used to hang hand-painted signs outside them that said: "No Romulans Allowed!"