Vulgar name of the Eruca sativa, edible leaf plant also known as Caterpillar, Ruca, arugula or Roqueta. The name comes from the Italian Rùcola ("small Ruca"), which seems originated in Latin erucula ("Oruguita"), although in a site of etymologies mention some contact with Urere ("Ardor") for an alleged aphrodisiac quality of its leaves.