The Argentine Ant (1) is quite invasive "ranked among the world's 100 worst invasive animal species", and has firmly established itself in the area of Cape Town

The Argentine Ant (1) is quite invasive "ranked among the world's 100 worst invasive animal species", and has firmly established itself in the area of Cape Town, South Africa, where Antarctica-bound supply ships do leave from. However I see no record of these ants in Antarctica: "They have since spread to all continents except Antarctica" https://en.wikipedia.org/wiki/Argentine_ant https://en.wikipedia.org/wiki/Argentine_ant