What large tube-shaped pasta has ridges on its surface?

The large tube-shaped pasta with ridges on its surface is rigatoni.

Rigatoni are broad, hollow tubes associated especially with central and southern Italy. Their name comes from the Italian word rigato, meaning “ridged” or “lined.” The ridges run along the pasta, sometimes in a slight spiral, giving sauces and grated cheese more surface area to cling to.

Rigatoni are larger than penne and ziti, while their ends are cut straight across rather than diagonally. That squared-off shape is one of the easiest ways to distinguish rigatoni from penne. Ziti is generally smooth and narrower, and macaroni is usually smaller and curved, particularly in the familiar elbow form.

The shape works especially well with substantial sauces, baked pasta dishes, ragù, and preparations containing chunky vegetables or meat. Rigatoni is particularly popular in Sicily and other parts of southern Italy, where ridged pasta is valued for holding flavorful sauces. A smaller related shape is called rigatoni or rigatoncini in diminutive forms, depending on the regional naming convention.