Which ancient languages are included among the Italic languages?

The Italic languages are a group of Indo-European languages that were historically spoken on the Apennine Peninsula and parts of the Po valley. While scholars sometimes categorize them differently, the group generally includes the following ancient languages:1

• Latin and Faliscan: These are often grouped together as the Latin-Faliscan languages. Latin originated in Rome, while Faliscan was spoken in the Falerii district.2
• Osco-Umbrian: This major subdivision includes Oscan, Umbrian, and various minor dialects of central Italy, such as Marsian, Marrucinian, Paelignian, Sabine, Vestinian, and Volscian. These are also closely related to the Sabellic dialects.3
• South Picene: An ancient language often associated with the Osco-Umbrian group.14
• Venetic: Often classified as an Italic language, though some scholars treat it as an independent member of the Indo-European family.1

In a narrower sense, some definitions exclude Latin from the term "Italic languages," using it to refer specifically to the Osco-Umbrian, South Picene, Faliscan, and Venetic groups.1