Two different routes to Apulia diverged at this point, one (Via Aurelia Aeclanensis) leading through the modern Ariano to Herdoniae, the other (the Via Appia of the Empire) passing the Lacus Ampsanctus and going on to Aquilonia and Venusia; while the road from Aeclanum to Abellinum (mod. Avellino) may also follow an ancient line.
In 1861, after the unification of Italy, the town was renamed Aquilonia based on a 16th-century assumption that this was the site of the Battle of Aquilonia between the Rome and the Samnites.
Because of this, in 1861, the neighbouring town of Carbonara was renamed Aquilonia.
Aquilonia and Romulea are near the frontiers of Apulia, in the southeastern portion of the Hirpinian territory.
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Towns assigned with certainty to the Hirpini include: Beneventum, Aeclanum, Abellinum, Compsa, Aquilonia, Romulea, Trivicum, Equus Tuticus, and Murgantia.
The main centres of the Hirpini were Malies or Maloenton (modern Benevento), Romulea (Bisaccia), Compsa (Conza), Aquilonia, Lacedonia and Abellinum (Avellino).
Formica aquilonia is a species of wood ant of the genus Formica which are widely distributed in Europe and Asia, occurring from Scandinavia in the north to Bulgaria and Italy in the south, and from the UK eastwards through France and Germany to Russia, while they are also found in the coastal areas of the Sea of Okhotsk in eastern Siberia.