It goes without saying that it has been interesting in working with creating an Etruscan cult with very little information. I largely draw on how I would imagine Greek sources would be interpreted when arriving to Etruria from Greece. There is little doubt to my mind that the name is closely related to the Thessalian name for Apollon as Apullun as produced by Plato, but the cult of the god is highly influenced by Doric and outside influences (as per we see many similarities with Uni to both Hera and she is directly associated with Astarte).
With Apulu there are a few distinct cult features that we see. The laurel, the staff (often in form of a laurel branch), serpents and wolves. There is little focus on Apulu with the kithara which is more often shown with his twin as per Doric cult. The close connections of Apulu with the tomb also shares many Doric associations. The closeness of Apulu and Uni in inscriptions may imply a close relationship with Hera and Apollon in Crete where he is the son of that goddess (although other source material dealing with Doric Crete is that he is the son of Corybas who was transformed into a great dragon). It is probable that Apulu’s cult has a stronger Doric element than Ionian. The wolfish and draconic Apollon who rules purifying streams and keeps harbors, lord of storms and tombs, all-seeing god of ripening and decay. Protector of life and destroyer of life.
While Apulu did eventually gain more solar influences in his cult, it is these above that capture the heart of my relationship with him even when worshipping him as Apollon before when I honored him as the grandson of the celestial dragon Koios, and the wolfish god who with great winds destroys all which is before him. The Echidna-like sepent beings serve him. Yet he is a god who preserves life too and feasts upon that which would bring famine and death before its time.
So I call him my wolfish lord, I call him too first among all dragons, king of dragons.