The Iapygians where pelasgians
They spoke the Messapian language since the Messapians themselves were the southernmost tribe of the Iapyges. Their other tribes included the Dauni and the Peucetii.[4]
The name Iapyges is derived from Greek authors who linked the tribe's origin to Daedalus's son Iapyx. They were called Apuli, Salentini (or Sallentini) and Calabri by Roman authors. Iapygians were akin to the Oenotrians, an ancient Italic people who lived in the territory of Basilicata and Northern Calabria.
Information on the Daunians, brothers to Messapians,Peucetians,Oenotrians and any and all other tribes derived from these (pelasgians.)
Daunians
The ethnonym is connected to the name of the wolf, plausibly the totemic animal of this nation. The cult of the wolf was widespread in ancient Italy and was related to the Arcadian mystery cult. In fact daunos means wolf, according to ancient glosses, and is the correspondent of Greek taunos from a Indoeuropean root *dhau- to strangle, meaning literally strangler. Among the Daunians towns one may mention Lucera (Leucaria) and among other nations the ethnonym of the Lucani (Loucanoi) and of that the Hirpini, from another word meaning wolf. The outcome of the Indoeuropean voiced aspirate dh is proper of the Illyrian languages and thus different from the corresponding Latin Faunus and Oscan which is not attested.
Loucanoi is a Daunian ethnonym, and thus a Pelasgian one.
Daunus,Messapus,Peucetius and Oenotrus where probably all sons of Lycaon. The father of Lycaon is Pelasgus; father of all Pelasgians.
It would seem that Telegonus was the father of Italus; father of the before mentioned people's. Telegonus also held a certain cultural sway on the Etruscans; he was fathered by Odysseus of Ithaca and Circe. Circe came from the Caucasus (Armenia/Georgia) region.