This is the mosaic about Daedalus and Icarus. The story is very complicated, check the Zeugma site if you want to know all. Ignore the error message that may pop up.
From the Enc. Britt. about Daedalus: (Greek: “Skillfully Wrought”), mythical Greek architect and sculptor, who was said to have built, among other things, the paradigmatic Labyrinth forKing Minos of Crete. Daedalus fell out of favour with Minos and was imprisoned; he fashioned wings of wax and feathers for himself and for his son Icarus and escaped to Sicily. Icarus, however, flew too near the Sun, and his wings melted; he fell into the sea and drowned. The island on which his body was washed ashore was later named Icaria.
The putto seems to be playing with part of what is to become the Minotaur, half-man half-bull who was guarding the labyrinth.