10 Dec, 12:23
Ireland's John Lacey will referee his first ever RBS 6 Nations match in February, while Alain Rolland is also included in the Elite Panel in what is his last season.
Comfortable at number 8, Horua is an experienced and physical back rower. The 26-year-old has won 42 Super 12/14 caps to date and made his professional debut in 2002 with the Brumbies.
The same year, Horua captained the Australian Under-21 side. He has also been capped by the Wallabies at Under-19 and 'A' level.
Described as a 'powerful forward, with clever ball skills,' he will bring a great dept to the Ulster back row for the 2009/10 season.