The 30-year-old, a former England Under-21 international, will link up with the League One side until the end of the season.
Lita had scored just two goals in 19 appearances for Barnsley since joining the Tykes last summer after his spell with Premier League side Swansea came to an end.
He goes straight into Derry's squad for tonight's fixture with Colchester United.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Port Vale | 17 | 10 | 4 | 3 | 25 | 17 | 8 | 34 |
| 2 | Walsall | 16 | 9 | 4 | 3 | 30 | 17 | 13 | 31 |
| 3 | Crewe AlexandraCrewe | 16 | 8 | 5 | 3 | 20 | 14 | 6 | 29 |
| 4 | Doncaster RoversDoncaster | 17 | 8 | 5 | 4 | 22 | 18 | 4 | 29 |
| 5 | Notts County | 17 | 7 | 7 | 3 | 23 | 15 | 8 | 28 |
| 6 | MK Dons | 16 | 8 | 3 | 5 | 27 | 19 | 8 | 27 |
| 7 | AFC Wimbledon | 16 | 8 | 2 | 6 | 25 | 14 | 11 | 26 |
| 8 | Chesterfield | 17 | 6 | 7 | 4 | 30 | 20 | 10 | 25 |
| 9 | Grimsby Town | 17 | 8 | 1 | 8 | 19 | 26 | -7 | 25 |
| 10 | Bradford CityBradford | 16 | 6 | 5 | 5 | 21 | 17 | 4 | 23 |
| 11 | Gillingham | 16 | 7 | 2 | 7 | 17 | 14 | 3 | 23 |
| 12 | BarrowBarrow | 17 | 6 | 4 | 7 | 17 | 16 | 1 | 22 |
| 13 | Fleetwood TownFleetwood | 14 | 5 | 6 | 3 | 20 | 15 | 5 | 21 |
| 14 | Cheltenham TownCheltenham | 17 | 6 | 3 | 8 | 22 | 25 | -3 | 21 |
| 15 | Salford City | 16 | 5 | 6 | 5 | 15 | 18 | -3 | 21 |
| 16 | Newport CountyNewport | 17 | 6 | 3 | 8 | 19 | 26 | -7 | 21 |
| 17 | Harrogate TownHarrogate | 17 | 6 | 3 | 8 | 16 | 23 | -7 | 21 |
| 18 | Accrington StanleyAccrington | 16 | 4 | 6 | 6 | 22 | 26 | -4 | 18 |
| 19 | Bromley | 16 | 3 | 8 | 5 | 19 | 21 | -2 | 17 |
| 20 | Colchester UnitedColchester | 16 | 3 | 8 | 5 | 19 | 22 | -3 | 17 |
| 21 | Tranmere RoversTranmere | 16 | 4 | 5 | 7 | 10 | 20 | -10 | 17 |
| 22 | Swindon TownSwindon | 17 | 2 | 7 | 8 | 20 | 28 | -8 | 13 |
| 23 | Morecambe | 17 | 3 | 4 | 10 | 17 | 29 | -12 | 13 |
| 24 | Carlisle UnitedCarlisle | 17 | 3 | 4 | 10 | 14 | 29 | -15 | 13 |
| > League Two Full Table | |||||||||
