This is the Trade Federation's Scarab Droid Starfighter. The Scarab preceded the droid fighter that the Fedeation used at Naboo. During it's time, it was the principal fighter for the Federation, used in anything from ground support to combat and defense against pirates. It was larger and more durable than its successor, but not as fast.
This is a ship I found on the Massassi Temple databse site. Many of the main pieces came from a droid fighter kit. The main challenge was getting the saucer-shaped 'shoulder' joints to work out.