A Banquet Beetle used in the Pankot Palace banquet scene. According to conversations with ToD property master Barry Wilkinson and David Oliver of Propmasters in 2006 it was concluded that there were about 15 of these beetles made for the film. These differ from the Bug Tunnel beetles in that they have removable backs and stiff wire legs. The tunnel beetles have no backs but do have Velcro for attaching to walls and also cast floppy legs.
A note regarding the filling in the beetle - According to exec. producer Frank Marshall:"The beetles had squashed banana in them." while director Stephen Spielberg stated that they were filled with custard. Looks as if the actor who ate it is the only one who knows for sure.
CoA: Propmasters