belly cover? what's it called

I would like to order the part but do not know what the Toyota technical term for it. I think its generally called a belly cover however im not sure. Under the vehicle, from the front bumper to around the front wheels there is a panel that covers the bottom of the prius. Im not sure if its the same piece, but it also goes and covers the front part of the wheel well (not the mud guard side of the wheel well but the front/bumper side of the wheel well). again, not sure if that would be two panels or one big panel.

It sometimes can get loose and scrape the road and the wheel well part will scrape the the wheel. Nothing major has happened in terms of damage to the vehicle but id like to have it replaced as the "pins" or clips have either broke or come loose.

Does anyone know what this (or these) is called and what part number it may be? As always, if there is doubt i can take photos but i dont have access to the car until Wednesday.

thanks all

 

i used this image from this thread Piece hanging from undercarriage | PriusChat
and highlighted in read the part im talking about. not sure if the wheel part is connected to the panel portion in red

 

ill try and take actual photos although its hard to get down there without raising the vehicle, which im not strong or tall enough to lift up my car.
dolj, thanks