Currently there are 14 native Macro Prime lenses for Pentax K200D and 10 of these lenses are autofocus (AF) type.
K200D also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on K200D.
Since Pentax K200D has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 1 Macro Prime lenses with Weather Sealings.