Parts of the body skin is visible in viewport and viewport(render) but invisible in actually render

2750889421

That`s pretty odd, The parts of the skin in visible in both viewport and viewport(render), but when I click render, they are disappeared, I check the surface make sure the opacity is 1.0 and `Visible in render` is also checked. That`s really strange ,can anybody give me some advice? Many thanks.
pic1 is viewport(render) and pic2 is actual render.

 

Richard Haseltine

So that is Visible In Render on in the Parameters pane with that bone selected?