What ball-joint cup piece or configuration of pieces is shown in this render? What is the name of this particular ball-cup, or piece combination that forms the thigh component circled below?

I have been unable to identify the gray cup piece when comparing it to other parts in the LEGO Digital Designer. I have ruled out this as a third party part, as the original MOC shown here was created in the LDD as well.
The top piece shown here is the LEGO Ball Joint with Ball Socket (74261 / 98613) connected to a LEGO Brick 2 x 2 with Ball Socket and Axlehole (Wide Socket) (92013).