I have this form as well, and it does look rather different from my other guerreronis plants. It's not far away in term sof appearnce, but rather longer straighter and more ordered cenral spines, whereas guerreronis has central spines which are often somewhat unruly.
I used to have ML031, as igualensis v palmillensis, but lost it some years ago. If anyone has a photo of this could they post it here please?
_________________
Chris43, moderator