First and foremost, you have a female there. And I think it's a P. acutus. The areola doesn't look open enough to be a P. alleni. And the shell coloring and patterning doesn't look like the non-morph versions of a P. alleni, either. Additionally, the arms and blue inner arms more closely resemble what you'd see with a P. acutus (the blue inner arms are very common for that species).
I could be wrong, though. So, don't put a 100% faith in that answer lol