Well according to wikipedia a scorpions can have a second tail as a deformity I'm guessing it's the same here. "Two Tails
On rare occasions, scorpions can be born with two metasomata (Tails). Two-Tailed scorpions are not a species, but rather a genetic abnormality."
Mark isn't a subaculear tooth more of a modern adaptations seeing as early scorpion fossils lacked it?
No, she's fine now, as are the younger ones. After the initial confrontations they have all integrated well. She actually caused the death of my largest male emp and my male P. cavimanus. There were no wounds or stings, I think it was just the stress. Or the sight of the monster gave the old guys heart attacks:?Is she still rampaging through your tank Jason?