Arizona Bark Scorpion or Centruoides sculpturatus ventral side

Arizona Bark Scorpion or Centruoides sculpturatus . Name Centruroides, using the Greek noun κεντρον, cen-tron = “a sharp point.”
Found in our house. Nasty little guys particularly for small children and seniors because they are the most venomous scorpion in North America but usually not lethal.
The ventral side highlights the Book lungs (round areas called stigmates with slots on the bottom) where they breath and the Pectins (feather like) that are sensory organs thought to sense surfaces, vibrations and possibly chemoreceptors like pheromones'.