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Pseudochactoidea
Buthoidea
Chaeriloidea
Chactoidea
Iuroidea
Scorpionoidea
See classification&_160;for families. The body of a scorpion is divided into two parts the cephalothorax (also called the prosoma) and the abdomen (opisthosoma). The abdomen consists of the mesosoma and the metasoma. The cephalothorax, also called the prosoma, is the scorpion's “head”, comprising the carapace, eyes, chelicerae (mouth parts), pedipalps (claws) and four pairs of walking legs. The scorpion's exoskeleton is thick and durable, providing good protection from predators. Scorpions have two eyes on the top of the head, and usually two to five pairs of eyes along the front corners of the head.[3] The mesosoma, the front half of the abdomen, is made up of six segments. The first segment contains the sexual organs as well as a pair of vestigial and modified appendages forming a structure called the genital operculum. The second segment bears a pair of featherlike sensory organs known as the pectines; the final four segments each contain a pair of book lungs. The mesosoma is armored with chitinous plates, known as tergites on the upper surface and sternites on the lower surface.
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Scorpion Subcategories
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