Scorpion - features, photos and information
The scorpion is an arthropod invertebrate animal (with legs formed by several segments) that belongs to the order Scorpiones and is in the class of arachnids.
Scorpiones is the order of terrestrial arthropods that gathers about 2.000 species of scorpions with length from 10cm to 12cm, elongated body and chelicera with three artículos. They are generally discrete and nocturnal animals, hiding during the day under tree trunks and barks.
Etymology and origins
Life, food and habits
|Scorpion in the desert|
- The prossoma has segments cast into a carapace-shaped cephalic shield, it is the anterior region, where the eyes, chelicera, pedipalps ending in quelas (claws) and legs are found.
- The opisome is the elongated region of the body, subdivided in mesosome, with seven segments, and metasome, with five segments. In the first segment of the mesosoma there is a gonophora covered by a genital operculum, in the second segment there is a unique sensory appendix among the arachnids called comb. From the third to the sixth segment of the mesosome there is each a pair of foliaceous lungs. The metassoma has no appendixes. Respectively a cylindrical structure with a thorn at the end, called telson, containing two venom glands and the sting (the sting), is found at the end of the metasoma.