How does a pseudoscorpion differ from a true scorpion?

Pseudo scorpions and true scorpions belong to different orders within the class Arachnida and share certain similarities but also have notable differences:

1. Body Structure: Pseudo scorpions are generally much smaller than true scorpions, usually measuring only a few millimeters in size, while true scorpions are typically larger, ranging from a few centimeters to several inches in length. Pseudo scorpions lack the elongated tail with a stinger found in true scorpions.
2. Tail and Stinger: True scorpions possess an elongated tail that ends with a venomous stinger, a defining feature that pseudo scorpions lack. Pseudo scorpions have a rounded abdomen without an extended tail.
3. Chelae (Pincer-like Appendages): Both pseudo scorpions and true scorpions have claw-like appendages near their mouths known as chelae. In true scorpions, these chelae are much larger and more prominent, whereas in pseudo scorpions, they are smaller and less noticeable.
4. Venom: True scorpions use venom to subdue prey or for defense, delivered via their stingers. Pseudo scorpions do not possess venomous stingers.
5. Habitat: Pseudo scorpions are often found in diverse habitats, including leaf litter, soil, under bark, and in homes, where they feed on small arthropods. True scorpions inhabit a wide range of environments, including deserts, forests, and grasslands, and are more widely known for their presence in arid regions.
6. Reproduction: Pseudo scorpions reproduce via internal fertilization, and females carry eggs in a specialized structure called a "pseudo scorpion pouch" until the young hatch. True scorpions also reproduce internally, with the female giving birth to live young rather than laying eggs.

In summary, while both pseudo scorpions and true scorpions are arachnids and share certain structural features, the most significant differences lie in their body structure, tail morphology, venomous capabilities, and reproductive methods.