Exuvium

Exuvium refers to the remains of an exoskeleton and related structures that are left after an arthropod has molted. This process is known as ecdysis. The term is derived from the Latin word "exuviae," which means "things stripped from a body."

Ecdysis

Ecdysis is the process by which arthropods, such as insects, arachnids, and crustaceans, shed their exoskeleton to grow. This is necessary because their exoskeletons do not grow with their bodies. The new exoskeleton is initially soft and pliable, allowing the organism to expand before it hardens.

Composition

The exuvium is primarily composed of chitin, a long-chain polymer that is a derivative of glucose. Chitin is combined with proteins to form a tough, protective outer layer. In some species, the exuvium may also contain pigments and other compounds that were part of the original exoskeleton.

Significance

Exuviae can provide valuable information for entomologists and other scientists studying arthropods. They can be used to identify species, determine the age and growth stages of individuals, and study the health and environmental conditions of the habitat.

Examples

Common examples of exuvium include the shed skins of cicadas, dragonflies, and spiders. These remains are often found attached to vegetation or other surfaces where the arthropod has molted.

Related Pages

• Arthropod
• Ecdysis
• Chitin
• Insect
• Arachnid
• Crustacean
• Entomology