Polyphylla fullo, commonly known as the Jewel Beetle, is a fascinating species of beetle found in various regions, including the Comunidad Valenciana. This beetle is known for its distinct and attractive appearance.

• Appearance: Polyphylla fullo is characterized by its large size and striking patterns. It is typically brown with distinct white or cream-colored spots on its elytra (wing covers), which give it a unique and appealing appearance akin to jewels, hence its common name.
• Habitat: This species is often found in sandy or forested areas where it can burrow into the ground. It is commonly seen during the warmer months of the year, especially in the summer.
• Behavior: The adults are primarily nocturnal and are attracted to light sources. During the daytime, they often hide beneath foliage or within the leaf litter to avoid predators.
• Life Cycle: The life cycle of Polyphylla fullo includes a larval stage during which the larvae feed on roots and decaying plant material in the soil. This larval stage can last for several years before they pupate and emerge as adult beetles.
• Local Relevance: While it might not be as commonly observed as other beetles, it plays an important role in the ecosystem by contributing to the decomposition of organic matter and aerating the soil.

In the Comunidad Valenciana, this species is sometimes referred to as the escarabajo joya due to its beautiful appearance. While not especially rare, encounters with this beetle can be a delightful experience for those interested in local wildlife.