Key Facts
• August 3, 2025: Rare beetle species identified in Moriyama’s Biwako Global Citizen Forest
• Species: Red-spotted Flower Chafer, 1.5 cm long, part of the scarab beetle family
• Role: Pollinator aiding in flower fertilization, characterized by spotted patterns
• Status: Classified as a rare species in Shiga Prefecture’s Red Data Book
• Discovery: First confirmed sighting in Moriyama, verified by Biwako Museum curators
• Habitat: Forest established on former Yasu River site, reforestation began in 2001
• Conservation: Population declining rapidly, live specimen considered a critical sample
• Public Display: Specimen to be exhibited during summer vacation, then donated to Biwako Museum
Summary
A rare beetle species, the Red-spotted Flower Chafer, was discovered on August 3, 2025, in Moriyama’s Biwako Global Citizen Forest. This 1.5 cm-long pollinator, part of the scarab beetle family, is classified as a rare species in Shiga Prefecture’s Red Data Book. The beetle was identified by Biwako Museum curators after being found by park manager Hideki Zenno. The forest, established on the former Yasu River site, has undergone nearly 25 years of reforestation since 2001, creating a habitat closer to nature. The discovery highlights the forest’s ecological progress, supported by numerous volunteers and organizations. Due to its declining population and mysterious ecology, the live specimen is considered a vital conservation sample. The beetle will be displayed during summer vacation before being donated to the Biwako Museum.
