Invasive red-necked longhorn beetle detected in Okayama and Fukui

The invasive red-necked longhorn beetle (Anoplophora chinensis) has been confirmed for the first time in both Okayama and Fukui prefectures. This species, designated as a specified invasive species in Japan, poses a significant threat to cherry, peach, and plum trees. The larvae bore into the wood, eventually killing the trees.

In Okayama, damage was identified at Okayama Korakuen and surrounding areas, affecting four cherry trees. Local authorities, including the national and prefectural governments, have initiated an investigation of schools and parks within a 2km radius of the site, to be completed by late August. Officials expressed concern regarding potential damage to the region's peach orchards and famous cherry blossom sites.

In Fukui, the beetle was first detected in Oi Town. The prefecture has convened emergency meetings to discuss prevention and response strategies. Since its initial discovery in Japan in 2012, the beetle's distribution has expanded to 22 prefectures. The Ministry of the Environment emphasizes that early eradication is critical to preventing further spread.