Euwallacea-fornicatus-complex
Guides
Euwallacea interjectus
ambrosia beetle
Euwallacea interjectus is an ambrosia beetle native to Asia that has become an invasive pest in multiple regions worldwide. The species cultivates mutualistic Fusarium fungi in galleries within tree xylem, which serve as its primary food source. Females possess specialized mycangia for transporting fungal spores. The beetle has emerged as a significant economic threat to poplar plantations in China and has been documented attacking living trees, a behavior atypical for many ambrosia beetles. In Japan, it vectors Ceratocystis ficicola, a pathogenic fungus causing fig wilt disease.