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<p><i>Aromia bungii</i> (Coleoptera: Cerambycidae) is native across the south-eastern Palaearctic and Oriental regions. It is an important wood-boring pest of species of the genus <i>Prunus</i>. It is now present in Germany and Italy, and has previously been intercepted in the UK and the USA. It was first recognized in Japan in the early 2010s and is now present in almost 30% of prefectures. The larvae feed within the wood and eject their frass. Several wood-boring insect species eject frass, but they cannot be distinguished without being dug out. Recently, we developed a method to detect four wood-boring beetle species, including <i>A</i>. <i>bungii</i>, by chemical analysis of hydrocarbon components in their frass, making it possible to non-destructively detect specific wood-boring beetles. The hydrocarbon components in the frass are derived from the larval cuticle. This method can detect larval species regardless of tree species, the passage of time, or larval age. However, we used samples only from Tochigi. Introductions into different habitats can alter species characteristics, including perhaps cuticular hydrocarbons. To validate our method for frass samples from different habitats, we analyzed and compared hydrocarbon profiles in frass between the beetle’s native habitat (Korea) and two more Japanese habitats (Aichi and Saitama). We found no difference in hydrocarbon composition, although relative proportions differed slightly. Thus, our method can be used in both native and invaded areas.</p>

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Method developed to detect invasive wood-boring Aromia bungii (Coleoptera: Cerambycidae) can be used to detect it in its native habitat

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Nao Fujiwara-Tsujii,
  • Junheon Kim,
  • Hiroe Yasui

摘要

Aromia bungii (Coleoptera: Cerambycidae) is native across the south-eastern Palaearctic and Oriental regions. It is an important wood-boring pest of species of the genus Prunus. It is now present in Germany and Italy, and has previously been intercepted in the UK and the USA. It was first recognized in Japan in the early 2010s and is now present in almost 30% of prefectures. The larvae feed within the wood and eject their frass. Several wood-boring insect species eject frass, but they cannot be distinguished without being dug out. Recently, we developed a method to detect four wood-boring beetle species, including A. bungii, by chemical analysis of hydrocarbon components in their frass, making it possible to non-destructively detect specific wood-boring beetles. The hydrocarbon components in the frass are derived from the larval cuticle. This method can detect larval species regardless of tree species, the passage of time, or larval age. However, we used samples only from Tochigi. Introductions into different habitats can alter species characteristics, including perhaps cuticular hydrocarbons. To validate our method for frass samples from different habitats, we analyzed and compared hydrocarbon profiles in frass between the beetle’s native habitat (Korea) and two more Japanese habitats (Aichi and Saitama). We found no difference in hydrocarbon composition, although relative proportions differed slightly. Thus, our method can be used in both native and invaded areas.