An invasive pest Brontispa longissima (Gestro) (Coleoptera: Chrysomelidae) attacks an endemic palm in the Yaeyama Islands, Japan
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The coconut hispine beetle <i>Brontispa longissima</i> (Gestro) (Coleoptera: Chrysomelidae) is considered native to Indonesia and Papua New Guinea, and it has been established and causing serious leaf damages on <i>Cocos nucifera</i> (L.) in Asia, Australia and the Pacific Islands. Although this insect was found on only <i>C. nucifera</i> in the Yaeyama Islands, Japan in the 1980s, it was unknown whether it had established in the islands and whether it attacked the endemic palm <i>Satakentia liukiuensis</i> (Hatusima) H. E. Moore. We conducted field surveys in the Yaeyama Islands in 2007 to 2009 to determine whether <i>B. longissima</i> causes serious damages on <i>S. liukiuensis</i> in the islands. Although <i>B. longissima</i> infested leaves of the young trees in most nurseries or roadsides on Ishigaki, Iriomote and Kohama islands, no serious damage was observed on wild mature trees of the <i>S. liukiuensis</i> communities, which are protected as national natural monuments. All the developmental stages of <i>B. longissima</i> were found in November 2008 and May 2009. The present study first shows that <i>B. longissima</i> is common and attacks the endemic palm <i>S. liukiuensis</i> as a main host in the Yaeyama Islands where <i>C. nucifera</i> is very rare.
- Applied Entomology and Zoology
Applied Entomology and Zoology 45(1), 137-144, 2010
JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY