〈短報〉
佐賀市の都市公園に植栽されたコナラ属（ブナ科）におけるハバチ類2種の大発生と九州におけるナラハバチ（新称）Fagineura quercivora（ハチ目：ハバチ科）の初確認
2018 年 21 巻 2 号 p. 142-144
詳細
2018 年 21 巻 2 号 p. 142-144
Outbreaks of two sawfly species were often observed at an urban park in Saga City, Kyushu since 2009. Their larvae severely defoliated Quercus dentata and Q. acutissima trees planted in the park from middle April to early May. One is Fagineura quercivora, which had been known only from the type locality, Ishikawa Prefecture, Honshu. This is the first record of F. quercivora from Kyushu, and Q. dentata and Q. acutissima are new host records for the sawfly. Its outbreak was observed in 2016 and 2017. This is the first report of the sawfly as a pest. The larvae of F. quercivora were also found in a secondary forest in Taku City, Saga Prefecture. Although the other sawfly was observed in 2009, 2010 and 2016 and defoliated only Q. acutissima, it has not been identified up to the present.
