Oviposition and Damage Sites of Kiwifruit by <i>Nokona feralis</i>(Lepidoptera: Sesiidae), the Seasonal Prevalence of the Adults, and Its Control by Insecticides

  • Kubota Seiichi
    Ehime Research Institute of Agriculture, Forestry and Fisheries
  • Kanazaki Shuji
    Ehime Fruit Tree Research Center
  • Ohaya Kazu
    Ehime Research Institute of Agriculture, Forestry and Fisheries
  • Kuroda Tsuyoshi
    Ehime Research Institute of Agriculture, Forestry and Fisheries
  • Ando Tetsu
    Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology
  • Naka Hideshi
    Laboratory of Applied Entomology, Faculty of Agriculture, Tottori University

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Other Title
  • キウイフルーツに対するキクビスカシバ(チョウ目:スカシバガ科)の産卵・加害部位と成虫の発生消長および薬剤防除法
  • キウイフルーツ ニ タイスル キクビスカシバ(チョウモク:スカシバガカ)ノ サンラン ・ カガイ ブイ ト セイチュウ ノ ハッセイ ショウチョウ オヨビ ヤクザイ ボウジョホウ

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Abstract

<p>Lepidopteran larvae damage to the branches of cultivated kiwifruit is a serious problem in the southwest part of Ehime Prefecture, Japan. We reared these larvae using seedlings of kiwifruit, and found that this species was a clearwing moth, Nokona feralis(Leech). After emergence, the 1st instar larvae bored into the current shoots from the base of the petiole, and almost all of the leaves near the positions where the larvae bored were withered. Larvae moved to 30–40 mm diameter branches and bored into them, and expelled a large amount of frass from the site the larvae attacked. The puparia were observed mainly on 20–50 mm diameter branches. One to five eggs were laid, mainly on the petiole base. Ovipositions by females were observed until the middle of October. Eggs overwintered and then larvae hatched the next April. The hatching rate was 30.4% and 39.2% of eggs were attacked by a parasitoid wasp. Males were captured by pheromone traps from early September to the middle of October, and a peak of male capture was observed from late September to early October. Of 28 pheromone traps placed across Ehime Prefecture, only 4 traps in the southwest region(Ainan Town, Uwajima City, and Yawatahama City)captured males. To suppress larval attack, some insecticides were carried out in the season of larval hatch. Cypermethrin, methidathion(DMTP), and cartap effectively prevented the larval attack to kiwifruit.</p>

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