マツツマアカシンムシのマツ新梢での産卵部位

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  • The Oviposition Site of the Egg of <i>Rhyacionia duplana simulata</i> HEINRICH on Pine Shoot
  • マツツマアカシンムシ ノ マツ シン ショウ デ ノ サンラン ブイ

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The oviposition site of the egg of Rhyacionia duplana simulata HEINRICH on each shoot of the pine tree was investigated in Fukuoka City during 1965-1967. The eggs of this species were laid on the bark of the old growth, the inner side of needles, the outer side of needles, and on needle sheaths, cones, bud scales and new needle sheaths. A greater majority of the eggs were deposited on the older growth than on the new one within a shoot. The eggs of this species were densely distributed near the point at which the old growth contacts new ones at about the middle part of the shoot. Furthermore, a greater number of eggs were laid on large shoots than on small ones.

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