アブラムシの視覚器官に関する研究 (第2報)

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タイトル別名
  • Studies on the Visual Organs of the Aphids (Part 2)
  • アブラムシ ノ シカク キカン ニ カンスル ケンキュウ 2
  • On the Outer Structure of the Compound Eyes of Hatching Larvae
  • ふ化幼虫の複眼の外部形態について

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For the foundation of the research on the compound eyes of the aphids, the author has reported on the structure and the development of a few gall aphids and root aphids. The present paper deals also with the outer structure and composition of compound eyes in hatching larvae. The larval eyes have been studied in 18 species of aphids belonging to 15 genera. The results are summarized as follows:<br>The compound eyes are divided into three groups. The first group comprises Astegopteryx distylii, Ceratovacuna nekoashi, Dryopeia nishiyae, Tetraneura ulmi and Anoecia corni. Each species have 3 facets, the diameter of hind facet is 8∼11.6μ, dorsal facet 8∼10.8μ and that of abdominal facet is 8∼10.4μ.<br>The second group comprises Lachnus tropicalis, Chaitophorus saliapterus, Aphis pomi, Myzus persicae, Toxoptera piricola, Macrosiphum rosae ibarae, Macrosiphum sp., Aphis gossypii, Periphyllus californensis and Periphyllus sp. Ocular tubercle is consisted of 3 facets and compound eye 5∼58 facets. The diameter of facets is as follows; hind facet 12.4∼20μ, dorsal facet 10∼16μ, abdominal facet 10∼15.2μ and compound eye facet 8∼12μ.<br>The third group comprises Capitophorus hippaphaes, Eulachnus thubergii and Cinera pinea. They have no ocular tubercle but compound eye is consisted of 16∼40 facets, the diameter of those facets is 8∼12μ.

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