Japanese Journal of Entomology (New Series)
Online ISSN : 2432-0269
Print ISSN : 1343-8794
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Volume 26, Issue 4
Displaying 1-28 of 28 articles from this issue
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Original Article
  • Number of molting in the dwarfish sexuals of the aphid Nipponaphis distyliicola (Hemiptera)
    Utako Kurosu, Shigeyuki Aoki
    2023 Volume 26 Issue 4 Pages 197-202
    Published: December 25, 2023
    Released on J-STAGE: December 27, 2023
    DOIhttps://doi.org/10.20848/kontyu.26.4_197
    JOURNAL FREE ACCESS
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    The aphid Nipponaphis distyliicola (Hormaphidinae, Nipponaphidini) host alternates between Distylium racemosum and evergreen oaks such as Quercus glauca or Q. myrsinifolia in Japan. The sexuparae produced on the oaks fly to D. racemosum and, on its leaves, give birth to first-instar sexuals which develop into dwarfish adults. It has been unknown how many times they molt to reach the adult stage. Through rearing them individually in slender glass vials we confirmed that the female molts four times as usual aphids do but that the male molts only twice. The adult male and female of N. distyliicola are described, and morphological differences found in the first instar between sexes are also mentioned.

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