Morpho-taxonomical studies on two subspecies of Anopheles saperoi (Diptera : Culicidae) from the Ryukyu Archipelago, Japan

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  • HIGA Yukiko
    Laboratory of Medical Zoology, School of Health Science, Faculty of Medicine, University of the Ryukyus:Department of Medical Entomology, Institute of Tropical Medicine, Nagasaki University
  • TOMA Takako
    Laboratory of Medical Zoology, School of Health Science, Faculty of Medicine, University of the Ryukyus
  • MIYAGI Ichiro
    Laboratory of Medical Zoology, School of Health Science, Faculty of Medicine, University of the Ryukyus:Research Center of Comprehensive Medicine, Faculty of Medicine, University of the Ryukyus
  • MALENGANISHO Wabyahe L. M.
    Laboratory of Medical Zoology, School of Health Science, Faculty of Medicine, University of the Ryukyus:National Institute for Medical Research
  • TAKAGI Masahiro
    Department of Medical Entomology, Institute of Tropical Medicine, Nagasaki University

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  • 琉球列島産 Anopheles saperoi 二亜種の形態分類学的研究
  • Morpho-taxonomical studies on two subsp

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More than 2 thousand field-collected specimens were morphologically examined to clarify the taxonomic status of Anopheles saperoi saperoi and An. saperoi ohamai. No specific or subspecific difference was detected between the two subspecies in the larval and pupal chaetotaxy. Anopheles s. saperoi reared under low temperature and short day-length (15℃, 10h) in the larval stage had longer wings, longer subcostal pale spots and shorter apical pale spots than the ones reared under high temperature and long day-length conditions (25℃, 15h). These variations also were confirmed in both subspecies obtained in the fields at various seasons. We consider that the differences in the subcostal and apical pale spots between these two subspecies are due to seasonal variation occurring in both subspecies. Thus, An. ohamai is degraded to a mere synonym of An. saperoi.

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