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<p><i>Spodoptera litura</i> Fabricius (Lepidoptera: Noctuidae) is a major agricultural pest, primarily in Asia and Oceania. Chemical odor-based trapping is a major method used to control <i>S. litura</i>, and thus understanding the antennal sensilla of <i>S. litura</i> is critical for improving the efficacy of attractants used in pest control. In the present study, the types of <i>S. litura</i> antennal sensilla were examined by low-voltage field emission scanning electron microscopy, and morphological descriptions were provided. A total of eight types and two subtypes of the antennal sensilla were identified, namely Böhm’s bristles, sensilla trichodea, sensilla basiconica, sensilla chaetica, sensilla coeloconica, sensilla styloconica, sensilla squamiformia (I and II), and sensilla auricillica (I and II). Among them, sensilla squamiformia II, and sensilla auricillica II are reported for the first time in <i>S. litura</i>. This study provides morphological information to aid in future electrophysiological tests on the antennal sensilla of <i>S. litura</i>.</p>

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Morphological characteristics and distribution of antennal sensilla of Spodoptera litura (Lepidoptera: Noctuidae) using scanning electron microscopy

  • 期刊论文

  • 发表日期：

    2025年1月7日

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  • Yong-Ping Li,
  • Hai-Yan Zhou,
  • Hui Ye,
  • Robert A. Haack,
  • Yuan Yang,
  • Qiu-Lian Hu,
  • Ming-Min Jiang,
  • Jun Cao

摘要

Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is a major agricultural pest, primarily in Asia and Oceania. Chemical odor-based trapping is a major method used to control S. litura, and thus understanding the antennal sensilla of S. litura is critical for improving the efficacy of attractants used in pest control. In the present study, the types of S. litura antennal sensilla were examined by low-voltage field emission scanning electron microscopy, and morphological descriptions were provided. A total of eight types and two subtypes of the antennal sensilla were identified, namely Böhm’s bristles, sensilla trichodea, sensilla basiconica, sensilla chaetica, sensilla coeloconica, sensilla styloconica, sensilla squamiformia (I and II), and sensilla auricillica (I and II). Among them, sensilla squamiformia II, and sensilla auricillica II are reported for the first time in S. litura. This study provides morphological information to aid in future electrophysiological tests on the antennal sensilla of S. litura.