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<p>Examination of gravid female specimens of nine species of <i>Culicoides</i> subg <i>Trithecoides,</i> viz <i>C. acanthostomus, C. anophelis, C. flavescens, C. paraflavescens, C. flaviscutatus</i>, <i>C. inornatithorax/flaviscutatus, C. palpifer, C. palpifer/neopalpifer,</i> and an undescribed species, revealed that none possessed the dark abdominal pigmentation characteristic of gravid and parous females of species belonging to other subgenera of <i>Culicoides</i>. The lack of abdominal pigmentation was supported by data from 68 separate collections from seven countries in southern Asia and Australasia containing more than 4100 female specimens belonging to <i>C.</i> subg <i>Trithecoides</i>, of which none had pigment. This lack of pigmentation is likely widespread within this subgenus and may also be lacking in other subgenera. The lack of abdominal pigmentation hinders the visual age grading of specimens belonging to this subgenus, which will have implications for survival studies and the selection of specimens for viral isolation and detection.&#xa0;</p> Graphical abstract <p></p>

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Absence of abdominal pigmentation in species of Culicoides Latreille subgenus Trithecoides Wirth & Hubert: An obstruction to age-grading

  • 期刊论文

  • 发表日期：

    2025年6月13日

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  • Shuddhasattwa Maitra Mazumdar,
  • Rupa Harsha,
  • Abhijit Mazumdar,
  • Jiahui Li,
  • Rong Hu,
  • Arunrat Thepparat,
  • April H. Wardhana,
  • Farah Ishtiaq,
  • Glenn A. Bellis

摘要

Examination of gravid female specimens of nine species of Culicoides subg Trithecoides, viz C. acanthostomus, C. anophelis, C. flavescens, C. paraflavescens, C. flaviscutatus, C. inornatithorax/flaviscutatus, C. palpifer, C. palpifer/neopalpifer, and an undescribed species, revealed that none possessed the dark abdominal pigmentation characteristic of gravid and parous females of species belonging to other subgenera of Culicoides. The lack of abdominal pigmentation was supported by data from 68 separate collections from seven countries in southern Asia and Australasia containing more than 4100 female specimens belonging to C. subg Trithecoides, of which none had pigment. This lack of pigmentation is likely widespread within this subgenus and may also be lacking in other subgenera. The lack of abdominal pigmentation hinders the visual age grading of specimens belonging to this subgenus, which will have implications for survival studies and the selection of specimens for viral isolation and detection. 

Graphical abstract