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<p>As part of an opportunistic non-invasive Odonata survey, the area around streams near two villages of Kalimpong district, West Bengal in the eastern part of India, were studied. The study is a part of a long-term initiative of the authors to fill up the Wallacean gaps and identify new distributional records. The identifications of the odonates were done solely on the basis of photographic documentations and comparisons with published literatures. Of the 22 species observed in the study sites located in the vicinity of Neora Valley National Park, <i>Anisogomphus caudalis</i> and <i>Scalmogomphus bistrigatus</i>, hitherto unrecorded from the state were found. Alongside, the first photographic live habitus documentations of <i>Stylogomphus inglisi</i> and <i>Perissogomphus stevensi</i> from the state of West Bengal are also reported through this study. Two IUCN red listed species, viz., <i>Calicnemia nipalica</i> and <i>Protosticta himalaiaca</i> are also reported. Reports of such rarely observed species highlight the need for further faunistic surveys in this otherwise less surveyed India-Bhutan international border region.</p>

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Reports on rare dragonflies (Odonata: Gomphidae) with addition of Anisogomphus caudalis Fraser 1926a and Scalmogomphus bistrigatus (Hagen in Selys, 1854) to the fauna of West Bengal state, India

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Subhajit Roy,
  • Amar Kumar Nayak,
  • Aniruddha Singhamahapatra

摘要

As part of an opportunistic non-invasive Odonata survey, the area around streams near two villages of Kalimpong district, West Bengal in the eastern part of India, were studied. The study is a part of a long-term initiative of the authors to fill up the Wallacean gaps and identify new distributional records. The identifications of the odonates were done solely on the basis of photographic documentations and comparisons with published literatures. Of the 22 species observed in the study sites located in the vicinity of Neora Valley National Park, Anisogomphus caudalis and Scalmogomphus bistrigatus, hitherto unrecorded from the state were found. Alongside, the first photographic live habitus documentations of Stylogomphus inglisi and Perissogomphus stevensi from the state of West Bengal are also reported through this study. Two IUCN red listed species, viz., Calicnemia nipalica and Protosticta himalaiaca are also reported. Reports of such rarely observed species highlight the need for further faunistic surveys in this otherwise less surveyed India-Bhutan international border region.