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<p>Sensilla are specialized sensory structures that play vital roles in mediating insect-environment interactions such as feeding, host plant recognition, and mate detection. This study presents a comparative ultrastructural analysis of sensilla located on the proboscis, antennae, and forelegs of two butterfly species, <i>Papilio paris</i> Linnaeus, 1758 (family: Papilionidae) and <i>Hebomoia glaucippe</i> Linnaeus, 1758 (family: Pieridae), using scanning electron microscopy (SEM). We hypothesized that butterflies from different families exhibit distinct types, sizes, and shapes of sensilla, as well as varied distributions across their sensory appendages. A total of six types of sensilla were recorded across the two species. On the proboscis, both species shared sensilla chaetica I, while sensilla coeloconica and sensilla styloconica were exclusive to <i>P. paris</i> and <i>H. glaucippe</i>, respectively. In the antennae, <i>P. paris</i> exhibited three types of sensilla (chaetica I, chaetica II, and trichodea), whereas only sensilla trichodea were observed in <i>H. glaucippe</i>. On the forelegs, sensilla chaetica III were present in both species. A strong, statistically significant positive correlation was found in sensilla trichodea of <i>H. glaucippe</i> (<i>r</i> = 0.995, <i>p</i> &lt; 0.001), and in sensilla chaetica III of both <i>P. paris</i> (<i>r</i> = 0.9996, <i>p</i> &lt; 0.001) and <i>H. glaucippe</i> (<i>r</i> = 0.999, <i>p</i> &lt; 0.001). The study contributes to a better understanding of the morphological basis of sensory specialization in Lepidoptera and lays a foundation for further investigations into the ecological significance of sensillar variations.</p>

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Comparative ultrastructural analysis of sensory organs in Papilio paris Linnaeus (Papilionidae) and Hebomoia glaucippe Linnaeus (Pieridae)

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Kushal Choudhury,
  • Crony Wary,
  • Nirab Chandra Adhikary

摘要

Sensilla are specialized sensory structures that play vital roles in mediating insect-environment interactions such as feeding, host plant recognition, and mate detection. This study presents a comparative ultrastructural analysis of sensilla located on the proboscis, antennae, and forelegs of two butterfly species, Papilio paris Linnaeus, 1758 (family: Papilionidae) and Hebomoia glaucippe Linnaeus, 1758 (family: Pieridae), using scanning electron microscopy (SEM). We hypothesized that butterflies from different families exhibit distinct types, sizes, and shapes of sensilla, as well as varied distributions across their sensory appendages. A total of six types of sensilla were recorded across the two species. On the proboscis, both species shared sensilla chaetica I, while sensilla coeloconica and sensilla styloconica were exclusive to P. paris and H. glaucippe, respectively. In the antennae, P. paris exhibited three types of sensilla (chaetica I, chaetica II, and trichodea), whereas only sensilla trichodea were observed in H. glaucippe. On the forelegs, sensilla chaetica III were present in both species. A strong, statistically significant positive correlation was found in sensilla trichodea of H. glaucippe (r = 0.995, p < 0.001), and in sensilla chaetica III of both P. paris (r = 0.9996, p < 0.001) and H. glaucippe (r = 0.999, p < 0.001). The study contributes to a better understanding of the morphological basis of sensory specialization in Lepidoptera and lays a foundation for further investigations into the ecological significance of sensillar variations.