International Science Community Association International Research Journal of Biological Sciences 14 4 2025 11 10 Investigation of Butterfly Species in Gairsain block of Chamoli District, Uttarakhand, India 11 17 EN Khyade Vitthalrao Bhimasha 1 Department of Zoology, Sharadabai Pawar Mahila Arts, Commerce and Science College, Shardanagar Tal. Baramati Dist. Pune – 413115, India Khanapure Nikhil Pandit 2 Department of Chemistry, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, Maharashtra-413 255, India . Shilpa 1 Department of Zoology, SSJDWSSS GPG College Ranikhet–263645, Uttarakhand, India Pandey Deepa 2 Department of Zoology, SSJDWSSS GPG College Ranikhet–263645, Uttarakhand, India Kumar Shankar 3 Department of Mathematics, SSJDWSSS GPG College Ranikhet–263645, Uttarakhand, India > Research Paper 2025 8 10 2025 11 10 Butterflies are vital indicators of ecological health and also enhance the aesthetic value of habitats. This study examines the butterfly species, abundance and diversity from the Gairsain block in Chamoli district, Uttarakhand, India. Field surveys were carried out from March 2023 to March 2025 in the study area. In the study area, we noted 2,223 individuals, 61 species across 6 families & 18 subfamilies within the super family Papilionoidea, during the research. The Nymphalidae family is dominant at 36%, followed by Pieridae at 21%, Lycaenidae at 18%, Papilionidae at 10%, Hesperiidae at 10%, and Riodinidae at 5%, making it the least common. Notably, species listed under the Wildlife (Protection) Act, 2022, such as Delias sanaca (Schedule I) and Graphium cloanthus (Schedule II), were also documented. The results highlight the region's rich butterfly diversity and emphasise the importance of conserving local habitats to sustain a healthy environment. This research provides a valuable baseline for future studies, conservation efforts, and the promotion of butterfly-based ecotourism in Uttarakhand. Copyright@ International Science Community Association