The studies on species diversity of Butterflies was conducted in and around Asan Conservation Reserve and RAMSAR site, District Dehradun, Uttarakhand, India during 2021-24. The identification and synthesis of studies resulted into New records of about 43 species of butterflies from the study area, in that Nymphalidae is the dominant family having 22 species followed by Pieridae 13 species, Lycaenidae 06 species and least by Papilionidae 02 species. The study area was divided into four sectors and recorded maximum number of 43 species in the Sector-II (in wetland vegetation opposite end Asan Barrage), followed by 26 species in Sector-I (vegetation around Asan Barrage), 23 species in Sector-III (vegetation around Asan River) and least 17 species in Sector-IV (vegetation around Yamuna river), which indicates that maximum species of Butterflies prefers Sector-II study area having Wetland vegetation as suitable habitat to complete their life cycle. One of the new recorded species, Hypolimnas misippus (Linnaeus, 1764) is listed in Schedule II of Indian Wildlife (Protection) Amendment Act, 2022. By the efforts of Government of India, firstly the Asan Barrage Bird Sanctuary established in 1967, further declared as Asan Conservation Reserve in 2005 and as First RAMSAR site of Uttarakhand in 2020, which designates it as Wetland of International importance and playing significant role in the conservation of wetland habitats for the survival of biodiversity

New Records, Butterflies, Diversity, Asan Conservation Reserve, Uttarakhand, India

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Gaurav Sharma, Manoj Kumar Meena, Maya Choudhary and Purbita Roy Sharma (2025). New Records on the Species Diversity of Butterflies (Lepidoptera: Insecta) in and around Asan Conservation Reserve and RAMSAR site, Uttarakhand, India and Efforts on their Conservation. International Journal of Theoretical & Applied Sciences, 17(1): 68–74