Lachung Valley

1. Sikkim’s Lachung Valley expedition reveals 44 butterfly species, showcasing diverse altitudes.
2. The Thamblyok-BSONS team leads an expedition spanning altitudes from 1663 to 4276 meters.
3. Discovery underscores the rich biodiversity and ecological importance of the Himalayan region.


Gangtok, May 20: A recent expedition in Sikkim’s Lachung Valley, organized by the Wiki Love Butterfly (WLB) project in collaboration with local partners, unveiled the presence of 44 butterfly species across diverse altitudes, offering a captivating insight into the region’s biodiversity, as reported by media.

Led by the Thamblyok-BSONS team, the expedition journeyed through altitudes ranging from 1663 meters in the Chungthang belt to 4276 meters in the valleys of Yumthang, Damong, Katao, and Chungthang.

Among the discoveries were rare species like Ladakhi and Swallowtail, enhancing the natural allure of the area. “It’s awe-inspiring to witness the diverse sizes, colors, and patterns of these butterflies,” expressed the group, emphasizing the importance of involving youth in butterfly documentation.

The inaugural expedition for Thamblyok-BSONS in Lachung signifies a significant stride in ongoing endeavors to document and conserve North Sikkim’s butterfly populations.

By meticulously recording species data, the group not only contributes to scientific comprehension but also fosters eco-tourism and environmental education in the region.


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“Lachung emerges as a prime destination for butterfly enthusiasts, offering not only visual delights but also insights into the delicate ecosystems of the Himalayas,” remarked the Thamblyok-BSONS team.

The expedition also shed light on intriguing aspects of butterfly behavior, including their attraction to flowering fields and their unique interactions around livestock sheds.