Tetragonula yikhumensis – India's Newly Discovered Stingless Bee

Tetragonula yikhumensis – India's Newly Discovered Stingless Bee

Context

Researchers from Nagaland University and the Zoological Survey of India (ZSI) have discovered a new species of stingless bee named Tetragonula yikhumensis. Identified from Yikhum village in Wokha district of Nagaland, it is the largest stingless bee species recorded in India. The discovery was published in the international journal Sociobiology on 22 July 2026 and represents an important addition to India's insect biodiversity.

History of the Issue

India is one of the world's biodiversity-rich countries, particularly in the North-East, which forms part of the Indo-Burma Biodiversity Hotspot. Despite its rich ecological diversity, many insect species remain scientifically undocumented. Stingless bees (Tribe: Meliponini) are known for their important role in pollination, honey production, and ecosystem health. Advances in DNA barcoding and integrative taxonomy have enabled researchers to identify previously unknown species with greater accuracy. The discovery of Tetragonula yikhumensis highlights the ecological importance of conserving India's lesser-known pollinators.

Salient Features

• Discovered by researchers from Nagaland University and ZSI.
• Named after Yikhum village, where the first nest was collected.
• Body length of about 5.59 mm, making it the largest stingless bee recorded in India.
• Identified using morphological analysis and DNA barcoding.
• A subterranean (ground-nesting) species with nests found more than 2 metres underground.
• Nests contain separate chambers for honey, pollen, and brood, protected by batumen (a mixture of wax and plant resins).
• Plays a vital role in pollinating wild plants and agricultural crops.
• Produces medicinal honey valued by the local Lotha Naga community.

India's Stand

India places high importance on biodiversity conservation, scientific research, and protection of pollinators under its commitments to the Convention on Biological Diversity (CBD) and national biodiversity conservation programmes. The country encourages documentation of new species to strengthen ecological research, sustainable agriculture, and conservation planning.

Significance

The discovery increases the number of known stingless bee species in India from 25 to 26, while the genus Tetragonula now includes 18 recorded species in the country. As efficient pollinators, stingless bees support forest regeneration, crop productivity, and food security. Their medicinal honey also has economic and livelihood value for local communities.

Current Status

Tetragonula yikhumensis is presently classified as Data Deficient, indicating that more field studies are needed to determine its distribution, population status, and conservation requirements. Researchers continue to study its ecology, behaviour, and pollination role to support future conservation efforts and sustainable use.

Analytical Questions

1. Why is the discovery of a new bee species important even if it has no immediate commercial value?

Answer: Every species has a role in nature. A new bee may pollinate plants that other insects cannot. It helps maintain forests, biodiversity, and food production. Even if there is no immediate economic benefit, protecting such species strengthens ecosystems that support agriculture, livelihoods, and environmental stability.

2. Why are stingless bees important for agriculture and food security?

Answer: Stingless bees are efficient pollinators. They help many crops produce more fruits and seeds. Better pollination improves both crop quality and yield. Since they do not sting, they are easier to manage in farming areas. Protecting them directly supports farmers, biodiversity, and long-term food security.

3. Why should local communities be involved in conserving newly discovered species like Tetragonula yikhumensis?

Answer: Local people know the forests, species, and traditional uses better than anyone else. Their knowledge can help scientists understand the species. Community participation also improves habitat protection and sustainable use. Conservation becomes more successful when local livelihoods and biodiversity are protected together.

4. What challenges may arise in conserving a species that is classified as "Data Deficient"?

Answer: When information is limited, it is difficult to estimate population size, threats, or habitat needs. Without proper data, conservation planning becomes uncertain. Researchers must first conduct field surveys and ecological studies. Better scientific information is the foundation for effective protection and long-term monitoring.

5. How can discoveries like Tetragonula yikhumensis strengthen India's environmental policies?

Answer: Such discoveries show that many species are still unknown, especially in biodiversity-rich regions. They encourage more scientific research, habitat conservation, and stronger environmental planning. They also support evidence-based policies for protecting pollinators, forests, and ecosystems while promoting sustainable agriculture and local community participation.