ZSI Discovers Two New Lichen Moth Species in Eastern Himalayas

Scientists from the Zoological Survey of India (ZSI) have discovered two new species of lichen moths in the eastern Himalayan region, highlighting the rich biodiversity of the area. The newly identified species — “Caulocera hollowayi” and “Asura buxa” — were formally described by Indian researchers and published in the international taxonomic journal “Zootaxa” on March 2, 2026. The discovery contributes to expanding scientific knowledge of India’s insect diversity, particularly within the Lepidoptera group.

New Species Found in Sikkim and West Bengal

The two newly documented species were identified from specimens collected in different parts of the eastern Himalayas. “Caulocera hollowayi” was discovered from samples collected near Golitar in Sikkim, while “Asura buxa” was identified from specimens found in Panijhora in West Bengal.

The research was conducted by a team of Indian scientists including Navneet Singh from ZSI Kolkata, Santosh Singh from the Central Zone Regional Centre of ZSI in Jabalpur, and Srishti Bhattacharya, a senior research fellow at ZSI. The formal naming of these species recognises them as previously unknown to science and enables accurate global classification.

Importance of Taxonomic Identification

Taxonomic naming plays a crucial role in scientific research as it allows species to be correctly identified, catalogued, and studied. Such documentation helps researchers understand biodiversity patterns, evolutionary relationships, and conservation priorities.

Along with describing the two new species, the research paper also reported seven additional species of lichen moths recorded in India for the first time, further expanding the country’s documented moth diversity.

Distinct Physical and Structural Characteristics

Researchers distinguished the new species through detailed examination of their physical and microscopic features. Differences in wing colour patterns, band markings, and body structures were key indicators used for identification.

Scientists also studied specialised reproductive structures commonly used in insect taxonomy. Additional analysis of microscopic body scales and the arrangement of bristles — known as chaetotaxy — confirmed that the specimens represented previously unknown species.

Important Facts for Exams

• The Zoological Survey of India (ZSI) is a premier organisation under the Ministry of Environment, Forest and Climate Change.
• Lichen moths belong to the order Lepidoptera, which also includes butterflies and other moth species.
• The eastern Himalayas are recognised as one of the world’s major biodiversity hotspots.
• The scientific journal “Zootaxa” publishes taxonomic research related to animal biodiversity.

Ecological Role of Lichen Moths

Lichen moths play an important ecological role because their caterpillars feed on lichens. Lichens are highly sensitive to environmental pollution, particularly air pollution.

As a result, the presence or absence of lichen moth populations can serve as an indicator of environmental health. Monitoring these insects helps scientists assess air quality and ecosystem conditions, especially in fragile mountain environments such as the Himalayan region.