New butterfly species recorded in Arunachal named after Zubeen Garg

What Happened

• A new butterfly species, Euthalia zubeengargi, has been recorded in the Basar region of Leparada district, Arunachal Pradesh, and named after celebrated Assamese singer and cultural icon Zubeen Garg
• Researchers have proposed "Basar Duke" as the common name for the species, reflecting its discovery location
• The species belongs to the genus Euthalia (family Nymphalidae), a group of medium-to-large, often metallic-coloured brush-footed butterflies widespread across South and Southeast Asia
• Arunachal Pradesh has been a hotspot for butterfly discoveries — in 2025, Euthalia malaccana was first confirmed in India from the same Basar area of Leparada district; and six other butterfly species new to India were recorded from the Siang Valley in the same state
• The discovery adds to India's rich lepidopteran diversity and underscores the ecological significance of Arunachal Pradesh as a global biodiversity hotspot
• Naming species after cultural figures (rather than solely taxonomists or royalty) is a growing trend to raise public awareness of biodiversity

Static Topic Bridges

Biodiversity Hotspots and Arunachal Pradesh

A biodiversity hotspot is defined by two criteria established by Conservation International: the region must have at least 1,500 species of endemic vascular plants, and it must have lost at least 70% of its original habitat. There are 36 recognised biodiversity hotspots globally, covering about 2.4% of Earth's land surface but harbouring more than 60% of the world's plant, reptile, amphibian, bird, and mammal species. India lies within three hotspots: the Himalaya (including the Eastern Himalaya, which encompasses Arunachal Pradesh), the Western Ghats–Sri Lanka hotspot, and the Indo-Burma hotspot. The Eastern Himalaya is one of the richest biodiversity zones on Earth — its butterfly fauna alone exceeds 1,000 species. Arunachal Pradesh, with over 5,000 known plant species, 500+ bird species, and 300+ mammal species, is considered India's most biodiverse state.

Taxonomy, Nomenclature, and the Convention on Biological Diversity

Biological taxonomy is the science of classifying living organisms. Species nomenclature follows the International Code of Zoological Nomenclature (ICZN), under which species names are in Latin or Latinised form, italicised, and binomial (genus + species epithet). Naming a species after a person (using genitive case of their name) is called eponymy, a common and legally valid practice under ICZN. The Convention on Biological Diversity (CBD), adopted in 1992 at the Rio Earth Summit, is the primary international treaty governing biodiversity conservation, sustainable use, and access and benefit-sharing (ABS). India ratified the CBD in 1994. Under the Nagoya Protocol (2010, entered into force 2014) — a supplementary agreement to the CBD — countries have sovereign rights over their genetic resources and traditional knowledge associated with them.

Butterfly Diversity and the Nymphalidae Family

Butterflies belong to the order Lepidoptera and are classified into six families in India: Papilionidae (swallowtails), Pieridae (whites and yellows), Lycaenidae (blues and hairstreaks), Riodinidae (punches and judies), Hesperiidae (skippers), and Nymphalidae (brush-footed butterflies — the largest family). Euthalia belongs to Nymphalidae, the family that includes species like the Indian Fritillary, Common Sergeant, and many Duke butterflies. The genus Euthalia alone contains over 100 species across Asia. Butterflies are important ecological indicators — their diversity and population health reflect the overall health of ecosystems, making them key bioindicators for conservation assessments. India's Wildlife Protection Act (WPA), 1972 provides protection to certain butterfly species listed in its schedules.

Cultural Significance: Zubeen Garg and Northeast India's Heritage

Zubeen Garg is one of the most celebrated musicians of Northeast India, known for his contributions to Assamese folk, film, and contemporary music over three decades. The practice of naming biological discoveries after cultural icons (rather than scientists or political figures) serves a dual purpose: it honours the named individual's contribution to society and draws public attention to biodiversity conservation. Similar precedents include species named after David Bowie (Heteropoda davidbowie — a spider), Sir David Attenborough (multiple species), and Barack Obama (Aptostichus baracki — a trapdoor spider). In India, species have been named after figures such as Sachin Tendulkar (a spider genus) and A.R. Rahman. The practice aligns with the CBD's emphasis on raising public awareness of biodiversity as a cultural and national asset.

Key Facts & Data

• Species: Euthalia zubeengargi (new species)
• Common name proposed: Basar Duke
• Discovery location: Basar region, Leparada district, Arunachal Pradesh
• Family: Nymphalidae; Genus: Euthalia
• Named after: Zubeen Garg, Assamese musician and cultural icon
• Related recent discovery from same area: Euthalia malaccana (first recorded in India, Basar, 2025)
• Six butterfly species new to India: Siang Valley, Arunachal Pradesh (October 2025)
• India's total butterfly species: ~1,500+
• Arunachal Pradesh butterfly species: 1,000+ (highest in India)
• India's biodiversity hotspots: Eastern Himalaya, Western Ghats–Sri Lanka, Indo-Burma
• Biological Diversity Act: 2002; National Biodiversity Authority established: 2003
• CBD: adopted 1992; India ratified 1994; Nagoya Protocol: 2010/2014