Scientists have described a new species of parasitic wasp from Dibru-Saikhowa National Park in Assam, adding another unusual species to India’s known insect biodiversity. The species, named Oxyserphus narendrani, measures only about 3.3 millimetres and represents the first record of the genus Oxyserphus from India.
The discovery is significant because it extends the known geographical range of the genus into India and adds a new taxonomic record from one of the country’s most biologically rich landscapes.
Oxyserphus narendrani Adds a New Genus Record for India
The newly described wasp belongs to the family Proctotrupidae, a group of parasitoid wasps whose larvae develop in or on other insects.
These wasps are small and often overlooked, but they play an important ecological role by helping regulate insect populations naturally.
The identification of Oxyserphus narendrani expands India’s documented diversity within this group and highlights how much remains to be studied among the country’s smaller insect species.
A Tiny Wasp With Distinctive Features
Despite measuring only around 3.3 mm, the new species has several anatomical features that distinguish it from closely related wasps.
Researchers identified the species through detailed examination of its body structure, including characteristics of the thorax, wings, legs and ovipositor.
Such minute morphological differences are central to insect taxonomy, where closely related species can often be separated only through careful microscopic study.
Named in Honour of Indian Entomologist T. C. Narendran
The species has been named Oxyserphus narendrani in honour of the late Dr T. C. Narendran, one of India’s respected entomologists known for his work on parasitic wasps.
The naming reflects the contribution of Indian taxonomists who spent decades documenting insect diversity across the country.
Their work remains especially important in regions such as Northeast India, where many insect groups are still incompletely studied.
Dibru-Saikhowa National Park Remains a Biodiversity Hotspot
The discovery once again draws attention to Dibru-Saikhowa National Park in Assam, a landscape known for its rich mixture of forests, wetlands, grasslands and riverine habitats.
The park supports a wide variety of mammals, birds, reptiles, insects and aquatic species and forms part of the larger biodiversity-rich landscape of eastern Assam.
Its dynamic floodplain ecosystem creates numerous specialised habitats, many of which remain insufficiently surveyed at the insect level.
Parasitoid Wasps Are Important Natural Regulators
Parasitoid wasps occupy an important place in natural ecosystems because they help control populations of other insects.
Many species lay their eggs in or on host insects, and the developing larvae feed on those hosts.
This ecological role makes parasitoid wasps important components of food webs and natural biological control systems.
Although Oxyserphus narendrani is extremely small, its discovery contributes to a better understanding of these interactions and the diversity of insect life in Indian protected areas.
Assam Discovery Highlights India’s Hidden Insect Diversity
The importance of this discovery lies not in the size of the insect but in the fact that an entire genus has now been recorded from India for the first time.
New insect records often reveal gaps in existing biodiversity surveys and show how much of India’s smaller fauna remains undocumented.
For Dibru-Saikhowa, the finding adds another layer to the biological importance of the national park and strengthens the case for detailed taxonomic surveys alongside conventional wildlife monitoring.
The discovery of Oxyserphus narendrani is a reminder that some of India’s most important biodiversity findings can come from organisms measuring only a few millimetres.
References
Zoological Survey of India — Research associated with the description of Oxyserphus narendrani.
Research Matters — Report on the discovery of the new parasitic wasp from Dibru-Saikhowa National Park, September 2026.
Government of Assam, Environment and Forest Department — Official information on Dibru-Saikhowa National Park.
Tinsukia District Administration, Government of Assam — Official profile of Dibru-Saikhowa National Park.
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