Oxyserphus Narendrani - Parasitic Wasp

Prelims: Current events of national and international importance | Species

Why in News?

Recently, Scientists from the Zoological Survey of India (ZSI) discovered a new species of parasitic wasp in Dibru-Saikhowa National Park, Assam.

Oxyserphus Narendrani

It represents the 1^st official record of this rare group of wasps from the Oriental region.
The genus Oxyserphus is rarely represented in insect collections.
These species are typically found in high-altitude environments, so their presence in a lowland forest is significant.
Diagnostic Characteristics – The species is differentiated from related taxa based on microscopic morphological characteristics.
Key distinguishing features
- A black head
- A brownish-black body
- Yellow legs
- A single horizontal groove present on the lateral side of the thorax
- A relatively short ovipositor sheath
- A distinctive wing spot

Parasitic wasps – These are insects that deposit their eggs in or on other organisms, typically targeting other insects or arthropods.
The larvae of parasitic wasps develop by utilizing the host organism for nourishment and growth.
Consequently, parasitic wasps play a significant role in regulating populations of other insect species.
Many species of parasitic wasps contribute to the natural biological control of insect pests.

Dark Taxa – Organisms with poorly known diversity, hard detection, and undocumented distribution.

Yellow Pan Trap – It was employed to collect the specimen.
A yellow pan trap is a bright yellow, water-filled dish commonly utilized by entomologists.
This trap attracts a range of small insect species.
It is particularly useful for conducting insect biodiversity surveys and sampling.

Dibru‑Saikhowa National Park

Location – Dibrugarh and Tinsukia districts, Assam.
Origin – Established to conserve the rare white‑winged wood duck.
Boundaries – Bordered by the Brahmaputra and Lohit rivers to the north, and the Dibru river to the south.
Vegetation – Semi‑evergreen and deciduous forests, canebrakes, and grasslands.
The park contains the largest Salix swamp forest in Northeast India.
Climate – Tropical monsoon with hot, wet summers and cool, dry winters.
Flora – Key species include Hollong, Nahor, Simul, Sissoo, Khair, and Jamun.
Fauna – Notable wildlife includes Elephant, Wild Water Buffalo, Leopard, Clouded Leopard, Fishing Cat, Jungle Cat, Hog Deer, Sambar, and Barking Deer.

Reference

RM | Oxyserphus Narendrani - Parasitic Wasp