Researchers from India and Sri Lanka have identified three previously unknown jumping spider species in the Western Ghats and shola forests. The discovery highlights the unique evolutionary history of these high‑altitude habitats and underscores urgent conservation needs.
मुख्य बिंदु (Key Takeaways)
- Two species discovered in Brahmagiri Hills and Silent Valley, one in Sri Lanka's montane forests.
- All species are endemic to isolated shola ecosystems, making them highly vulnerable.
- Findings call for immediate protection of Western Ghats shola habitats against climate threats.
A joint research team led by Athira Jose, a PhD scholar at Christ College, Irinjalakuda, and Professor A.V. Sudhikumar, in collaboration with Professor S.P. Benjamin of Sri Lanka's National Institute of Fundamental Studies (NIFS), announced the discovery of three new Onomastus jumping spider species. The genus belongs to one of the oldest lineages of Salticidae and is confined to the Oriental region.
New Species Described
The first species, Onomastus brahmagiri, was collected from the Brahmagiri Hills in Wayanad. The second, Onomastus silentvalley, hails from the shola forests of Silent Valley National Park in Palakkad. The third, Onomastus wijesinghei, originates from the montane forests of Sri Lanka. All three descriptions were published in the peer‑reviewed journal Zootaxa.
Rediscovery of a Century‑Old Species
During the same expedition, the team re‑identified Onomastus patellaris in Tamil Nadu’s Pampadum Shola National Park, a species unseen by humans for over a hundred years. This finding reinforces the Western Ghats’ role as a biodiversity hotspot where isolated “sky islands” foster long‑term geographic isolation and high endemism.
Ecological Implications and Conservation Urgency
Because these spiders are confined to mist‑laden highland shola forests and exhibit limited dispersal abilities, they are especially susceptible to rising temperatures, habitat degradation, and other climate‑change impacts. The researchers argue that protecting shola ecosystems is critical not only for preserving these unique taxa but also for maintaining the evolutionary processes that generate such diversity.
