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What is Dolomedes indicus?

Dec. 6, 2025

In the evergreen rainforests of the Western Ghats, researchers recently identified a new species of spider named Dolomedes indicus.

About Dolomedes indicus:

  • It is a new species of spider.
  • It was discovered in the evergreen rainforests of the Western Ghats, in the Wayanad district of Kerala.
  • It marks the first time a spider of the Dolomedes genus, commonly known as raft or fishing spiders, has been described in India.
    • Unlike the common house spiders that wait passively in webs, Dolomedes indicus is an active, semi-aquatic predator that uses the water’s surface tension to its advantage.
  • It appears to be highly sensitive to its environment, thriving only in pristine, cool waters under a forest canopy.
  • It could serve as a vital indicator species, helping conservationists monitor the health of freshwater ecosystems.

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