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New species of jumping spiders

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March 06, 2025

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A collaborative research involving the University of Kerala has reported the discovery of two new species of jumping spiders belonging to the genus Epidelaxia from the Shendurney Wildlife Sanctuary.

  • The new species of jumping spiders discovered in Shendurney Wildlife Sanctuary in Kollam, Kerala.
  • New species - Epidelaxia falciformis sp. nov. and Epidelaxia palustris sp. Nov.
  • Genus – Epidelaxia, 1st time the genus has been recorded from India, was previously considered endemic to Sri Lanka.
  • Distinction - Characterised by their striking physical features, which include a prominent yellow triangular-shaped mark on the prosoma (the front part of the body) of females and
    • Unique traits of the copulatory organs in both males and females.
  • Appearance - Males of E. falciformis have a brown carapace with a yellow-brown stripe, while males of E. palustris feature a pale brown band along the side of their bodies.
  • The females exhibit similar colouration, with the added feature of white orbital setae around their eyes.
  • Size - The species vary slightly in size, with E. falciformis measuring 4.39 mm.
  • E. palustris measures 4.57 mm in males and 3.69 mm in females.
  • Habitat - These spiders have been described as highly adapted to their environment, inhabiting the dense foliage of the Western Ghats.

E. palustris

Reference

The Hindu | New species of jumping spiders

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