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New Gecko Species Discovered in Vietnam's Karst Forests

ScienceEnvironment4/24/2026
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Researchers have identified a new species of gecko, Ziegler’s Slender Gecko (Hemiphyllodactylus ziegleri), in northern Vietnam. The discovery highlights the ongoing biodiversity in the region, though many habitats for such species are under threat.

Facts First

  • A new gecko species, Ziegler’s Slender Gecko, was discovered in the karst forests of northern Vietnam.
  • The species is the 12th known gecko in Vietnam and was found in the Copia Nature Reserve.
  • Genetic testing shows a 14% divergence from its closest relatives.
  • 85% of species in this genus have been described within the last decade.
  • The habitats of many newly described species are under threat.

What Happened

Researchers identified a new species of gecko, Ziegler’s Slender Gecko, during surveys in the Copia Nature Reserve in Son La province, Vietnam. The species is small and yellowish-grey in color and was observed at night on limestone cliffs and on an electric pole in a cornfield. Genetic testing revealed a 14% divergence between this new species and its closest relatives, a significant difference that confirms its unique status. The species was named in honor of Thomas Ziegler from the University of Cologne, Germany.

Why this Matters to You

This discovery underscores that our planet's biodiversity is still being actively cataloged, with 85% of species in this gecko genus described only in the last decade. For you, this means the natural world continues to reveal its complexity, even as many of these newly discovered habitats face threats. It highlights the importance of conservation efforts to protect these unique ecosystems and the species within them.

What's Next

The discovery of Ziegler’s Slender Gecko may lead to further surveys and research in Vietnam's karst forests to identify other potential cryptic species. Conservation efforts for the Copia Nature Reserve and similar habitats could be prioritized to protect these newly described species from environmental threats.

Perspectives

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Researchers view the discovery as an "exciting" validation of their existing theories, noting that the true diversity of cryptic geckos is "substantially underestimated."
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Environmental Observers suggest that the find serves as a reminder of the immense diversity contained within "the often-overlooked landscape."
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Academic Institutions recognize the professional merit of the work, noting that researchers are honored for their "outstanding contribution to biodiversity research and conservation in Vietnam."