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Rediscovery of World’s Smallest Snake Spurs Expanded Habitat Surveys in Barbados

Biologists aim to chart the species’ elusive underground territory to guide protections after its first confirmed appearance in nearly 20 years.

The Barbados threadsnake, missing for nearly 20 years, was rediscovered in March 2025.
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Barbados threadsnake (Tetracheilostoma carlae) (Connor Blades 2025)

Overview

  • Measuring just 7.5–10 centimeters, the blind threadsnake burrows underground to feed on termites and ants and reproduces by laying a single slender egg per clutch.
  • Researchers confirmed the March 20 rediscovery during a central Barbados forest survey and used microscopic examination to distinguish the threadsnake from the similar-looking invasive Brahminy blind snake.
  • First described in 2008 by S. Blair Hedges from limited specimens, the threadsnake had evaded detection since 2005 and was feared extinct until this year’s finding.
  • Barbados has lost 98 percent of its primary forests since European colonization, and many endemic species have gone extinct, underscoring the urgent need for habitat protection.
  • The Barbados Ministry of Environment, Re:wild and the University of the West Indies will conduct comprehensive surveys to delineate the threadsnake’s distribution and establish targeted conservation protocols.