The mysterious tail of Aptostichus ramirezae: A spider with a tail like a scorpion

A rare trapdoor spider, Aptostichus ramirezae, discovered in Iran, features a tail-like appendage, a trait thought extinct for millions of years. This ‘living fossil’ offers a unique glimpse into early spider evolution, blurring lines between ancient and modern arachnids. Its tail, a sensitive sensory tool, aids survival in arid burrows, highlighting the importance of biodiversity research and habitat preservation.