typhlonectes:Ravine Trapdoor SpidersThis is the cyclosmia (or ravine trapdoor spider), and its incre
typhlonectes:Ravine Trapdoor SpidersThis is the cyclosmia (or ravine trapdoor spider), and its incredible abdomen looks like an ancient coin! This genus of spider lives in burrows, and it uses the hardened disc at the end of its abdomen to clog the entrance when it’s threatened. They live in the Western U.S. and Mexico, and Eastern Asia. Images: jylppy69 via Biologia com o Prof. Jubilut and Eigenes Werk(via:Science Alert) -- source link