A miniature peacock spider with rainbow-iridescence. a) An adult male Maratus robinsoni. b) A M. robinsoni resting on a human fingernail: the spider is only ~?2.5?mm in size. The iridescent ...

Males also do a sexy shimmy to dazzle the ladies. Measuring no bigger than 0.2 inches (2.5 centimeters), the sparklemuffin ...