Mexican Red-kneed Tarantula at the Artis Royal Zoo, Amsterdam (Holland)
This photo was taken by my nephew Dave Ferket (age 13)
Mexican Red-kneed Tarantula is a terrestrial tarantula native to the western faces of the Sierra Madre Occidental and Sierra Madre del Sur mountain ranges in Mexico. Mexican Red-kneed Tarantulas are large, dark spiders that range from 12 to 14 cm (4.7 to 5.5 in) in length. They have a black abdomen that is covered in brown hairs. Their legs have orange to dark red-orange joints, giving them their name. Their carapace is creamy beige in color and has a distinctive black square. The cephalothorax has four pairs of legs, a pair of pedipalps, and hollow fanged chelicerae connected to venom glands. They hold and catch prey with the first 2 legs and walk with the other legs. There are 2 pairs of spinnerets on the posterior side of their abdomen. Adult males have special copulatory organs located on their pedipalps. Females are generally larger than males.