Bug (Assassin Thread-legged) Subfamily Emesinae .
Common name: Thread-legged assassin bugs
Thread-legged assassin bugs are stalking, terrestrial, ambush predators. They have a slender body form and walk on their mid and hind legs; the front pair is raptorial. The term raptorial refers to modifications of an arthropod's foreleg that make it function for the grasping of prey while it is consumed, where the gripping surfaces are formed from the opposing faces of two successive leg segments. They have a worldwide distribution.
Thanks to Wikipedia for text and information http://creativecommons.org/licenses/by-sa/3.0/