In 1983, American entomologist Justin O Schmidt from the Carl Hayden Bee Research Center in Arizona, USA, published a detailed pain index of insect stings, based on a four-point scale, having tested a very large number of different species of stinging insect upon himself. The most painful sting, registering 4.0+ on his index, was that of the bullet ant Paraponera clavata, native to Nicaragua and southwards through Central America to Paraguay in northern South America. Schmidt described its sting as: "like walking over flaming charcoal with a 3-inch rusty nail in your heel". Others have said that the pain is like being shot – hence its name, "bullet ant".
Time difference between Nicaragua and United Kingdom: Information about time zones and time difference between countries Nicaragua and United Kingdom. The time shown here apply Daylight Saving Time when required.