Insekten____insects

Insects, also Kerbtiere or Kerfe called, are the species-richest class of the arthropods and at the same time with absolute majority also species-richest class of the animals at all. Nearly one million insect species have been scientifically described, making more than 60 percent of all described animal species insects. According to various projections, however, a multiple is expected, with millions of undiscovered species still being suspected, especially in the tropical rainforests. Fossil insects were first identified around 400 million years ago.