The Top 5 Most Common Species of Insects

  Insect Species Estimated Number of Species
Beetles (Coleoptera) 500,000
Butterflies & Moths (Lepidoptera) more than 160,000
Ants, Bees and Wasps (Hymenoptera) 140,000
True flies (Diptera) 120,000
Bugs (Hemiptera) 90,000
Sources:  Various
List Notes: List is of known insects as of the year 2004.
  1. Beetles are the largest order in the animal kingdom.
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