Some of the smallest insects are fairy wasps. Their size can vary from 0.02 to 0.03 in (0.5- 1.0 mm). With a length of only 0.006 inches, Dicopomorpha echmepterygis, the tiniest known insect, belongs to the Mymaridae family (0.13 mm). Kikiki huna, the tiniest flying creature, is a fairyfly as well and measures only 0.006 in (0.15 mm) in length.