Dicopomorpha echmepterygis males are the smallest known adult insects.
They also differ greatly from the females. The males are completley blind and wingless.
Their body length is only 0.139 to 0.240 mm. Their size makes the males the smallest known adult insects here for more info.
The wasp is native to Eastern North America.
FUN FACTS
How does the wasp compare to a Dust Particle?