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Fairyflies include the smallest known insect, "Dicopomorpha echmepterygis" from Costa Rica, which have males that are only long. They do not have wings or eyes, their mouths are mere holes, and their antennae are simply spherical blobs. The ends of their legs have been modified into suction cups for clutching at females long enough to fertilize them. They are so small, their entire bodies are smaller than a single-celled "Paramecium". Four male individuals, lined up end-to-end, would just about encompass the width of a period at the end of a typical printed sentence. The females of the species, however, are typical fairyflies, and are much larger. The smallest flying insect is also a mymarid, "Kikiki huna" from Hawaii, which is long.
Dicopomorpha echmepterygis