It is the largest family of true bugs belonging to the suborder Heteroptera; it includes over 10,000 known species, and new ones are being described constantly.

Miridae are small, terrestrial insects, usually oval-shaped or elongate and measuring less than 12 millimetres (0.5 in) in length.

Some are brightly coloured and attractively patterned, others drab or dark, most being inconspicuous.

One useful feature in identifying members of the family is the presence of a cuneus; it is the triangular tip of the corium, the firm, sclerotized part of the forewing, the hemelytron.

[2] This family includes a large number of species, many of which are still unknown, distributed in more than 1,300 genera.