Lachesillidae (or fateful barklice) is a family of Psocodea (formerly Psocoptera) belonging to the suborder Psocomorpha. Members of the family are characterized by a rounded, free areola postica in their wings. Males have diverse sclerotized genitalic structures. The family includes more than 400 species, most of them in the genus Lachesilla.

These 26 genera belong to the family Lachesillidae:

Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net