(subclass Apterygota, order Archaeognatha)
One of the two present-day archaeognathan families, whose members are distinguished from the Machilidae by the possession of very small abdominal sternites which protrude slightly between the coxal plates. The legs and scape, and the pedicel of the antennae, are not covered with scales. Principally a southern-hemisphere taxon, members of the family are found on coastal cliffs, in forests, and in rain forests.
Subjects: Zoology and Animal Sciences.