t
high
No known importance.
Small size and dense protective hairs.
Normal adult length: <4 mm
Body tagmata: head, trunk (11–13 segments)
Eyes: 3–8 ocelli
Antennae: relatively short
Mouthparts: mandibles, maxillae (gnathochilarium)
Legs: 3-numerous pairs, two pairs per diplosegment in middle of body Respiration: cuticular
Gonopore: venter of 3rd trunk segment (behind 2nd pair of legs)
Distinguishing features: dense bristly hairs in lateral bands, posterior pencil tufts, trichobothria on head