Scutigerellidae Scolopendrellidae Symphylans, also known as garden centipedes or pseudocentipedes, are soil-dwelling arthropods of the class Symphyla in the subphylum Myriapoda.

[3] Symphyla are primarily herbivores and detritus feeders living deep in the soil, under stones, in decaying wood, and in other moist places.

[4] They are rapid runners,[4] can move quickly through the pores between soil particles, and are typically found from the surface down to a depth of about 50 centimetres (20 in).

Disc-like organs of Tömösváry, which probably sense vibrations, are attached to the base of the antennae, as they are in centipedes.

[2] The trunk comprises 14 segments, which is covered by microhairs on the lateral and ventral integument, and by a various number of dorsal tergal plates, from 15 in Scutigerella and Hanseniella, and up till 24 in Ribautiella, increasing the flexibility of the body.

[1] Each pair of legs is associated with an eversible structure, called a "coxal sac", that helps the animal absorb moisture, and a small stylus that may be sensory in function.

She then lays her eggs, and attaches them to the sides of crevices or to moss or lichen with her mouth, smearing the sperm over them as she does so.

[23] One fossil species, Symphylella patrickmuelleri, was found preserved in Burmese Amber releasing long threads of silk.

The oldest records of both families are found in Burmese amber from the middle Cretaceous, approximately 99 million years ago.