Symphylans are not insects. They are 3 to 6 mm
long, white, with prominent antennae and numerous
legs. Newly hatched nymphs have six pairs of legs,
but at each molt an additional pair of legs is added,
until the adult stage which has 12 pairs of legs. This
pest spends its entire life cycle in soil. Symphylans
are distinguished from centipedes by their smaller
size, and white color.