[3] Adult females of many felt scales produce a white, yellowish or gray membranous capsule or ovisac that encloses the pyriform (pear-shaped) body.

The body itself varies in colour and may be pink, red or purple, green or brown.

The posterior end of the sac has a small opening that allows newly hatched nymphs to emerge.

Some species occur under the bark of the host plant and produce little or no ovisac secretion.

They occur on various hosts including trees, shrubs and grasses, and on most plant parts.