Body flattened, generally reddish-brown or pink, with apex of abdomen heavily sclerotized and dark brown. Usually with small amount of white wax ventrally and on head. Occurring in leaf sheaths or in crown of plant near soil surface. Species of Rhodesaclerda and Kwazulaclerda produce abundant wax dorsally similar to species of wax scales in the genus Ceroplastes.
Flat grass scales are primarily found on grasses, generally in grass sheaths or in the crown near the soil surface. Rhodesaclerda species occur on Combretum in the Combretaceae, Aclerda tillandsiae Howell occurs on Tillandsia in the Bromeliaceae, and Kwazulaclerda loranthi occurs on Loranthus in the Loranthaceae.
Aclerdids apparently have 4 instars in the female and 5 in the male. Little is known about the biology of these cryptic species but most apparently have a single generation each year and the second-instar male forms a delicate test similar to the ones constructed by soft scales.