The wingspan is 1.4 - 2.5 cm.

Dichorda illustraria is a butterfly from the family of the spanners (Geometridae). The scientific name of the species was first validly published in 1886 by Hulst.

Dichorda iridaria, the showy emerald moth, is a moth of the family Geometridae. The species was first described by Achille Guenée in 1857. It is found in North America, where it has been recorded from Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Ontario, Pennsylvania, Quebec, South Carolina, Tennessee, Texas, Virginia, West Virginia and Wisconsin. The wingspan is about 25–28 mm. The larvae feed on Rhus species, including Rhus typhina and Rhus copallina. and Toxicodendron radicans.

Iridopsis larvaria is a butterfly from the family of spanners (Geometridae). The scientific name of the species was first validly published in 1858 by Guenée.

Iridopsis vellivolata, the large purplish gray, is a species of geometrid moth in the family Geometridae. It is found in North America. The MONA or Hodges number for Iridopsis vellivolata is 6582.

The wingspan is 3 - 3.5 cm. Adults have dark brown or brown mottled wings.

The wingspan is 3.5 - 4 cm.

Melanolophia signataria, the signate melanolophia, is a moth of the family Geometridae. It is found from Nova Scotia to Florida, west to Saskatchewan and East Texas. The wingspan is 30–35 mm. Adults are on wing from March to August. The larvae feed on the leaves of a wide variety of trees, including alder, elm, birch, fir, larch, maple, oak, poplar and spruce.