Body oval to elongate oval; flat to slightly convex in lateral view; body light green, often transparent, usually with a U-shaped or V-shaped pattern in the middle of the body formed by black spots; not turning dark with age; without an obvious wax covering; ovisac absent. Occurring on arboreal parts of plant, particularly the undersides of leaves. Males normally absent, mentioned as present by Kohler1976, Kohler1977, Kohler1978) depending on population density. Kohler1978 also mentioned two "races" one that is parthenogenetic and the other that is sexual. Eggs hatch within the body of the female.
Coccus viridis also is similar to C. hesperidum Linnaeus but differs by having the marginal setae strongly fimbriate (these setae are weakly fimbriate or simple in C. hesperidum) the multilocular pores are common anterior of the vulvar segments (the multiloculars are rare anterior of the vulva on C. hesperidum), and the dorsal setae are capitate (they are pointed in C. hesperidum).
U.S. quarantine notes
This species was intercepted 5,332 times on a variety of hosts at U. S. ports-of-entry between 1995 and 2012, and is the most commonly intercepted soft scale taken at U. S. borders. These interceptions originated from American Samoa, Antigua and Barbuda, Aruba, Bahamas, Barbados, Colombia, Cook Islands, Costa Rica, Cuba, Dominica, Dominican Republic, Ecuador, El Salvador, Fiji, Grenada, Guatemala, Haiti, Hawaii, Honduras, India, Jamaica, Laos, Malyasia, Mexico, New Caledonia, Nicaragua, Pakistan, Panama, Peru, The Philippines, Puerto Rico, Spain, Sri Lanka, Suriname, St. Kitts and Nevis, St. Lucia, St. Maarten, St. Vincent and the Grenadines, Taiwan, Tahiti, Thailand,Togo, Tonga, Trinidad and Tobago, The U.S. Virgin Islands, and Vietnam. It is commonly intercepted from nearly all tropical areas of the world that send plant material to the United States of America; therefore older quarantine records are not given. ScaleNet includes hosts in over 50 plant families from 60+ countries worldwide in all zoogeographic regions. Two species of Coccus other than C. capparidis Green, C. hesperidum Linnaeus, C. longulus (Douglas), C. moestus De Lotto, C. pseudohesperidum (Cockerell) and C. viridis have been taken at U. S. ports-of-entry, C. alpinus De Lotto (Brazil, on Coffea) and C. celatus (The Philippines, on Dimocarpus, Lansium and Synsepalum).