Body red, legs and antennae black, covered by layer of white to cream colored wax, median area sometimes with lemon yellow wax, marginal areas with fringe of wax processes all about same length; margin of body with long crystalline rods. Immature stages red, covered by lemon yellow wax. Ovisac produced below and behind female, conspicuously fluted. Eggs laid inside ovisac. Males uncommon. Occurring primarily on the leaves and stems of the host.
Icerya purchasi is very similar to I. koebelei by having 2 pairs of abdominal spiracles; 3 cicatices near vulva; and open center pores. Icerya purchasi differs by normally having 11-segmented antennae (those on I. koebelei are usually 10-segmented). They may be synonyms.
U.S. quarantine notes
This species was intercepted 160 times on a variety of hosts at U. S. ports-of-entry between 1995 and 2012, with specimens originating from Australia, Caribbean (Antigua and Barbuda, Barbados, Dominican Republic, Haiti, Jamaica, The U.S. Virgin Islands), Cape Verde, Colombia, Cook Islands, Costa Rica, Ethiopia, Eritrea, France, Greece, Guatemala, Hawaii, India, Italy, Israel, Japan, Mexico, Morocco, The Netherlands, New Zealand, Palestinian Territory, Peru, Puerto Rico, South Africa, South Korea, and Turkey. Since 1970, we also have examined specimens taken in quarantine from Antigua (Citrus); Australia (Leucadendron); Azores (Mentha); Bahamas (Bouganvillea, Casuarina, Citrus); Barbados (Citrus, Medicago); Bermuda (Jatropha); Brazil (Citrus); China (Michelia); Costa Rica (Epipremnum); Dominican Republic (Aralia, Chlorophytum, Citrus, Gossypium, Melicoccus, Rosa, Rosmarinus); Ecuador (Citrus); France (Cassia, Mimosa); Greece (Rosmarinus); Guam (Tristiropsis); Guatemala (Chamaedorea); Haiti (Citrus); Israel (Banksia, Pittosporum); Italy (Aralia, Citrus, Morus, Pittosporum, Rosmarinus); Jamaica (Acaltha, Aralia, Bidens, Citrus, Mentha, Thymus); Japan (Citrus); Jordan (Vitis); Mexico (Artemisia, Citrus, Hedera, Philadelphus, Rosa, Rosmarinus, Schinus); Monaco (Amaranthaceae); The Netherlands (unknown plant); New Zealand (Erica); The Philippines (Fortunella, Pittosporum); Puerto Rico (Annona, Citrus); South Africa (Cussonia, Leucospermum); Taiwan (Citrus). ScaleNet includes hosts in more than 40 plant families from all 7 zoogeographic regions. No other species of Icerya have been taken in quarantine at U. S. ports-of-entry other than I. aegyptiaca (Douglas), I. pulchra (Leonardi), I. purchasi, I. samaraia (Morrison) and I. seychellarum (Westwood).