Body oval or pentagonal; convex in lateral view; body brown; with a thick wax covering; eggs laid in chamber under body of adult; ovisac absent. The following description is from Gimpel et al. (1974). Test: Wet wax pentagonal in dorsal view, hemispherical laterally, without horn, pink to reddish brown, with marginal flange, not hiding lateral filaments, without plates and nuclei. Dry wax with filaments as follows: Cephalic filament simple, apically acute; anterolateral and posterolateral filaments simple; mediolateral filaments apparently absent; caudal filaments simple; dorsal dry wax of first and second instars apparently absent, indicated only by small depression in wet wax. Stigmatic wax bands present near both spiracles, anterior band directed forward, nearly touching anteriorly, filamentous wax confined to stigmatic areas. On stems, twigs, and leaves; apparently preferring upper surfaces of leaves.
Ceroplastes rubens is the only Ceroplastes species that has reduced legs and tubular ducts that are absent from the venter and abundant over the dorsum. It is easily distinguished in the field by having the front spiracular wax bands curved forward almost touching each other anteriorly.
U.S. quarantine notes
This species was intercepted 2,321 times on a variety of hosts at U. S. ports-of-entry between 1995 and 2012, with specimens originating from American Samoa, Antigua and Barbuda, Australia, Barbados, China, Christmas Island, Cook Islands, Costa Rica, Dominica, Dominican Republic, Ecuador, Fiji, French Polynesia, Grenada, Guam, Hawaii, Hong Kong, India, Indonesia, Jamaica, Martinique, New Caledonia, The Philippines, Puerto Rico, Samoa, South Africa, South Korea, St. Maarten, St. Lucia, Tahiti, Thailand, Tonga, Trinidad and Tobago, The U.S. Virgin Islands, and Venezuela. We also have examined specimens taken in quarantine from American Samoa (Alyxia); Australia (Gardenia, Loranthus, Phaius); China (Litchi); Cook Islands (Alyxia); Dominica (Anthurium); Guam (fern); Hawaii (Alpinia, Alyxia); India (unknown leaf); Indonesia (Citrus, Mangifera); Jamaica (Aglaonema, Alpinia, Anthurium, Cinnamomum, Ixora, Mangifera, Polypodium, Zingiber); Japan (Azalea, Buxus, Camellia, Citrus, Diospyros, Euonymus, Eurya, Fatsia, Gardenia, Ilex, Magnolia, Malus, Pinus, Pittosporum, Prunus); Korea (unknown host); Pakistan (unknown host); The Philippines (Cycas, Laurus); St. John (Pimenta); St. Lucia (Anthurium); Saipan (Barringtonia, Mangifera); Tahiti (Gardenia, Polypodium); Taiwan (Camellia, Cephalotaxus); Thailand (Citrus, Cycas, Garcinia); Trinidad (Dieffenbachia, Laurus); and Venezuela (Aglaonema). ScaleNet includes hosts in over 80 families and lists locality information from all zoogeographic regions. One species of Ceroplastes other than C. ceriferus (Fabricius), C. cirripediformis Comstock, C. floridensis Comstock, C. japonicus Green, C. rubens, C. rusci (Linneaus), C. sinensis Del Guercio and C. stellifer (Westwood) has been intercepted at a U. S. port-of-entry, C. cistudiformis Cockerell (Mexico, on Punica).