Field characters not recorded. Based on characteristics of slide-mounted adult female, with body oval; legs yellow; body covered by white mealy secretion; ovisacventral only; 17 pairs of thin wax filaments around perimeter of body. Present on stems and leaves of host. Probably oviparous.
This species was intercepted 316 times on a variety of hosts at U. S. ports-of-entry between 1995 and 2012, with specimens originating from Bahamas, Brazil, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Fiji, Grenada, Guatemala, Guyana, Haiti, Honduras, India, Jamaica, Malaysia, Mexico, Peru, Puerto Rico, St. Lucia, Tortola and Trinidad and Tobago. We also have examined specimens taken in quarantine from Bahamas (Anonna, Coccolaba, Cocos, Eleuthra, Musa); Canary Islands (Spain) (banana); Colombia (Alpinia), Cuba (Anonna, Musa, pineapple, plantain); Dominican Republic (Anonna, Artocarpus, Citrus, Melicoccus, Mentha, Persea, Punica); Ecuador (banana); El Salvador (Mangifera); Guatemala (Schefflera); Haiti (orchid, Punica); Jamaica (Anonna, Citrus, Musa); Honduras (Crescentia); Mexico (Aglaeonema, Citrus, Psidium, Zingiber); Spain (banana); Nicaragua (Opuntia); it is most commonly intercepted from tropical or subtropical new world localities on a wide diversity of hosts especially coffee and cocoa. ScaleNet lists the species from more than 20 families of host plants. ScaleNet distribution records for D. grassii include all zoogeographic regions except the Australasian region. Until recently, it was identified as Dysmicoccus alazon Williams, but D. grassii is a much older name. Several species of Dysmicoccus other than D. boninsis (Kuwana), D. brevipes (Cockerell), D. grassii, D.lepelleyi (Betrem), D. mackenziei Beardsley, D. neobrevipes Beardsley, D.orchidum Williams, D. sylvarum Williams & Granara de Willink, D. wistariae Green and Dysmicoccus sp. nr. texensis have been taken in quarantine including: D. amnicola Williams & Watson (The Philippines, on Pandanus); D. finitimus Williams (Taiwan, on Cocos); D. hambletoni Williams and Granara de Willink (Ecuador, on Xanthosoma); D. hypogaeus Williams (Australia, on Chamelaucium and Leucospermum); D. joannesiae Costa Lima (Ecuador, on Inga); D. lansii Williams (The Philippines, on Lansium); D. probrevipes (Morrison)(Central and South America, on Coffea, Cordia, and Triplaris); D. queenslandianus Williams (Australia, on Allocasuarina); and D. viatorius Williams (The Philippines, on Lansium, Nephelium).