Field characters not reported. Based on characteristics of slide-mounted adult female, with body oval; body covered by white mealy secretion; ovisacventral only or absent entirely; lateral filaments short and thick, surrounding body margin. Present on roots and tubers.
This species was not intercepted at U. S. ports-of-entry between 1995 and 2012, but it was reported by Williams (2004) to have been taken at U. S. ports-of-entry. We also have examined specimens taken in quarantine from The Philippines (Zingiber); Thailand (Zingiber); Vietnam (Lansium). ScaleNet lists the species from 6 families of host plants, and distribution records include countries in the Oriental region only. Three species of Formicococcus besides F. njalensis (Laing), F. polysperes and F. robustus (Ezzat & McConnell) have been taken at U. S. ports-of-entry including: F. acerneus Williams; F. erythrinae Williams (India, on mango); and F. mangiferacola Williams (India, on mango).