This species was intercepted at U. S. ports-of-entry 10 times between 1995 and 2012, with specimens originating from the African countries of Ghana, Nigeria, Senegal and Sierra Leone. We also have examined specimens taken in quarantine from Ivory Coast (Theobroma); Nigeria (Theobroma); Sierra Leone (Treculia). ScaleNet lists hosts in 36 plant families. It is commonly collected on cocoa. Formicococcus njalensis occurs in the Afrotropical zoogeographic region only. Three species of Formicococcus besides F. njalensis, F. polysperes Williams and F. robustus (Ezzat & McConnell) have been taken at U. S. ports-of-entry including: F. acerneus Williams (India, on Mangifera); F. erythrinae Williams (India, on Mangifera); and F. mangiferacola Williams (India, on mango).