Widespread distribution. In Oceania, Fiji, French Polynesia, Northern Mariana Islands, Vanuatu. Preys on coconut scale (and other armoured scales, e.g., white peach scale. Eats up to 20 scales a day.
Eggs laid under scale covers (after scale eaten). Larvae yellow, covered in waxy filaments (outgrowths). Adults, nearly round with black wing cases and brown heads.
Said to be effective in Fiji (distributions made throughout country) and Jamaica against coconut scale, but poor results elsewhere. Not certain if still in Fiji.
Biosecurity: need to assess risk before introduction as it is not specific to coconut scale.
Cultural control: hot water to kill ants: 47°C (note, 49°C kills plants).
Management: (i) move adults and larvae to colonies of pests; (ii) use sleeve cages to protect populations initially; (iii) avoid use of organophosphates, carbamates and synthetic pyrethroids; (iv) control ants: (a) stomach poisons (fipronil, Amdro®, borax), (b) growth regulators (methoprene, pyriproxyfen), (c) nerve poisons (bifenthrin, fipronil, imidacloprid). See (http://piat.org.nz/getting-rid-of-ants).