[2] It has been introduced to and has established itself in Barbados, Cuba, Jamaica, Mexico, Salvador, Venezuela, the USA (Florida, Texas and Hawaii), Kenya and Oman, for the purpose of controlling citrus blackfly.

The thorax is straw coloured, the wings are transparent with a smoky patch in the centre and the legs are whitish.

[2] This means that introducing the species into a citrus growing area is unlikely to have adverse ecological side effects.

It reproduces rapidly and can produce up to seventy progeny per female and is very successful at controlling heavy infestations.

E. perplexa multiplies more slowly but is better at scouting for outlying blackflies and is more effective when populations of potential hosts are lower.