It is morphologically very similar to another apple maggot parasitoid, Diachasma alloeum.
Amitus hesperidum is another citrus blackfly parasitoid that has been used alongside E. perplexa to control the pest.
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Encarsia perplexa is a tiny parasitic wasp, a parasitoid of the citrus blackfly, Aleurocanthus woglumi, which is a global pest of citrus trees.
Control of F. auricularia has been attempted using some of its natural enemies, including the parasitoid fly Bigonicheta spinipenni, the fungi Erynia forficulae and Metarhizium anisopliae, as well as many species of birds.
On the island of Kauai, females of a species of parasitoid fly, Ormia ochracea, respond to the stridulation mating calls of male field crickets (Teleogryllus oceanicus) by locating the crickets and then laying their lethal larvae on them.
As part of the campaign against the emerald ash borer Elliot Elsley (EAB), American scientists in conjunction with the Chinese Academy of Forestry searched since 2003 for its natural enemies in the wild leading to the discovery of several parasitoid wasps, including Oobius agrili which is a solitary egg parasitoid of EAB on ash trees in Jilin province in 2004 and has been recorded to kill up to 60 percent of EAB eggs.
A more striking example of the use of polyembryony as a competitive reproductive tool is found in the parasitoid Hymenoptera family Encyrtidae.
The beetle Mordellistena aethiops lives on the plant, its larvae boring into the stems, and it is attacked by parasitoid wasps of the genera Schizopyramnus, Heterospilus, and Tetrastichus.
The Tiphiidae (also known as the tiphiid wasps or, rarely, flower wasps) are a family of large solitary wasps whose larvae are almost universally parasitoids of various beetle larvae, especially those in the superfamily Scarabaeoidea.
The Uzi fly (Exorista sorbillans) is a species of bristly fly in the family Tachinidae that is a parasitoid of caterpillars and is a problem for silkworm rearing in the tropical regions of South and Southeast Asia.