''Aphelinus asychis'' is a parasitoid wasp native to Eurasia that was introduced to

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

to control the

Russian wheat aphid The Russian wheat aphid (''Diuraphis noxia'') is an aphid that can cause significant losses in cereal crops. The species was introduced to the United States in 1986 and is considered an invasive species there. This aphid is pale green and up to 2 ...

. It has six different aphid hosts, including ''

Acyrthosiphon pisum ''Acyrthosiphon pisum'', commonly known as the pea aphid (and colloquially known as the green dolphin, pea louse, and clover louse), is a sap-sucking insect in the family Aphididae. It feeds on several species of legumes (plant family Fabaceae) ...

''. Recent work shows that the species as currently described does not form a monophyletic group and its taxonomy and phylogenetic relationship should be re-examined.

References

Aphelinidae Insects described in 1839 Biological pest control wasps {{Chalcidoidea-stub