Trichilogaster acaciaelongifoliae

Trichilogaster acaciaelongifoliae
Young galls of T. acaciaelongifoliae, still showing abortive flower rudiments.
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Superfamily:	Chalcidoidea
Family:	Pteromalidae
Subfamily:	Ormocerinae
Genus:	Trichilogaster
Species:	T. acaciaelongifoliae
Binomial name
Trichilogaster acaciaelongifoliae (Froggatt, 1892)

Trichilogaster acaciaelongifoliae is a species of Australian chalcid wasps that parasitises, among others, Acacia longifolia (long-leaved wattle, or Sydney golden wattle), which has become an invasive pest in several countries. T. acaciaelongifoliae has been introduced into South Africa as a generally successful biological control agent of A. longifolia.

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Wikipedia