Australia-native
Guides
Acizzia acaciaebaileyanae
Acizzia acaciaebaileyanae is a psyllid species specialized on Acacia baileyana, a widely planted ornamental acacia. Native to Australia, it has spread globally through human transport of its host plant. Despite forming dense populations, it has been observed not to cause visible damage to the host. The species exemplifies inadvertent introduction of specialist herbivores via horticultural trade.
Acizzia uncatoides
Acacia Psyllid
Acizzia uncatoides is a psyllid species native to Australia, primarily associated with Acacia species, especially Acacia melanoxylon, and some Albizia species. It has been introduced to multiple regions worldwide, including La Réunion, where it poses a significant threat to endemic Acacia heterophylla forests. Though capable of reaching high population densities, it is not generally regarded as a major pest species in most of its range. The species serves as prey for generalist psyllid predators and has been targeted for classical biological control programs.
Boreioglycaspis melaleucae
melaleuca psyllid
Boreioglycaspis melaleucae is a psyllid native to Australia, introduced to Florida in 2002 as a classical biological control agent against the invasive tree Melaleuca quinquenervia. It is a phloem-feeding specialist on Melaleuca quinquenervia and has established self-sustaining populations in South Florida. The species produces waxy secretions from specialized integumentary structures and excretes honeydew. Its population dynamics in Florida are influenced by temperature extremes, with development ceasing below 10°C and above 30°C, and it faces parasitism by the adventive encyrtid wasp Psyllaephagus migrator.
Cryptochetum iceryae
cottony cushion scale parasite, cottony cushion scale parasitoid
Cryptochetum iceryae is a parasitic fly in the family Cryptochetidae, native to Australia. It was deliberately introduced to California in the 1880s as a biological control agent against the cottony cushion scale (Icerya purchasi), a major pest of citrus crops. The species has since been introduced to Israel and South America for similar purposes. In 2019, it was discovered in the United Kingdom for the first time, identified in the wildlife garden at the Natural History Museum in London.
biological-controlparasitoidagricultural-pest-managementDipteraCryptochetidaeclassical-biological-controlcitrus-pestinvasive-species-managementAustralia-native1880s-introductionCaliforniaIsraelSouth-AmericaUnited-Kingdom-2019-discoveryNatural-History-Museum-Londonscale-insect-parasiteendoparasitoidIcerya-purchasicottony-cushion-scalesuccessful-biocontrolintegrated-pest-managementvedalia-beetle-complementWilliston-1888Lestophonus-iceryaeEpiphyas postvittana
light brown apple moth, LBAM, apple leaf roller
Epiphyas postvittana, the light brown apple moth, is a highly polyphagous tortricid moth native to Australia. It has become an invasive agricultural pest in multiple countries including New Zealand, Hawaii, the United Kingdom, and California, where it was first detected in 2006. The species feeds on over 250 plant species across numerous families, with larvae causing damage as leafrolling caterpillars. Its broad host range and high reproductive potential make it a significant threat to horticultural industries worldwide.
Leptocybe
blue gum chalcid wasp, eucalyptus gall wasp
Leptocybe is a monotypic genus of gall wasps in the family Eulophidae, containing the single species L. invasa. Native to Queensland, Australia, this genus has become globally significant as an invasive pest of Eucalyptus plantations. The wasp induces spherical galls on leaf buds and young tissues of multiple Eucalyptus species, causing substantial economic damage to forestry operations worldwide. The genus is characterized by extremely small body size, thelytokous parthenogenetic reproduction, and rapid population expansion in introduced ranges.
Phoracantha semipunctata
Australian Eucalyptus longhorn, Common Eucalyptus Longhorn, eucalyptus longhorned borer, firewood beetle
Phoracantha semipunctata is a wood-boring beetle in the family Cerambycidae, native to Australia and invasive in many regions where Eucalyptus has been introduced. Adults are crepuscular, active during warmer evening hours when temperatures exceed 15°C. Females lay eggs under loose bark or in bark crevices of stressed or freshly cut Eucalyptus trees; larvae bore into phloem and sapwood, potentially girdling and killing trees. The species is a significant pest in plantations outside Australia, though outbreaks in its native range are associated with drought-stressed trees.
Rhyzobius forestieri
Forestier's lady beetle
Rhyzobius forestieri is a small lady beetle native to Australia, introduced to Europe and North America in the 1980s as a biological control agent for scale insects. The species has been evaluated for its efficacy in controlling Olive Scale (Saissetia oleae) and other scale pests, with variable success reported in different regions. It exhibits colour variation and wax production across all life stages, and displays specialized defensive and feeding behaviours. The species is now established in multiple continents outside its native range.