Harlequin ladybird
Harmonia axyridis
Status:
Established
Habitat:
Terrestrial
Threats:
Alert: Specimen found in Ireland.
Himalayan balsam
Impatiens glandulifera
Status:
Established
Habitat:
Terrestrial
Threats:
Competition with native plants & collapsing of river banks
Hottentot fig
Carpobrotus edulis
Status:
Established
Habitat:
Terrestrial
Threats:
Changes to dune environments.
Japanese arrowroot
Pueraria montana var. lobata
Status:
Potential
Habitat:
Terrestrial
Threats:
Competition with native species.
Japanese knotweed
Fallopia japonica
Status:
Established
Habitat:
Terrestrial
Threats:
Reduction of species diversity.
Muntjac Deer
Muntiacus reevesi
Status:
Established
Habitat:
Terrestrial
Threats:
Preventing seed regeneration of important conservation species.
New Zealand flatworm
Arthurdendyus triangulatus
Status:
Established
Habitat:
Terrestrial
Threats:
Significant reduction of native earthworms.
New Zealand pigmyweed
Crassula helmsii
Status:
Established
Habitat:
Freshwater
Threats:
Competition with native species.
North American Signal Crayfish
Pacifastacus leniusculus
Status:
Potential
Habitat:
Freshwater
Threats:
Detrimental impacts on white clawed crayfish. Human health impacts.
Invasive Species Ireland

Invasive Species Ireland