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Biological Control of Giant Reed Weed

Giant Reed Weed scale insectGiant reed (Arundo donax) is a tall (2 to 10 m) and robust bamboo or reed-like perennial grass, now recognised by authoritative biological invasion resources internationally as a serious global threat to riparian ecosystems.

Tetramesa romana (common name: arundo galling wasp) was approved for the control of giant reed (A. donax). The wasp lays its eggs into giant reed stems which induces gall formation.

Rhizaspidiotus donacis (common name: arundo scale insect) was approved for the control of giant reed (A. donax). The scale insect sucks nutrients form stems and rhizomes, reducing the rate at which giant reed grows and spreads.

Read the application for Tetramesa romana and Rhizaspidiotus donacis (pdf, 3.7mb)

Read the decision for Tetramesa romana and Rhizaspidiotus donacis (pdf, 400kb)