Russian Wheat Aphid in Tasmania (January 2017)
Russian wheat aphid, a serious insect pest of wheat, barley and some other cereal crops has been detected near Cressy in Tasmania.
It was first detected in Australia on 13 May 2016 in South Australia and then spread
rapidly to Victoria and New South Wales. The National Management Group
determined it was not technically feasible to eradicate the aphid for several
reasons, including its wide distribution soon after detection. It most likely spread to Tasmania on northerly airflows.
Russian wheat aphid, Diuraphis noxia, is a small green aphid whose
feeding produces strong plant symptoms due to the injection of saliva into the
plant. These symptoms include rolled leaves, chlorotic spots, leaf streaking, trapped awns
giving a hooked appearance and stunted crop.
What to do if you think you have found Russian Wheat Aphid
Plant Diagnostic Services in Biosecurity Tasmania will identify
aphids suspected of being Russian wheat aphid free of charge. Specimens or images can be submitted to a DPIPWE entomologist by calling 1300 368 550. Samples of plants bearing aphids should be secured in sealed double plastic
bags along with some absorbent paper towel.