Webworm threat closely monitored

onset of colder weather, with a few surviving in frost-free sheltered sites over winter. These can reinfest the region in the next summer if the weather conditions are suitably tropical.”

At the moment, TGW could be found at Paparore, Waiharara, Motutangi, around Pukenui and further north at Ngataki.

Dr Dymock says she is keeping a close eye on TGW, monitoring their numbers at a number of Far North sites on a weekly basis and keeping in close contact with affected landowners.

She says given the upsurge in TGW numbers, monitoring results will be posted on the regional council’s website via www.nrc.govt.nz/pestcontrolhub until the onset of cooler weather.

DAMAGE: Entomologist Jenny Dymock checking tropical grass webworm damage at Paparore, roughly 10km north of Kaitaia.

PEST: A tropical grass webworm caterpillar and pupa.