[Objective] The study aimed to explore the occurrence conditions of Tegra novaehollandiae viridinotata on chestnut.[Method] Life history was observed by the combination of indoor-rearing and field observation,as well as the relationship between occurrence and surroundings in field.[Result] T.novaehollandiae viridinotata has one generation each year in Yunhe County,Zhejiang Province,and overwinters by laying eggs in chestnut trunk with diameter of 5.0 cm.Adults and the nymphs feed on Glochidion puberum leaves,adults damage trunks of young chestnut by oviposition.Nymphs hatch in early April,adults moult in last June and lay eggs in middle July.[Conclusion] T.novaehollandiae viridinotata could be controlled by eliminating shrubs such asGlochidion puberum.,cutting the eggs in dormancy by an knife,spraying pesticides in middle April or June and July,coating stem in winter etc.
