Voltinism change of <italic>Hyphantria cunea</italic> in Shenyang city

To explore the annual life history changes of Hyphantria cunea under climate change, the annual life history and generation development period in Shenyang city were systematically investigated by field survey and indoor observation. The results showed that with the global warming, the third generation of H. cunea were relatively common in Shenyang city in 2024, and the mature larvae were observed and pupated. The results can provide reference for the monitoring, forecasting and control of H. cunea.