Biological Properties of Perina nuda in Fuzhou

Egg mass of Perina nuda was collected on January 3rd, 2016 in Fuzhou Botanical Garden, Fujian province. Observations were carried out on morphology and biological properties in by artificial feeding at lab as well in the wild. The results show that P nuda had 6-7 generations in a year in Fuzhou with overlap and no evident overwinter. The 1st generation occurred in April at room temperatures. It took normally about 45 days for one generation at 25-37℃, 115 days for overwintering generation. One femal moth layed 32 to 343 eggs. Larva had 6 instars, with two morphological forms. It occurred commonly from May to November.