Casmara patrona is one of the main borer pests damaging Camellia oleifera in China. Few reports about this insect were published. The life history, biological characteristics and natural enemies of C. patrona were investigated through field survey and laboratory observation in this study. The results showed that C. patrona had one generation in one year or two years, and overwintered as 3rd-5th instar larva in Zhejiang Province. About 88 percent of larvae began to pupate in early May, and the rest kept feeding till the next year. The adults could be observed from early June to early July, and the peak of emergence occurred in late June. The adults began to oviposit in late June and terminated in early July. The eggs started hatching in early July, and then the larvae bored into the branch to feed. The entrance holes of the larvae distributed predominately in the middle of the eastern and southern part of C. oleifera tree. The larva had five instars, and there were 10-50 days when the larva did not feed between consecutive instars.
Comparison and analyzation of female sex pheromone that had been identified in Noctuidae suggested thatthe sex pheromones were composed by five types of components: esters, alcohols, aldehydes, hydrocarbons andepoxides. These chemicals had simp ly structure. Overlapp ing components exist in separate subfamilies, and withthe increasing in the number of subfamily which contented sharing components, the species of insects whose sexpheromone content overlapp ing components increased. Sex pheromone components were highly similar amongspecies in the same genus and largely sharing among different genera in the same subfamily. Sex pheromonecomponentswere full homology among the species in the same genera.