Abstract:

Cylas formicarius is an important quarantine pest during the production and storage of sweet potato. The adults eat root tubers, tender buds and tender stems, and the larvae eat sweet potatoes and their thick vines. The damaged sweet potatoes have a fishy smell and can not be eaten. The feeding of Cylas formicarius can cause other diseases, such as soft rot, and cause serious harm to the production of sweet potatoes. In this paper, the morphology and oviposition behavior of Cylas formicarius were photographed and described to provide identification basis, which is beneficial for improving the quarantine, monitoring and pest control abilities of technicians.

Key words: Cylas formicarius, different insect states, morphology, oviposition habit