| Tagosodes pusanus (Distant) is one of the planthopper species, which has been reported as a minor insect pest in Thailand in 2000. The morphology of T. pusanus closely resembles the whitebacked planthopper, Sogatella furcifera (Horvath). However, it could be distinguished by the pattern of the dark markers of its forewings, pale yellow pronotum in the middle of the segment, color of the clypeus, and shapes and number of spines of aedeagus. The population dynamic of T. pusanus was studied by sampling in the rice fields using D-vac and Blower-vac sucking machines. The results showed that the number of T. pusanus was higher than S. furcifera at heading stages of the rice plants in Nakhon Nayok province in 2011. The relationship between the numbers of two... |
