The insecticides susceptibility of adults of the water strider, Gerris lati
abdominis, was studied. The water strider is quite susceptible to insectici
des and the LD50 values of organophosphates, carbamates, pyrethroids, nerei
stoxins, and neonicotinoids ranged from 0.24 to 31.6 mu g/g. The LD50 value
s for fenitrothion, BPMC and PHC were low compared to those for several Hem
ipteran insect pests of rice paddy.