Abstract: Major configurations of the primary sensorium, secondary sensorium, compound eye, rostral hairs, tarsal segment of front leg and abdomen tip of the Russian wheat aphid, Diuraphis noxia (Mordvilko), were investigated under scanning electron microscope. The sensory function of these organs was discussed in relation to their structures.

Key words: Russian wheat aphid (Diuraphis noxia (Mordvilko)), sensory organs, scanning electron microscope