Scanning electron microscopy was used to observe the antennae and sensilla of Locusta migratoria tibetensis Chen. Five types of sensilla were found on antennae: sensilla trichodea, sensilla chaetica, sensilla coeloclnica, sensilla basiconica and sensilla cavity. Describing the morphological characteristics of these sensilla indicates that there was generally little variation in sensilla type, however, gregarious locusts had fewer sensilla than solitary locusts. Nymphs had smaller and fewer sensilla than adults, and nymphs and adults also differed in the distribution of sensilla. L. m. tibetensis had similar types of sensilla to L. m. manilensis (Meyen) but these subspecies differ in the morphological characteristics, quantity and distribution of sensilla, such as differences in distribution of sensilla between nymphs and adults.