[Aim] Strepsicrates coriariae is an important pest of forest and fruit trees such as eucalyptus and guava as a first step to study the role of the antennal sensillae of S. coriariae in locating suitable habitats and reacting to external stimuli, we aimed to describe the ultrastructure of antennal sensillae. [Method] The type, number and distribution of antennal sensillia were observed and studied by scanning electron microscopy (SEM). [Result] The antenna of S. coriariae was made of scape, pedicel and flagella and the outside lateral surface of antenna was covered with catapylla. There was no significant difference between females and males in the shape of the antenna, but the antenna of male S. coriariae was shorter than that of female and there was a cave near the top quarter of the flagellum. Seven distinct types of receptors were found, including sensilla squamiformia (Q), sensilla trichodea (ST), sensilla basiconica (SB), sensilla coeloconica (SC), sensilla auricillica (SAu), sensilla chaetica (SCh) and Böhm hairs. The sensilla trichodea was the most numerous among these antennal sensilliao. [Conclusion] The distribution of antennal sensilla presented regularly to some extent, but there were also some differences between females and males in the number, type, distribution and characteristics of antennal sensilla. It is suggested that GC-EAD and EGA technology should be applied to further analyze the function of the antennal sensillae in S. coriariae.