This study was carried out to investigate the types of sensilla and their distribution on the antennae of the Asian corn borer, Ostrinia furnacalis (Guen$acute{e}$e). O. furnacalis had six types of antennal sensilla: sensilla trichodea, sensilla chaetica, sensilla coeloconica, sensilla auricillica, sensilla styloconica and Bohms bristle. S. auricillica, single-walled multiporous sensilla, were presumed to be involved in chemical reception. S. coeloconica were double-walled, multiporous sensilla and could detect chemicals also. S. chaetica appeared to be mechano-receptors. S. styloconica were poreless and were thought to have thermo- and hygro-receptors. S.trichodea were single- walled chemosensilla and two subtypes were identified by transmission electron microscopy. The scape and the pedicel had Bohms bristles, which seem to function as mechanical stimulus receptors.