Placodea (PLAS), auricilica (AUS), and basiconica (BAS) sensilla types were identified in both surfaces of lamellae of Macrodactylus mexicanus (Burmeister) and Macrodactylus nigripes (Bates), two species of chafer beetles with economic importance in Mexico. Fourteen subtypes of sensilla were identified on the inner and external surfaces of lamellae from both sexes of M. mexicanus and M. nigripes: four PLAS, three AUS, and seven BAS. Distribution of PLAS, BAS, and AUS in the inner surface of the lamellae of both sex of M. mexicanus and M. nigripes was similar in middle and proximal lamellae. PLAS are distributed in the peripheral edges, while BAS and AUS were distributed in the center of the lamellae. The purpose of this study was to compare the sensilla distribution in the antennae of the beetles as a first step to better understand the dynamics of sexual chemical communication in Macrodactylus species.