[Objectives]  To achieve the goal of “managing underground pests above ground”, the authors investigated the effectiveness of previously reported scarab attractants on several dominant scarab species in peanut growing areas in Henan province. [Methods]  We compared the effectiveness of 10 candidate attractant blends in Xuchang and Zhumadian, from June 2, 2016 to August 31, 2016. [Results]  Holotrichia parallela was the dominant scarab beetle in two field sites. Trap catches of three blends comprised of H. parallela sex pheromone components [in which ratios of R-(-)-linalool to L- isoleucine methyl ester were 1︰4, 1︰5, and 1︰7, respectively] were significantly higher than those of blank traps, as well as traps with other candidate lures, but there was no significant difference in the numbers of scarab beetles caught among the binary blends of R-(-)-linalool and L-isoleucine methyl ester mixed in different ratios. [Conclusion]  The optimal lure [500 μL of R-(-)-linalool and L-isoleucine methyl ester blended at 1 : 4, then formulated in 0.5% agaropectin] is recommended for use in peanut growing areas where H. parallela is the dominant species and should be applied between 13 June and 23 July.