【目的】 对谷斑皮蠹Trogoderma granarium和花斑皮蠹Trogoderma variabile成、幼虫取食花生和玉米的声音进行参数分析，以通过声学方法实现2种皮蠹种类和虫态的鉴定。【方法】 采用声学软件Cool Edit PRO对2种皮蠹成、幼虫取食花生和玉米的声音进行时频域分析，统计时频域上的特征声音参数虫声峰值、脉冲数及频率峰值并进行统计分析。【结果】 取食花生时的声音参数分析，成虫对比：谷斑皮蠹与花斑皮蠹成虫在虫声峰值上存在显著差异（P<0.05）。幼虫对比：谷斑皮蠹与花斑皮蠹幼虫在脉冲数上存在显著差异（P<0.05）。成虫与幼虫对比：谷斑皮蠹和花斑皮蠹的成虫与其幼虫之间在虫声峰值和脉冲数上均表现出显著差异（P<0.05）。取食玉米时的声音参数分析，成虫对比：谷斑皮蠹与花斑皮蠹成虫在虫声峰值和频率峰值上存在显著差异（P<0.05）。幼虫对比：谷斑皮蠹与花斑皮蠹幼虫在脉冲数上存在显著差异（P<0.05）。成虫与幼虫对比：谷斑皮蠹和花斑皮蠹的成虫与其幼虫在虫声峰值和脉冲数上存在显著差异（P<0.05）。【结论】 在2种皮蠹取食花生的声音中，谷斑皮蠹成虫的虫声峰值[(﹣11.33± 0.69) dB]>花斑皮蠹成虫[(﹣13.37±1.06) dB]，谷斑皮蠹幼虫的脉冲数[(21.40±3.37)个]<花斑皮蠹幼虫[(27.40±1.63)个]，谷斑皮蠹成虫的虫声峰值和脉冲数[(5.60±0.60)个]<幼虫的虫声峰值[(﹣6.85±0.51) dB]和脉冲数，花斑皮蠹成虫的虫声峰值和脉冲数[(2.20±0.59)个]<幼虫的虫声峰值[(﹣4.96±0.39) dB]和脉冲数，说明通过虫声峰值或脉冲数可以区分2种皮蠹的种类和虫态。在取食玉米的声音中，谷斑皮蠹成虫的虫声峰值[(﹣23.44±1.80) dB]和频率峰值[(4451.50±165.34) Hz]<花斑皮蠹成虫的虫声峰值[(﹣18.02± 0.70) dB]和频率峰值[(4857.50±176.36) Hz]，谷斑皮蠹幼虫的脉冲数[(16.20±1.16)个]<花斑皮蠹幼虫[(23.60±2.41)个]，谷斑皮蠹成虫的虫声峰值和脉冲数[(1.75±0.19)个]<幼虫的虫声峰值[(﹣7.68±0.65) dB]和脉冲数，花斑皮蠹成虫的虫声峰值和脉冲数[(1.60±0.65)个]<幼虫的虫声峰值[(﹣7.24±0.66) dB]和脉冲数，说明通过虫声峰值和脉冲数可以区分2种皮蠹的种类和虫态，通过频率峰值可以完成2种皮蠹成虫种类的区分。

[Aim]  The bioacoustic parameters of adults and larvae of Trogoderma granarium and Trogoderma variabile feeding on peanuts and corn were analyzed to develop a way of using acoustic methods to identify the species and developmental stage of these pests in bulk stored peanuts and corn. [Methods]  The acoustic software Cool Edit PRO was used to perform time-frequency domain analysis on the sounds produced by adults and larvae of two species while feeding on peanuts and corn. Statistical analysis was performed on characteristic acoustic parameters of insect sounds in the time-frequency domain, including the peak sounds, number of pulses, and the peak frequencies, to determine key identifying features. [Results]  There were significant differences in the peak sounds of adult of T. granarium and T. variabile (P<0.05). Significant differences in the number of pulses produced by the larvae of T. granarium and T. variabile (P<0.05). Significant differences between adults and larvae in sound peak and number of pulses (P<0.05). When feeding on corn, there were significant differences in the peak sounds and peak frequencies of adult of T. granarium and T. variabile (P<0.05). Significant differences in the number of pulses produced by the larvae of T. granarium and T. variabile (P<0.05). Significant differences between adults and larvae in peak sounds and number of pulses (P<0.05). [Conclusion]  In the sounds of the two Trogoderm feeding on peanut, The peak sounds of adult T. granarium[(﹣11.33±0.69) dB]>T. variabile adult[(﹣13.37±1.06) dB]. The number of pulses of T. granarium larvae (21.40±3.37)<T. variabile larvae (27.40±1.63). The peak sounds and number of pulses (5.60±0.60) of adult T. granarium<the peak sounds[(﹣6.85±0.51) dB] and number of pulses of larvae. The peak sounds and number of pulses[2.20±0.59] of adult T. variabile<the peak sounds[(﹣4.96±0.39) dB] and number of pulses of larvae. This indicates that the species and stages of the two Trogoderm can be distinguished by peak sounds or number of pulses. In the two Trogoderm feeding on corn, the peak sounds[(﹣23.44±1.80) dB] and frequency peak[(4 451.50±165.34) Hz] of adult T. granarium<the peak asounds[(﹣18.02±0.70) dB] and frequency peak [(4 857.50±176.36) Hz] of adult T. variabile. The number of pulses of T. granarium larvae (16.20±1.16)<T. variabile larvae (23.60±2.41). The peak sounds and number of pulses[(1.75±0.19)] of adult T. granarium<the peak sounds[(﹣7.68±0.65) dB] and number of pulses of larvae. The peak sounds and number of pulses (1.60±0.65) of adult T. variabile<the peak sounds [(﹣7.24±0.66) dB] and number of pulses of larvae. This indicates that the species and stages of the two Trogoderm can be distinguished by peak sounds and number of pulses, and the species of the two adult Trogoderm can be distinguished by frequency peak.