http://www.eje.cz plant growth correlated with the sticky "honeydew" covering the plant. Melanaphis sacchari transmits the sugarcane yellow leaf virus causing a 25% reduction in sugarcane yields (Akbar et al., 2010). Control of M. sacchari is diffi cult as pesticides cannot penetrate the greater canopy of sorghum. Pre-and post-harvest restrictions exacerbate the challenge of pesticide use (Armstrong et al., 2016). Melanaphis sacchari cannot destroy sorghum in a short term period, but the large populations growing out of control lead to the chlorosis correlated with damage of plant tissues because of the rapid aphid reproduction (Colares et al., 2015). Melanaphis sacchari can continue injuring the plants at grain-fi lling stage and affecting their seeds both in quality and quantity (Chang & Fang, 1984; van den Berg et al., 2003). Moreover, if the M. sacchari colony has the characteristic of thermal tolerance, it could contribute signifi cantly to its pest status under hot summer conditions