extremely significantp < 0.001
However, the statistical results for the body weight, length and width of the 14 nymphal instars showed that not all adjacent instar pairs had extremely significant differences ( p < 0.001) in these three indicators ( Figure 5 ; Table S2 ), such as between N4 and N5, N5 and N6, N9 and N10, N11 and N12, N12 and N13, N13 and N14, and even N11 and N13.