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. 2020 Jun 30;11(7):407. doi: 10.3390/insects11070407

Table 1.

Classification of red palm weevil (RPW) infestation level in E. guineensis plantlings.

Level Figure 1 Descriptions
1 (Early stage) A, B
  • No visual symptoms

2 (Intermediate I) C, D
  • Dark sap visible

  • Tissue fibre protrusion and sawdust presence

3 (Intermediate II) E, F, G
  • Initial signs of frond collapse

4 (Final stage) H, I
  • Collapsed frond turned brown