Figure 3.

The lesser chestnut weevil (C. sayi) lifecycle. (A) C. sayi adult females lay eggs in chestnuts (depicted in their burrs). (B) C. sayi larvae feed inside the nut and, when they reach their last instar, create a hole and emerge from the chestnut. (C) C. sayi larvae emerge out of the holes and fall to the ground, where they burrow to about 5 cm below the soil line. (D) C. sayi pupate in the soil (extracted pupae depicted). (E) C. sayi pupae then eclose. Males (above with shorter rostrum) and females (below with longer rostrum) then emerge from the soil to continue the lifecycle.