Side of curved grub with downward-pointed head, 3 legs, spiracles along body, and fat terminal segments. Below is younger, smaller grub. Black and white art.

Figure 22D–E. Very young white grub (D) and mature white grub (E).

Side of curved grub with downward-pointed head, 3 legs, spiracles along body, and fat terminal segments. Below is younger, smaller grub. Black and white art.

Illustrations by USDA (D) and Ponglerd Kooaroon (E).