Side view of nine various larvae, some slender, some fat. Curved bodies. Smallest, called the triungulin, is in upper left corner. K and L are legless.

Figure 13D–L. Typical stages of larval blister beetles that develop through nine instars. The first instar (D) is the triungulin.

Side view of nine various larvae, some slender, some fat. Curved bodies. Smallest, called the triungulin, is in upper left corner. K and L are legless.

Illustrations by USDA.