Fourth-instar larva of goldspotted oak borer, Agrilus auroguttatus, just below the surface of the bark of a coast live oak.

Fourth-instar larva (prepupa) of goldspotted oak borer, Agrilus auroguttatus, in a hairpin configuration in a pupal cell found just below the surface of the bark of a coast live oak. Credit: Tom W. Coleman
Credit: Tom W. Coleman