Beetles-to-be are the immature stages of beetles, which are known as grubs (5 letters) and LARVAE (6 letters). They are the first stage in the life cycle of a beetle, and they look very different from adult beetles. Grubs are usually white or yellowish in color and have a curved body shape, while LARVAE are usually longer and thinner. Both grubs and LARVAE feed on plant material and other organic matter, and they eventually develop into adult beetles.