Beetle larva can be referred to by many different names, depending on the stage of development. The first stage is known as a GRUB, which is a four-letter word. Grubs are white, C-shaped larvae that feed on plant roots and organic matter. The second stage is known as a PUPA, which is also a four-letter word. Pupae are immobile and encased in a protective cocoon. The third stage is known as a TADPOLE, which is a seven-letter word. Tadpoles are aquatic larvae with gills and a tail. The fourth stage is known as a NYMPH, which is a five-letter word. Nymphs are wingless, immature insects that look similar to adults. The fifth and final stage is known as a MAGGOT, which is a six-letter word. Maggots are legless larvae that feed on decaying organic matter.