The term "pupal" refers to the stage in an insect's life cycle known as the pupal stage. During this phase, insects undergo significant transformation, transitioning from the larval form to their adult form. This process is part of complete metamorphosis, which is common in insects like butterflies and beetles. In the pupal stage, the insect is typically inactive and may be encased in a protective covering, such as a chrysalis or cocoon. This stage is crucial for development, as the insect's body is reorganized to prepare for its emergence as an adult.