Multiple outlets discuss research on tropical butterflies—especially Heliconius species—that can live far longer than typical butterflies. The Conversation notes that these butterflies feed on pollen rich in proteins and suggests this diet may be linked to slower aging. Phys.org likewise highlights that certain tropical butterflies show unexpectedly long lifespans and asks whether their unusually high-protein intake plays a role. Across the coverage, the central idea is that longevity in these insects may be associated with dietary composition, particularly the protein content of the pollen they consume. The articles frame the question as ongoing scientific investigation rather than a definitive conclusion, pointing to the possibility that nutrition could influence health and aging. While the sources emphasize the striking longevity and the high-protein pollen diet, they do not present a single, universally accepted explanation in the provided excerpts. Overall, the reporting focuses on the relationship between diet and longevity in tropical butterflies, with Heliconius butterflies highlighted as a key group for further study.