Species‐level, but not family‐level diet breadth predicts geographic distribution of Sydney butterflies

Diet specialisation drives life‐history adaptations and is an important factor determining the geographic distribution of species. Previous empirical studies have shown that diet specialists should compose the majority of species in a given location, and theory predicts that generalists should have higher geographic distribution range compared with specialists (the niche breadth‐range size hypothesis). Although the evidence in support of these...