 A particularly high species richness exists in Cuba (more than 60 species), Hispaniola (more than 55), Mexico (more than 50), Central America, Colombia (more than 75), and Ecuador (at least 40).Fewer live in eastern and central South America (for example, less than 20 species are known from huge Brazil), Contiguous United States (1 native species), and the Lesser Antilles (about 25 species in total, with 1–2 species on each island).However, the Lesser Antilles are relatively rich compared to their very small land area and their species are all highly localized endemics, each only found on one or a few diminutive islands.