Western Tiger Swallowtail

Range: Western United Stages
Average size: 3-4  inch wingspan
​Primary food: Flying insects

Arundo donax is not a good food source for most insects. Nesting birds rely on flying insects, caterpillars, etc as food for their young. Large stands of arundo displace the willows and other trees that support butterflies like the Western tiger swallowtail, which, in turn, has an impact on the species that feed on them.