Many have beautiful or strange color patterns. The giant swallowtail caterpillar has a smeary black and white pattern, and ...

Yes! The caterpillar most frequently found on parsley, dill, fennel, and related plants are the larval forms of the black swallowtail (Papilio polyxenes) butterfly. This species, sometimes known ...

Black and white stripes combined with a knobbly body make the caterpillar look remarkably like bird droppings. This unappetising outfit is a clever ploy to hide in plain sight, a trick used by ...

Just as monarchs famously prefer milkweed for food and egg-laying, swallowtail butterflies also have a preferred food as ...

Swallowtail distribution is wholly dictated by the availability of milk parsley, its caterpillar food source. When the Norfolk Broads were actively managed by reedcutters who harvested both reed ...