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1. any of various butterflies of the genus Papilio and related genera, esp P. machaon of Europe, having a tail-like extension of each hind wing: family Papilionidae
2. the forked tail of a swallow or similar bird



(Papilio machaon) a butterfly of the family Papilionidae. The swallowtail is yellow with black markings. Its wingspread reaches 9 cm. It is found in Europe and the temperate regions of Asia and northern Africa, emerging at the beginning of summer and, in southern regions, at the end of summer (the second generation). It winters in the pupal stage. The caterpillar is green with black cross stripes and orange-yellow spots. It develops on plants of the families Umbelliferae and Rutaceae. It feeds on carrots, but damage is usually insignificant.

References in periodicals archive ?
Larval growth and survivorship of the Black Swallowtail butterfly in central New York.
To do so, allow a corner of your backyard to naturalize with wild grasses, weeds and wildflowers (including Queen Anne's lace, thistle, burdock, borage, milkweed, evening primrose), and plant extra dill, parsley and carrots, which swallowtail butterfly larvae consume in quantity.
The Schaus swallowtail butterfly has finally had some good luck--after years of hard times.
Fennel is host to the swallowtail butterfly caterpillars and swallowtails are large and beautiful, like flying flowers making the garden even more lovely.
Intersexual comparison of mimetic protection in the black swallowtail butterfly, Papilio polyxenes asterius Stoll.
Mechanisms and consequences of selective oviposition by the zebra swallowtail butterfly.
I wonder if anyone knows all the insect species here, including such rarer beauties as the luna and emperor moths and the zebra swallowtail butterfly.
When the parsleyworm grows up, it turns into a black swallowtail butterfly.
Damstras reverse design depicts a Tiger Swallowtail butterfly in flight, a symbol of hope.
The Eastern black swallowtail butterfly will lay eggs on parsley, fennel, and dill.
The environmental and genetic control of seasonal polyphenism in larval color and its adaptive significance in a swallowtail butterfly.
Washington, May 20 (ANI): A group of Japanese researchers has succeeded in building a fully functional replica model - an ornithopter - of a swallowtail butterfly, and they have filmed it flying.