In the Chicago area, these large swallowtails are first seen in April and early May. A second generation begins emerging from chrysalides in mid-June and a third generation may emerge in August or September. Black Swallowtails are attracted to butterfly gardens with fennel or dill plants.
Their range extends from southern Canada to northern Mexico. They are found in Arizona, New Mexico, and the eastern half of the United States. Black Swallowtails over-winter in the chrysalis stage.

Black Swallowtail Caterpillars eat Golden Alexanders(above), Wild Carrots,
Celery, Parsley and Dill.
Black Swallowtails like sunny places with weeds and flowers, and can be found in gardens, vacant lots, old fields, pastures and marshes. They thrive in cities and suburbs due to the abdundance of Queen Anne's Lace.
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Black Swallowtail Butterfly
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Black Swallowtail Chrysalis
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Black Swallowtail Caterpillar
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