The Black Swallowtail is a common butterfly in Wisconsin. It commonly feeds on many different members of the Parsley family, including parsley, carrots, dill, and parsnip. It may also feed on Common Rue (Ruta graveolens), a domesticated herb.
Weekly sightings for Black Swallowtail
Above: Black, with twin rows of yellowish spots on each wing. These markings are best defined in the male. Below: two rows of orange spots, and a yellow/orange hindwing cell spot, just to the inside of the submarginal band (orange colored in the top photo, this spot may be yellow or whitish).
This species would most likely be confused with the Pipevine Swallowtail, which has only a single row of spots below, and the Spicebush Swallowtail, which has an orange spot on the costa of the hind wing above, and no yellow/orange hindwing cell spot.
Open areas; fields, meadows and parks where its larval hosts are found.
Two broods; early May and then in late July/August with the adults flying throughout August. A third brood may occur in the southern counties (Ebner, 1970).
Common throughout the state.
Early Black Swallowtail Sightings
|Apr 5, 2012||Sauk||Ann Thering|
|Apr 7, 2012||Dane||Dan Sonnenberg|
|Apr 7, 2012||Dane||Sylvia Edlebeck|
|Apr 7, 2012||Iowa||Douglas Buege|
|Apr 14, 2012||Milwaukee||Peter Thornquist|
Muir SNA, Marquette Co., WI. July 31, 1999.
Wautoma, Waushara Co., WI. June 28, 2002.
Jerseys Flats, Northern Kettle Moraine State Forest, Fond du Lac Co., WI. July 14, 2005.
Muir SNA, Marquette Co., WI. July 7, 2005.
Ocracoke Island, Hyde Co., NC. March 26, 2007.