They are found in southern Canada into the U.S. south to Florida, west to Oklahoma and Texas.
They live in woods, fields, and gardens.
They have dark front wings with yellow spots along the outer edges. The back wings have yellow spots along the outer edges too, but also have a row of blue patches closer to the body from them and a red spot on the inside of each wing. They have a wingspread of up to 2.25" wide.
Caterpillars will hide in rolled up leaves.
The caterpillar feeds on spicebush and sassafras leaves at night (nocturnal).
Females lay one egg on a spicebush leaf. When it hatches, the caterpillar eats the leaves.
Species: P. troilus
When you research information you must cite the reference. Citing for websites is different from citing from books, magazines and periodicals. The style of citing shown here is from the MLA Style Citations (Modern Language Association).
When citing a WEBSITE the general format is as follows.
Author Last Name, First Name(s). "Title: Subtitle of Part of Web Page, if appropriate." Title: Subtitle: Section of Page if appropriate. Sponsoring/Publishing Agency, If Given. Additional significant descriptive information. Date of Electronic Publication or other Date, such as Last Updated. Day Month Year of access < URL >.
Amsel, Sheri. "Butterfly (Spicebush Swallowtail)" Exploring Nature Educational Resource ©2005-2019. July 23, 2019
< http://www.exploringnature.org/db/view/Butterfly-Spicebush-Swallowtail >