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Butterfly (Sulfur)

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Phoebis sennae
Butterfly (Sulfur)


They are found in Alaska, central and southeastern Canada, south through much of the U.S. and into Northern Mexico.


They live in pastures, fields and meadows.

Body Traits

They are light yellow with wide black wing edges. Females have yellow spots in the black border. Underneath, they are greenish-yellow. They have a wingspan of up to 2.5".


Males fly around quickly looking for females.


The caterpillar feeds on clover.

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The females lay one egg on a clover leaf. When the caterpillar hatches, it will start eating leaves.

Butterfly (Sulfur)


Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order:  Lepidoptera
Family: Pieridae
Genus: Phoebis
Species: P. sennae

Citing Research References

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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 >.

Here is an example of citing this page:

Amsel, Sheri. "Butterfly (Sulfur)" Exploring Nature Educational Resource ©2005-2023. January 31, 2023
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