Host Plants
The Zebra Swallowtail caterpillar feeds only on species within the genus Asimina. Commonly used species include A. angustifolia (Slimleaf Pawpaw), A. incana (Woolly Pawpaw), A. parviflora (Smallflower Pawpaw), A. reticulata (Netted Pawpaw), A. tetramera (Four-petal Pawpaw), and A. triloba (Common Pawpaw). P. marcellus caterpillars ingest chemicals called annonaceous acetogenins from their host plants, which are retained in the body tissues of both the caterpillar and the adult, and may help chemically protect the butterfly from birds.
Read more about this topic: Protographium Marcellus
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