Giant Swallowtail (Papilio cresphontes)
- Identification tips, ecology, and life history. Provides photos and distribution map.
- http://www.butterfliesandmoths.org/species?l=1366

Zebra Swallowtail (Eurytides marcellus)
- Identification tips, life history, and ecology of this species. Includes photo and range map.
- http://www.butterfliesandmoths.org/species?l=1353

Pink-spotted Swallowtail (Papilio pharnaces)
- Fact sheet describes life history, physical traits, and ecology. Provides a photo and range map.
- http://www.butterfliesandmoths.org/species?l=1383

Ruby-spotted Swallowtail (Papilio anchisiades)
- Fact sheet describes life history, physical traits, and ecology. Provides an image and distribution map.
- http://www.butterfliesandmoths.org/species?l=1384

Canadian Tiger Swallowtail (Papilio canadensis)
- Describes physical characteristics, range, habitat, diet, and ecology of this species. Provides an image.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/fampap/pacaf.htm

Old World Swallowtail (Papilio machaon)
- Discusses physical characteristics, range, habitat, diet, and ecology of this species. Provides photo and references.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/fampap/pamaf.htm

Ornythion Swallowtail (Papilio ornythion)
- Photos of this species taken in Mexico.
- http://www.naba.org/images/papilionidae/papilioninae/papilio_ornythion/papilio_ornythion.html

Spicebush Swallowtail (Papilio troilus)
- Photos of this species taken in Florida and Michigan.
- http://www.vireos.com/spicebushswallowtail.html

Two-Tailed Swallowtail (Papilio multicaudata)
- Physical characteristics, habitat, diet, and ecology. Describes range and includes photo.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/fampap/pamuf.htm

Anise Swallowtail (Papilio zelicaon)
- Image of this species in Windy Hill Open Space Preserve, California.
- http://www.vireos.com/aniseswallowtail.html

Western Tiger Swallowtail (Papilio rutulus)
- Physical traits of caterpillar and adult, range, habitat, and ecology. Includes image.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/fampap/paruf.htm

Pipevine Swallowtail
- Photos of adult of this species and caterpillars in various stages.
- http://www.carolinabutterflysociety.org/baldwin/pipevine01.htm

Indra Swallowtail
- An illustrated guide to geographic variation in this species and its larval host plants, by Dr. Wayne H. Whaley.
- http://research.uvsc.edu/whaley/