Falcate Orangetip (Anthocharis midea)
- Identification, life history, caterpillar hosts, adult food, and habitat. Includes photo and distribution map.
- http://www.butterfliesandmoths.org/species?l=1416

West Virginia White (Pieris virginiensis)
- Physical traits, life history, diet, habitat, and range. Includes image and distribution map.
- http://www.butterfliesandmoths.org/species?l=1397

Mustard white (Pieris oleracea)
- Photo, identifying traits, life history, range, host plants, and flight period.
- http://www.virtualmuseum.ca/Exhibitions/Butterflies/english/gallery/on_species/cmn_79_mustard_white_phall.html

Delias of the World
- A complete list, photos, and geographical distribution of these Pierine butterflies.
- http://www.delias-butterflies.co.uk/

Checkered White (Pontia protodice)
- Photo, description, range, habitat, diet, ecology, and reproduction.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/fampier/poprf.htm

Western White (Pontia occidentalis)
- Photos of this species plus brief description of range and habitat.
- http://www.turtlepuddle.org/alaskan/butterfly20.html