BUGGUIDE.NET – BugGuide.Net is an online resource devoted to North American insects, spiders and their kin, offering identification, images, and life history information.

MONARCHWATCH.ORG – Monarch Watch is a nonprofit organization dedicated to the study of the Monarch butterfly (Danaus plexippus) and its habitat and migration, and education and engagement of the public for Monarch conservation.

NABA.ORG – The North American Butterfly Association (NABA) is a nonprofit organization working to increase public enjoyment and conservation of butterflies in North America, by promoting butterfly gardening, observation, photography and citizen science projects.

XERCES.ORG – The Xerces Society for Invertebrate Conservation is an international nonprofit organization that protects the natural world through the conservation of invertebrates and their habitats.