BugGuide (or BugGuide.net) is a website and online community of naturalists, both amateur and professional, who share observations of arthropods such as insects, spiders, and other related creatures.

[1] The website consists of informational guide pages and many thousands of photographs of arthropods from the United States and Canada which are used for identification and research.

BugGuide was conceived by photographer Troy Bartlett in 2003 and since 2006 has been maintained by John VanDyk, an adjunct assistant professor of entomology and a senior systems analyst at Iowa State University.

[4] According to gardening author Margaret Roach, "The site is where naturalists of all levels share photos of 'insects, spiders and their kin' to foster enthusiasm and expand the knowledge base about these often-overlooked (and as BugGuide points out, 'oft-maligned') creatures.

In addition, 12 species new to the Western Hemisphere were first identified via the site; another seven were new to North America; and numerous new country records (primarily the United States) and state/county sightings.