Article by Krewit, J.

Provides photos, classification and specimens.

Provides taxonomy guide.

Article by Randall DJ et. al.

Contains data on distinguishing features of this species.

Article by Brent Courchene. With photos.

Article by Ronnie Garrison. With links to related sites.

Presents distinguishing features.

Discusses characteristics and distribution. With photos.

Provides taxonomy with hyperlinks.

Provides profile and photos of member species. Subscription required.

Discusses relic profile. With photos.

Summary includes order, class, number of genera and species, environment, etymology, reproductive guild, and remarks.

Provides general information, facts and photos.

Discusses identification, reproduction, food, habitat and range, population and management, and fun facts. With photos and links to related sites.

Presents features and characteristics. With External links.

Contains classification guide.

Presents description, life history and distribution.

Discusses classification, features, natural history, and habitats in Iowa state.