Spomer, Stephen M., authorGuppy, Crispin S., authorKohler, Steve, authorKondla, Norbert G., authorFisher, Michael S., authorScott, James A., authorSchmidt, B. Chris, authorJames A. Scott, publisher2007-01-032007-01-032006-04-28http://hdl.handle.net/10217/84934April 28, 2006.Includes bibliographical references (pages 71-73).New diversity is reported and discussed among North American butterflies. Several dozen new taxa are named. A new "sibling" species has been found to occur throughout the Rocky Mts., introducing a new butterfly species to most states in western U.S. and to southern Alberta and BC. Several taxa of Colias, Euphydryas, Lycaena, and Plebejus are raised to species status. Many name changes are made, and many taxa are switched between species to create several dozen new combinations. The relevance of species concepts to difficult groups of butterflies is explored.born digitaljournals (periodicals)engCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.ButterfliesLepidopteraText