Evolution, distribution, and classification of terrestrial arthropods, with emphasis on hexapods. Students practice identification using museum collections, build keys and databases, and make a substantive collection of regional insects. Lectures and labs are the same as for ENT 327, but with additional assignments and evaluation appropriate to graduate studies. Prerequisite: Consent of instructor. Credit can only be obtained for one of ENT 327, 427 or 527. Offered in alternate years.