OutdoorNebraska

62 Collection locations for the Northern Crayfish, Orconectes virilis, in Nebraska, 1995-2010. Native distribution of the Northern crayfish, Orconectes virilis, in North America

• Cover
• The Crayfish of Nebraska
• Nebraska's River Basins
• Table of Contents
• Preface
• Acknowledgements
• Introduction
• Anatomy
• The Biology of Crayfishes
• Nebraska Crayfish Collections
• Geology and Glaciations
• Body Measurements and Ratios
• Literature Cited
• Glossary
• Identification Key to Nebraska's Crayfishes