"I enjoyed Bumble Bees of North America and learned new things that will be useful in my work. This is a lovely book."--Sam Droege, USGS Patuxent Wildlife Research Center "A better team of scientists couldn't have written this amazing new book on bumble bees. Filled with diverse content, it will be popular with its broad audience. Readers will want to get out and find bumble bees, observe them, and learn what they can do to conserve them."--Stephen L. Buchmann, University of Arizona Inhaltsverzeichnis Introduction 7 Observing Bumble Bees 17 Attracting Bumble Bees 20 Bumble Bee Forage Guide by Ecoregion 22 Maps and Seasonal Activity 29 Bumble Bee Decline and Conservation 31 Threats to Bumble Bees 33 Natural Enemies 35 Mimicry 38 Distinguishing Bumble Bees from Other Insects 42 Bumble Bee Names and Classification 45 How to Use This Book to Identify Bumble Bee Species 48 Species Accounts 51 SQUARE- OR LONG-CHEEKED BEES WITH A ROUNDED ANGLE ON THE MIDLEG - Bombus vosnesenskii 52 - Bombus caliginosus 54 - Bombus vandykei 57 - Bombus impatiens 59 - Bombus bimaculatus 62 - Bombus perplexus 64 - Bombus vagans 67 - Bombus sandersoni 70 - Bombus jonellus 73 - Bombus frigidus 75 - Bombus mixtus 77 - Bombus ternarius 80 - Bombus huntii 82 - Bombus sylvicola 84 - Bombus melanopygus 87 - Bombus bifarius 90 - Bombus centralis 93 - Bombus flavifrons 95 - Bombus sitkensis 98 - Bombus polaris 100 - Bombus balteatus 103 - Bombus neoboreus 105 - Bombus hyperboreus 108 SHORT-CHEEKED BEES WITH A ROUNDED ANGLE ON THE MIDLEG - Bombus terricola 111 - Bombus occidentalis 114 - Bombus cryptarum 117 - Bombus franklini 119 - Bombus affinis 121 - Bombus griseocollis 123 - Bombus morrisoni 126 - Bombus fraternus 128 - Bombus crotchii 130 - Bombus rufocinctus 133 MEDIUM- OR LONG-CHEEKED BEES WITH A SHARP ANGLE ON THE MIDLET - Bombus fervidus 136 - Bombus borealis 139 - Bombus distinguendus 142 - Bombus appositus 144 - Bombus pensylvanicus 147 - Bombus auricomus 150 - Bombus nevadensis 152 HINDLEG (TIBIA) WITH THE OUTER SURFACE UNIFORMLY CONVEX AND DENSELY HAIRY (CUCKOO BUMBLE BEES, NO WORKERS) - Bombus citrinus 155 - Bombus variabilis 157 - Bombus insularis 159 - Bombus bohemicus 161 - Bombus suckleyi 163 - Bombus flavidus 165 Identification Keys to Female and Male Bumble Bees, with Photos 168 Glossary 199 Additional Resources 203 Acknowledgments 204 Photo Credits 206 Index 207
