Bumble bees of North America : an identification guide /
Williams, Paul(Paul Hugh),author.
Thorp, Robbin W.,1933-
Richardson, Leif.
Colla, Sheila.
This guide allows amateur and professional naturalists to identify all 46 bumble bee species found north of Mexico and to understand their ecology and changing geographic distributions.
Includes bibliographical references (page 203) and index.
Introduction -- Observing bumble bees -- Attracting bumble bees -- Bumble bee forage guide by ecoregion -- Maps and seasonal activity -- Bumble bee decline and conservation -- Threats to bumble bees -- Natural enemies -- Mimicry -- Distinguishing bumble bees from other insects -- Bumble bee names and classification -- How to use this book to identify bumble bee species -- Species accounts -- Square-or long-cheeked bees with a rounded angle on the midleg -- Short-cheeked bees with a rounded angle on the midleg -- Medium- or long-cheeked bees with a sharp angle on the midleg -- Hindleg (tibia) with the outer surface uniformly convex and densely hairy (cuckoo bumble bees, no workers) -- Identification keys to female and male bumble bees, with photos.
This guide allows amateur and professional naturalists to identify all 46 bumble bee species found north of Mexico and to understand their ecology and changing geographic distributions.
Bumblebees
Bumblebees
Bumblebees
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