Download Bumble bees of North America : an identification guide by Paul H. Williams, Robbin W. Thorp, Leif L. Richardson, PDF

By Paul H. Williams, Robbin W. Thorp, Leif L. Richardson, Sheila R. Colla

More than ever earlier than, there's frequent curiosity in learning bumble bees and the severe position they play in our ecosystems. Bumble Bees of North America is the 1st entire consultant to North American bumble bees to be released in additional than a century. Richly illustrated with colour photos, diagrams, variety maps, and graphs of seasonal job styles, this advisor permits novice naturalists to spot all forty six bumble bee species discovered north of Mexico and to appreciate their ecology and altering geographic distributions.

The e-book attracts at the newest molecular learn, indicates the large colour version inside species, and publications readers in the course of the many complicated convergences among species. It attracts on a wide repository of information from museum collections and provides state of the art effects on evolutionary relationships, distributions, and ecological roles. Illustrated keys enable identity of colour morphs and social castes.

A landmark ebook, Bumble Bees of North America units the normal for publications and the examine of those very important insects.

  • The top advisor but to the forty six famous bumble bee species in North the United States north of Mexico
  • Up-to-date taxonomy comprises formerly unpublished effects
  • Detailed distribution maps
  • Extensive keys determine the numerous colour styles of species

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Additional info for Bumble bees of North America : an identification guide

Sample text

Robber flies (Asilidae), often close mimics of bumble bees, catch flying bees and inject them with enzymes before consuming their internal organs. ), capture live bees and paralyze them with specialized venom. The bees are then used to feed the wasp’s developing larvae. Other predators include assassin bugs (Reduviidae) and dragonflies (Odonata). Bumble bees are host to a variety of parasitoids, animals that lay their eggs inside their hosts’ bodies, typically with the larvae developing inside the living host.

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