Provided by the London Museum of Natural History, this site indexes the bumblebees (genus Bombus) of the world. The list is searchable by biogeographic region or species name. The introduction page features a clickable map showing bumblebee densities of the world, a scatterplot showing the relationship between date of first description, taxonomic synonymies and range size (to demonstrate possible bias), and links to references. This site also holds a clickable cladogram (after Williams, 1995) of subspecies of Bombus with links to biogeographic maps and information. The colorful bumblebee images and informative figures (.gif) make this site a goldmine for entomology students and researchers.