The Lives of Wasps and Bees
American Elsevier Publishing Company, Inc.
Many bees besides Colletes make their nests in underground burrows. Among the most numerous are the species of Andrena, of which there are over sixty in Britain and far larger numbers elsewhere. The largest are as big as honey-bees, but most are rather smaller and some only 6 to 7 mm long. Most of them are very hairy, some are conspicuous insects and a considerable number have pale bands on the abdomen, made up of fringes of hair. This banding seems not to give a sufficiently wasp-like appearance to be likely to deter predators, but it is so prevelant that perhaps it has such an effect.
Andrewes, Christopher, "Some Mining Bees" (1971). An. Paper 11.
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