Proceedings of the Entomological Society of Washington
While studying the biology of various species of bees and wasps, K. V. Krombein of the U. S. Department of Agriculture collected many mites living in association with these insects. Most of the mites belonged to the family Saproglyphidae, and have been described in another paper. Those described in this paper, however, are members of the family Acaridae, even though they may superficially appear to belong to the Saproglyphidae. Adults, as well as hypopial nymphs, were obtained in three of the four species studied. The hypopial nymphs are quite distinct generically, but the adults are more or less nondescript. Consequently, the genera and species are based upon the hypopial forms. The biological notes on these mites and their hosts are discussed by K. V. Krombein in the following paper; rearing nest numbers are given here for correlation with his studies. I wish to take this opportunity to thank A. M. Hughes of London for her help.
Baker, Edward W., "Some Acaridae from Bees and Wasps (Acarina)" (1962). An. Paper 254.
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