Shore Flies (Diptera: Ephydridae) of the Hanford Site, Washington
Zack, Richard S.
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Information is presented concerning the species composition, seasonal appearance, and habitat distribution of shore flies (Diptera: Ephydridae) at the Hanford Nuclear Site located in south-central Washington State. The Hanford Site represents one of the largest undisturbed remnants of a shrub-steppe plant community in the western United States. Fifty-six species of shore flies in 32 genera were collected during the period 1994-1997. Aspects of the temporal distribution, relative abundance, and habitat selection of each species are discussed and compared to their appearance in the greater Pacific Northwest and with the results of a similar study conducted at Mount Rainier National Park which is located in the Cascade Mountain Range of central Washington. New distribution records for Washington are Atissa litoralis, Hydrochasma faciale, Leptopsilopa varipes, Notiphila erythrocera, Philotelma alaskensis, Scatophila unicornis, and Trimerina madizans. Because the Hanford Site was removed from public access and therefore widespread development in 1943, this study provides an understanding of the shore fly fauna that might have been common throughout the semi-arid, shrub-steppe region of central Washington before the advent of large-scale agriculture and urbanization