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Mayflies (Ephemeroptera) of the Great Plains. II: Iowa

W. P. McCafferty, Todd Hubbard, Tom H. Klubertanz, R. P. Randolph and Mike Birmingham
Transactions of the American Entomological Society (1890-)
Vol. 129, No. 1 (Mar., 2003), pp. 77-105
Stable URL: http://www.jstor.org/stable/25078798
Page Count: 29
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Mayflies (Ephemeroptera) of the Great Plains. II: Iowa
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Abstract

A total of 15 families, 43 genera, and 106 species of Ephemeroptera are reported from Iowa, including the first state records for six genera and 27 species. The 224 historical records associated with the 79 species previously documented from Iowa are comprehensively reviewed for the first time. Besides new state records, 548 new county records are provided for 83 of the species. Mayflies are now known from 91 of the 99 Iowa counties and are well represented in both the western, Missouri River Drainage and the central/eastern, Mississippi River Drainage Systems. Low-gradient, sand-silt bottomed streams, found in much of Iowa and typical of the Great Plains, provide ideal habitat for mayflies in genera such as Centroptilum Eaton, Cercobrachys Soldán, Fallceon Waltz and McCafferty, Paracloeodes Day, Procloeon Bengtsson, Ephoron Williamson, and Hexagenia Walsh. Species of Baetidae and Heptageniidae often are predominant in benthic communities of Iowa streams. Affinities of the Iowa fauna are primarily eastern, and Iowa forms part of the known western range limits of at least 21 species, northern limits of two species, and eastern limit of one species.

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