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Article written by Calvin R. Fremling and Gerrit P. Kloek regarding emergence records over a 3-4 period in Minnesota and Wisconsin. Abstract: "Analyses of collections made during the years 1961-1964 reveal that Ephemora simulans is widely distributed in the lake regions of Minnesota and Wisconsin. The period of maximum emergence in central Minnesota and northern Wisconsin occurs during the last three weeks in June, the peak in extreme northern Minnesota about two weeks later." Fremling and Kloek are credited as, respectively: "Professor of biology at Winona State College" and "received the B.S. degree at Winona State College and is presently completing work for the Ph.D. degree in zoology at Southern Illinois University." Article reprinted from the Journal of the Minnesota Academy of Science, volume 35, number 2-3, 1968-1969. 2 pages. Part of the Cal R. Fremling Collection.
Fremling, Cal R., "Distribution and emergence patterns of mayflies Ephemera simulans (Ephemeroptera: Ephemeridae)" (1960). Cal Fremling Papers. 24.
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