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Full-Text Articles in Entomology
Effect Of Substrate Types On Aquatic Insect Distribution, Henry L. Bell
Effect Of Substrate Types On Aquatic Insect Distribution, Henry L. Bell
Journal of the Minnesota Academy of Science
The effect of substrate types on aquatic insect distribution in the Lester River, St. Louis County, Minnesota, was analyzed through regular measurement of the standing crop. It was found that most aquatic insects preferred a rubble substrate, followed by coarse gravel, bedrock, and coarse sand.
Distribution And Emergence Patterns Of Mayflies Ephemera Simulans (Ephemeroptera: Ephemeridae), Calvin R. Fremling, Gerrit P. Kloek
Distribution And Emergence Patterns Of Mayflies Ephemera Simulans (Ephemeroptera: Ephemeridae), Calvin R. Fremling, Gerrit P. Kloek
Journal of the Minnesota Academy of Science
Analyses of collections made during the years 1961-1964 reveal that Ephemera 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.
Spring Dispersal Of Some Leafhoppers And Aphids, A. G. Peterson, J. D. Bates, R. S. Saini
Spring Dispersal Of Some Leafhoppers And Aphids, A. G. Peterson, J. D. Bates, R. S. Saini
Journal of the Minnesota Academy of Science
Two species of leafhoppers and four species of cereal aphids appear to be transported to Minnesota each spring on strong winds from the south or southwest. The aster leafhopper, Macrosteles fascifrons (Stal); the English grain aphid, Macrosiphum avenae (Fabr.); the apple grain aphid, Rhopalosiphum fitchii (Sand.); and the greenbug, Schizaphis graminum (Rond.), usually arrive in Minnesota during late April or early May. Weather conditions favorable for northward movement of these insects consist of a high pressure area over the eastern states, a low pressure area over the western plains, and the resulting strong, persistent, south wind which is often called …