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Instar Head Widths, Individual Biomass, and Development Rate of Forest Tent Caterpillar, Malacosoma Disstria (Lepidoptera: Lasiocampidae), At Two Densities in the Laboratory
Jocelyn M. Muggli and William E. Miller

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Assessing the contribution of geography and host use to genetic structure in New York populations of the parasitoid wasp, Aphidius ervi
Haley J. Plasman and David M. Althoff

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The Biogeography of a Disjunct Plant-Insect Relationship: Thimbleberry and Diastrophis kincaidii (Hymenoptera: Cynipidae) in the Great Lakes Region
Michael C. Rotter and Mac Strand

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Corixid Transients on Stream Riffles (Hemiptera: Corixidae)
Ralph D. Stoaks, Joe K. Neel, and Richard L. Post

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Description and Biology of Bumblebees (Hymenoptera: Apidae) in Michigan
Robert W. Husband, Roland L. Fischer, and T. Wayne Porter

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Description of the Nymph of Ophiogomphus smithi (Odonata: Gomphidae), With a Key to the Species of Ophiogomphus in the Western Great Lakes Region
William A. Smith and Kenneth J. Tennessen

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Sirex nigricornis (Hymenoptera: Siricidae) Oviposition Preference and Development in Relation to Host Age, and a Novel Live-Trapping System for Wood-Borers
Jessica A. Hartshorn, Larry D. Galligan, Ace J.W. Lynn-Miller, and Fred M. Stephen

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The native and introduced bark and ambrosia beetles of Michigan (Coleoptera: Curculionidae, Scolytinae)
Anthony I. Cognato, Nicolas Barc, Michael Philip, Robert Mech, Aaron D. Smith, Eric Galbraith, Andrew J. Storer, and Lawrence R. Kirkendall

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Observations on the Biology of the Slender Seedcorn Beetle, Clivina Impressifrons (Coleoptera: Carabidae)
Robert D. Pausch and Lois M. Pausch

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Annotated List of Trichoptera Collected Along Furnace Run of the Cuyahoga Valley National Recreation Area in Northeastern Ohio
C. Peterson and B. A. Foote