Volume 14, Number 2 - Summer 1981 (1981)

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Seasonal and Vertical Distributions of Planthoppers (Homoptera: Fulgoroidea) Within a Black Walnut Plantation
B. C. Weber and S. W. Wilson

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A North American Record for Valgus Hemipterus (Coleoptera: Scarabaeidae) and Information on its Life Cycle
Joseph M. Mahar and Mark P. Oemke

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A List of the Butterflies (Lepidoptera: Papilionoidea) of the La Rue-Pine Hills Ecological Area
R. W. Sites and J. E. McPherson

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Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), Michigan: II. Noctuidae (Lepidoptera)
Edward G. Voss

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Gypsy Moth (Lepidoptera: Lymantriidae) Survey in Michigan
Murray Hanna

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Oviposition by Dendrosoter Protuberans (Hymenoptera: Braconidae) on Larvae of Scolytus Multistriatus (Coleoptera: Scolytidae) Occupied by Larvae of Entedon Leucogramma (Hymenoptera: Eulophidae)
Bruce H. Kennedy

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Observations of the Biology of Phasgonophora Sulcata (Hymenoptera: Chalcididae), a Larval Parasitoid of the Twolined Chestnut Borer, Agrilus Bilineatus (Coleoptera: Buprestidae), in Wisconsin
R. A. Haack, D. M. Benjamin, and B. A. Schuh

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Descriptions of Three New Species of Nearctic Ctenopelmatinae (Hymenoptera: Ichneumonidae)
John C. Luhman

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An Investigation on the Larval Habitat of Five Species of Tree-Hole Breeding Mosquitoes (Diptera: Culicidae)
Lee Mitchell and C. Lee Rockett

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The First Record of Phrictopyga Occidentalis in the United States (Homoptera: Fulgoroidea: Delphacidae)
Stephen W. Wilson