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Hexapod Herald - Vol. 8, No. 16, December 19, 1996

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Hexapod Herald - Vol. 8, No. 15, November 14, 1996

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Phylogenetic Analysis And Taxonomic Revision Of The Perdita Subgenera Macrotera, Macroteropsis, Macroterella And Cockerellula (Hymenoptera: Andrenidae), Bryan N. Danforth

Da

No abstract provided.

Energy Metabolism, Enzymatic Flux Capacities, And Metabolic Flux Rates In Flying Honeybees, R. K. Suarez, J. R.B. Lighton, B. Joos, S. (Stephen) P. Roberts, J. F. Harrison

Biological Sciences Faculty Research & Creative Works

Honeybees Rely Primarily on the Oxidation of Hexose Sugars to Provide the Energy Required for Flight. Measurement of VCO₂ (Equal to VO₂, Because VCO₂/VO₂ = 1.0 during Carbohydrate Oxidation) during Flight Allowed Estimation of Steady-State Flux Rates through Pathways of Flight Muscle Energy Metabolism. Comparison of V(_Max) Values for Flight Muscle Hexokinase, Phosphofructokinase, Citrate Synthase, and Cytochrome C Oxidase with Rates of Carbon and O₂ Flux during Flight Reveal that These Enzymes Operate Closer to V(Max) in the Flight Muscles of Flying Honeybees Than in Other Muscles Previously Studied. Possible Mechanistic …

Hexapod Herald - Vol. 8, No. 14, October 23, 1996

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Hexapod Herald - Vol. 8, No. 13, September 27, 1996

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Hexapod Herald - Vol. 8, No. 12, September 4, 1996

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Emergence And Overwintering Brood Of Douglas-Fir Beetle Seven Years After The Clover Mist Fire On The Clarks Fork Ranger District, Shoshone National Forest, Wyoming, Judith E. Pasek

Judith E Pasek

Emergence patterns and population levels of Douglas-fir beetles (DFB), Dendroctonus pseudotsugae Hopkins, in the seventh year of infestation following the Clover Mist Fire were evaluated on the Clarks Fork Ranger District of the Shoshone National Forest. Adult emergence in 1995 returned to a single peak beginning in mid-June, about a week later than normal likely due to cold, wet spring weather. Adults of both the '93-'94 and '94-'95 generations emerged, demonstrating for the second year in a row that DFB can extend its life cycle up to two years. Almost half of the total emergence of the '93-'94 generation was …

Hexapod Herald - Vol. 8, No. 11, August 7, 1996

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Hexapod Herald - Vol. 8, No. 10, July 9, 1996

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Molecular Phylogeny And Typing Of Blackflies (Diptera: Simuliidae) That Serve As Vectors Of Human Or Bovine Onchocerciasis, Jianming Tang, Kenneth Pruess, Eddie W. Cupp, Thomas R. Unnasch

Department of Entomology: Faculty Publications

A subregion of the mitochondrial large subunit (16s) rRNA gene was amplified by polymerase chain reaction (PCR) from nine species of blackflies (Diptera: Simuliidae) which serve as natural or experimental vectors of human or bovine Onchocerca parasites. PCR products from each species of blackfly were tested by directed heteroduplex analysis (DHDA), and their genotypes established according to diagnostic banding patterns of the heteroduplex products. Three alleles of mitochondrial 16s rRNA were found to exist in members of the Simulium (Edwardsellum) damnosum sensu lato complex from West Africa, and two alleles were found in the Neotropical Simulium (Psilopelmia …

Hexapod Herald - Vol. 8, No. 9, June 20, 1996

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Hexapod Herald - Vol. 8, No. 8, June 7, 1996

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Aphids (Homoptera: Aphididae) Colonizing Cotton In The United States, Manya B. Stoetzel, Gary L. Miller, Patti J. O’Brien, J. B. Graves

USDA Systematic Entomology Laboratory

Eight aphid species known to colonize cotton in the United States are described and illustrated. A brief summary of taxonomic characteristics, usual hosts, and distribution within the United States are given for each species. Pictorial and dichotomous keys are included to aid personnel charged with detection, identification, and control of aphids associated with cotton in the United States.

Hexapod Herald - Vol. 8, No. 7, May 22, 1996

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Hexapod Herald - Vol. 8, No. 6, May 8, 1996

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Response Of The Fruittree Leafroller (Archips Argyrospila) To Salt Tolerant, Baldcypress (Taxodium Distichum) Seedlings, Rachel A. Rollason

Honors Theses

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Valuing Risk Tradeoffs And Voluntary Insect Reduction, Luanne Lohr, Timothy Park, Leon Higley

Department of Entomology: Faculty Publications

Farmers’ willingness to voluntarily reduce insecticide use is not considered when regulatory approaches to environmental protection are proposed. Regulations that require behavior that would voluntarily be undertaken are excessive and economically inefficient. Using survey data from a contingent valuation scenario, we demonstrate the willingness of crop producers in four Midwestern states in the U.S. to trade yield losses for environmental risk reduction by eliminating an insecticide application. The mean acceptable yield loss for a sample of 1,138 producers in Illinois, Iowa, Nebraska, and Ohio is $8.25 per acre. Acceptable yield loss increases with the rated importance of environmental goods (fish, …

Hexapod Herald - Vol. 8, No. 5, April 18, 1996

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Hexapod Herald - Vol. 8, No. 4, April 8, 1996

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B843: The Ecology, Economics, And Management Of Potato Cropping Systems: A Report Of The First Four Years Of The Maine Potato Ecosystem Project, A. Randall Alford, Francis A. Drummond, Eric R. Gallandt, Eleanor Groden, David A. Lambert, Matt Liebman, Michele C. Marra, Jeffrey C. Mcburnie, Gregory A. Porter, Bacilio Salas

Bulletins

The bulletin reports on the first four years of the Maine Potato Ecosystem Project, a long-term, multidisciplinary study of alternative crop management strategies. The study site is a 15-acre tract on the northern boundary of the University of Maine's Aroostook Farm in Presque Isle, Maine, divided into 96 main plots that are grouped into four blocks. Each block is an area where soil survey data show similar soil characteristics. Thus, given the same production inputs, the crop output is expected to be the same on each plot within a block. Within each block there are 24 plots to which the …

Factors Affecting Nitrogen Fixation Rates In Termites (Isoptera: Rhinotermitidae: Reticulitermes) And Termite Nitrogen Contributions Of Forest Ecosystems, Anthony Duane Curtis

Biological Sciences Theses & Dissertations

Termites host symbiotic bacteria that fix atmospheric nitrogen, which makes termites important in the biogeochemical cycling of nitrogen in ecosystems. The objective of this study was to estimate annual nitrogen contributions by termites by examining seasonal rates of nitrogen fixation, seasonal abundance of different termite castes and their nitrogenase activity, the effects of dietary nitrogen on nitrogenase activity, and low oxygen and high carbon dioxide atmospheres on termite nitrogenase activity, and the accuracy of mark-recapture studies to estimate termite population size.

Termite nitrogen fixation rates were monitored monthly for 10 Reticulitermes Holmgren colonies from June, 1993, to December, 1995. Rates …

Tb160: The Horse Flies And Deer Flies Of Maine (Diptera, Tabanidae), L. L. Pechuman, Richard Dearborn

Technical Bulletins

The distribution of Maine Tabanidae is of special interest because of the number of species with more southern ranges which reach their northeastern limit in Maine. A few northern species reach their southern limit in the state. This paper includes all of the species known or likely to be found in Maine with specific localities by county for the more unusual species and for species not found throughout the state.

Revision And Phylogeny Of The Neotropical Genus Cnernida (Coleoptera: Scarabaeidae: Rutelinae), Mary Liz Jameson

University of Nebraska State Museum: Entomology Papers

The scarab genus Cnemida includes eight species (including C. gigantea Jameson n. sp. from Colombia and C. tristriata Jameson n. sp. from Surinam) that inhabit tropical moist and premontane forests of South America, Central America, and Mexico. Keys to adults, diagnostic characters, descriptions, and distributions are presented. The larva of C. intermedia Bates is described and integrated into a key to larvae of the tribe Rutelini. A cladistic analysis among the species of Cnemida is based on 35 morphological characters and uses members of the genera Pelidnota and Rutela as outgroups. Four equally parsimonious cladograms are discussed.

Hesperiidae Of Central Rondonia, Brazil: Celaenorrhinus Hiibner (Lepidoptera: Pyrginae), With Descriptions Of Three New Species And Taxonomic Comments, George T. Austin, Stephen R. Steinhauser

Insecta Mundi

Eight species of Celaenorrhinus (Hesperiidae: Pyrginae) occur near Cacaulhdia in central Rondonia, Brazil. Three of these represent unnamed species and are described as new: Celaenorrhinus orneates Austin, Celaenorrhinus par Steinhauser & Austin, and Celaenorrhinus autochton Steinhauser & Austin. The male of C. saviais described for the first time. Both sexes of all 8 species (except female C. orneates) and their genitalia are illustrated. Males of C. savia and C. orneates are similar to C. jao in lacking tibial tufts, modified thoracic scales, and abdominal pouches; C. autochton lacks tibial tufts and modified thoracic scales. This adds to the diversity …

Book Notices

Insecta Mundi

A considerable number of books have been published since our last issue. We have not asked specialists to write formal reviews of these titles. Instead, we have listed them here, with short descriptions. Reviews may be published in later issues, depending on space and available reviewers.

The Genus Scelolyperus Crotch In North America (Coleoptera: Chrysomelidae: Galerucinae), Shawn M. Clark

Insecta Mundi

A key and diagnoses are provided for the North American species of Scelolyperus Crotch. Descriptions are given for Scelolyperus pasadenae, new species from California and Scelolyperus tetonensis, new species from Wyoming. Luperus morriaoni Jacoby is treated as a junior synonym of Luperus varipes LeConte, Luperodes nigrovirescens Fall is treated as a junior synonym of Luperus nigrocyaneus LeConte, and Scelolyperus chautauquus Wilcox is treated as a junior synonym of Scelolyperus liriophilus Wilcox, new synonymies. Luperus lecontii Crotch is transferred to Scelolyperus, new combination. Distributional and biological data are provided for each species.

The Rondani Cecidomyiidae (Diptera), Raymond J. Gagne, Mario Solinas

Insecta Mundi

The Rondani collection of Cecidomyiidae in Florence, Italy, is cataloged to account for existing specimens of Rondani species. Areport is made on the status and identity of each of Rondani's 16 species of Cecidomyiidae. Types of 12 species are represented by specimens in good to poor condition; those of the remaining four species cannot be found. Alectotypeis designated for Brachincura fuscogrisca and illustrations are given of its male genitalia and part of its antenna. Recommendations are made for future fixation of lectotypes or neotypes of some of Rondani's species.

Consideraciones Sobre El Género Diastolinus (Coleoptera: Tenebrionidae: Pedinini) En Cuba, Con Descripción De Dos Nuevas Especies., Orlando H. Garrido, Esteban Gutierrez

Insecta Mundi

Two new species of the genus Diastolinus are described for the island of Cuba, D. alfaroi and D. orientalis. After securing and comparing large series from the type localities of Diastolinus macamboensis and D. garciai, as well as from intermediate territories, we suggest, that these two taxa are indistinguishable; therefore we consider D. garciai as a junior synonym of D. macamboensis. In the private collection of the senior author are represented several new, undescribed populations.

Character Analysis Of The Western Hemisphere Genera Of Family Manicapsocidae (Psocoptera): Genus Epitroctes Reinstated With Descriptions Of Four New Species, Edward L. Mockford

Insecta Mundi

The characters of the named genera of family Manicapsocidae from the Western Hemisphere are reviewed: Nothoentomum Badonnel, Phallopsocus Badonnel, and Epitroctes Mockford. The synonymy of Nothoentomum andEpitroctes is refuted. Phenetically, Epitroctes stands closer to Phallopsocus than to Nothoentomum. Four new species of Epitroctes are described, one from Trinidad (West Indies), two from Costa Rica (one of these also recorded from Panama), and one from Socorro Island, Mexico. A key to the known species of Epitroctes is included.