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New Methods To Assess Cotton Varietal Stability And Indentify Discriminating Environments, Sterling Brooks Blanche, Sr. Jan 2005

New Methods To Assess Cotton Varietal Stability And Indentify Discriminating Environments, Sterling Brooks Blanche, Sr.

LSU Doctoral Dissertations

Studies were conducted in 2001-2004 evaluating genotype by environment interactions in cotton (Gossypium hirsutum L.). Genotype by Environment interactions were characterized using GGE Biplot for conventional cotton cultivars and their transgenic derivatives. Significant interactions existed for several non-target traits. Transgenic cultivars were taller, had greater height to node ratios, larger seed, and lower lint percentages. Transgenic cultivars containing the Bollgard gene yielded more than their conventional parents and STV4691B was the highest yielding, most stable cultivar. In 2002-2004, GGE Biplot was used to identify two levels (high/low) of discriminating locations for three distinct selection criteria. Crosses were made with parents …

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Ecotoxicology Of Metal-Hydrocarbon Mixtures In Benthic Invertebrates, Kurt A. Gust Jan 2005

Ecotoxicology Of Metal-Hydrocarbon Mixtures In Benthic Invertebrates, Kurt A. Gust

LSU Doctoral Dissertations

Metal-hydrocarbon mixtures are becoming increasingly prevalent in natural environments due to expanding industrial activity and urbanization. The ecotoxicology of metal-hydrocarbon mixtures in benthic environments is of particular concern because both classes of contaminants partition to sediments and can thereby exert toxic effects in benthic organisms. Mixtures of dissimilar chemicals (including metals and hydrocarbons) are broadly hypothesized to elicit independent toxic effects however; this hypothesis has little supporting data. The purpose of this dissertation was to test this hypothesis for metal-hydrocarbon mixtures using environmentally relevant exposures and to determine mechanisms for observed interactive effects. Sediment and water-only bioassays were conducted employing …

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Effects Of Spaced Retrieval On Memory And Quality Of Life In Older Adults With Probable Alzheimer's Disease, Karri S. Hawley Jan 2005

Effects Of Spaced Retrieval On Memory And Quality Of Life In Older Adults With Probable Alzheimer's Disease, Karri S. Hawley

LSU Doctoral Dissertations

This study was designed to explore the effects of spaced-retrieval training on memory and quality of life in older adults with probable Alzheimer’s disease. A total nineteen older adults with probable Alzheimer’s disease (AD) participated in these experiments. Experiment one was designed to determine whether the spacing effect is contributing to the success of the spaced-retrieval intervention. Participants were trained to recall a name-face association using either the adjusted spaced-retrieval method or a fixed interval retrieval method. The results showed a more consistent performance profile for the spaced retrieval group in comparison to the fixed interval group, providing evidence that …

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After Scotland: Irvine Welsh And The Ethic Of Emergence, Benjamin George Lanier-Nabors Jan 2005

After Scotland: Irvine Welsh And The Ethic Of Emergence, Benjamin George Lanier-Nabors

LSU Doctoral Dissertations

In “After Scotland: Irvine Welsh and the Ethic of Emergence,” the author’s objective is to mirror what he argues is the Scottish writer Irvine Welsh’s objective: to chart out a future Scotland guided by a generative life ethic. In order to achieve this objective, the author lays open and reengages Scotland’s past, discovers and commits to neglected or submerged materials and energies in its past, demonstrates how Welsh’s work is faithful to those and newly produced materials and energies, and suggests that Welsh’s use of those materials and energies enables readers to envision a new Scotland that will be integral …

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Effects Of Ozonation And Addition Of Amino Acids On Properties Of Rice Starches, Hee-Joung An Jan 2005

Effects Of Ozonation And Addition Of Amino Acids On Properties Of Rice Starches, Hee-Joung An

LSU Doctoral Dissertations

In this study, the effects of ozonation and the addition of amino acids on rice starches were determined in terms of pasting properties by using rapid visco-analyzer, thermal characteristics by using differential scanning calorimeter, crystallinity by using x-ray diffraction, and resistant starch yield. Results from viscosity analysis showed that the addition of lysine (6%) to ozonated Sigma rice starch significantly reduced peak viscosity (PV), minimum viscosity (MV), final viscosity (FV), and setback (SBK) by 918, 1024, 1023, and 105 cP, respectively. Moreover, it decreased pasting time, resulting in the faster swelling upon heating and less rigid gel formation upon cooling. …

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The Foundation Of An Apparel Factory: Culture's Place Becomes A Practiced Space, Kim T. Chavis Jan 2005

The Foundation Of An Apparel Factory: Culture's Place Becomes A Practiced Space, Kim T. Chavis

LSU Doctoral Dissertations

The study provides a reformulation of culture as space. Building on Michel Certeau's theory of space and place, this study incorporates Karla Holloway's theory of historicity, memory, and metaphor - specifically, how these elements are formed and behave - W.E.B. Dubois's theory of double consciousness, Homi Bhabha's theory of the beyond and interstices, John Fiske's culture of everyday life, Bourdieu's idea of the habitus, Brett Williams' theory of texturing, and Edward Said's travel theory. These critical ideas are woven together to construct an operating construct of space, which allows for that culture to be a dynamic, fluid construction, represented in …

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Biologically Inspired Learning System, Patrick Mcdowell Jan 2005

Biologically Inspired Learning System, Patrick Mcdowell

LSU Doctoral Dissertations

Learning Systems used on robots require either a-priori knowledge in the form of models, rules of thumb or databases or require that robot to physically execute multitudes of trial solutions. The first requirement limits the robot’s ability to operate in unstructured changing environments, and the second limits the robot’s service life and resources. In this research a generalized approach to learning was developed through a series of algorithms that can be used for construction of behaviors that are able to cope with unstructured environments through adaptation of both internal parameters and system structure as a result of a goal based …

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Samuel Beckett And Bilingualism: How The Return To English Influences The Later Writing Style And Gender Roles Of All That Fall And Happy Days, Julien F. Carriere Jan 2005

Samuel Beckett And Bilingualism: How The Return To English Influences The Later Writing Style And Gender Roles Of All That Fall And Happy Days, Julien F. Carriere

LSU Doctoral Dissertations

This dissertation addresses Samuel Beckett's bilingualism in an effort to understand how the author's use of language affected his writing style and depiction of gender. Beckett began writing in English, switched to French for the composition of new works for ten years, and then returned unexpectedly to English. His first English works are characterized by stylistic virtuosity, erudition, and misogyny. With Beckett's adoption of French his style became simple, spare, and cerebral. Plot structure based on a journey in early works was abandoned in favor of static situations and dialogue. Women were either ignored or viewed negatively. In 1956, Beckett …

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Conspiracy Culture In America After World War Ii, Valerie Rose Holliday Jan 2005

Conspiracy Culture In America After World War Ii, Valerie Rose Holliday

LSU Doctoral Dissertations

Feminism has all too often been reified as a theoretical category. Specifically, Marxist critical categories fail to account for the integral importance of gender in any sociopolitical critique. This dissertation attempts to dereify gender and demonstrate a theoretical model that seamlessly integrates psychoanalysis, Marxism, and feminism. Conspiracy culture in America since World War II is an ideal aperture through which we may envision such a theoretical approach, and indeed see the critical need for such an approach. This dissertation looks at several post-war American conspiracy narratives, including Oliver Stone’s JFK and Nixon, Don DeLillo’s Libra, Sidney Lumet’s Fail Safe, John …

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Synthesis, Characterization And Application Of Polymeric Surfactants In Micellar Electrokinetic Chromatography: Use Of Ionic Liquids As Modifiers, Simon M. Mwongela Jan 2005

Synthesis, Characterization And Application Of Polymeric Surfactants In Micellar Electrokinetic Chromatography: Use Of Ionic Liquids As Modifiers, Simon M. Mwongela

LSU Doctoral Dissertations

The goal of the research presented in this dissertation is to synthesize, characterize, and apply a novel chiral amino acid-based surfactant and achiral sulfate-based surfactants for the effective separations of chiral and achiral compounds in micellar electrokinetic chromatography (MEKC). The first part of this research involves novel synthesis, characterization, and application of polysodium oleyl-L-leucyl-valinate (poly-L-SOLV) for the separation of chiral compounds in MEKC. Surface tensiometry, proton nuclear magnetic resonance, infrared spectroscopy, densitometry and analytical ultracentrifugation were used as the characterization techniques. Optimal MEKC separating conditions were established by varying surfactant concentration, buffer concentration and pH, applied voltage, and capillary temperature. …

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V-Atpase Expression And Function In The Brine Shrimp, Artemia Franciscana: Role Of Proton Gradients In Anoxia-Induced Quiescence, Joseph Antonio Covi Jan 2005

V-Atpase Expression And Function In The Brine Shrimp, Artemia Franciscana: Role Of Proton Gradients In Anoxia-Induced Quiescence, Joseph Antonio Covi

LSU Doctoral Dissertations

Upon exposure to anoxia, encysted embryos of the brine shrimp, Artemia franciscana, enter a severely depressed metabolic state, the transition into which is facilitated in part by one of the largest intracellular acidifications ever reported for a eukaryotic organism. However, the endogenous origin of this pH shift remains largely unexplained. We hypothesize that the unexplained acidification is produced by a net flux of protons into the cytoplasm from compartments acidified by a V-type proton pump (V-ATPase) during aerobic development. Northern blots demonstrate expression of the V-ATPase subunit-B mRNA during early development, while Western blots demonstrate the expression of at …

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Creating Meaning In Organizational Change: A Case In Higher Education, Kathleen Barnett Jan 2005

Creating Meaning In Organizational Change: A Case In Higher Education, Kathleen Barnett

LSU Doctoral Dissertations

As change is an inevitable part of organizational life, this study explores one aspect of communication in organizational change: the creation and use of meaning during the change process. The implementation of a new, higher education admissions criteria framework of a state master plan is the specific change under study. University administrators, contracted consultants, and board staff members participated in the study. Framed by symbolic interactionism and a stakeholder perspective, I pose four research questions: RQ1: What meanings were created during the particular process of change under study? RQ2: How were meanings intentionally and unintentionally created among stakeholders during this …

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Nitrate Reduction And Methane Formation As Influenced By Iron-Centered Intermediate Redox Processes In Rice Soils, Bin Huang Jan 2005

Nitrate Reduction And Methane Formation As Influenced By Iron-Centered Intermediate Redox Processes In Rice Soils, Bin Huang

LSU Doctoral Dissertations

Rice fields are a major source of the greenhouse gases methane (CH4) and nitrous oxide (N2O) and contribute to nitrate (NO3-) pollution in waters. Ferric iron (Fe3+) and manganic manganese (Mn4+) are two intermediate alternative electron acceptors (AEAs) capable of regeneration in freshwater soils. In this investigation, the influences of iron-centered intermediate redox processes on NO3- reduction and CH4 formation in rice soils were studied using soil slurries, soil columns, and potted rice. Reduction of Fe3+-centered intermediate AEAs was mainly mediated by obligate anaerobes …

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Chorale And Canon In Alfred Schnittke's Fourth String Quartet, Aaminah Durrani Jan 2005

Chorale And Canon In Alfred Schnittke's Fourth String Quartet, Aaminah Durrani

LSU Doctoral Dissertations

Alfred Schnittke's String Quartet No. 4 (1989) is a passionate essay, full of fervor and anguish expressed through an eloquent and highly refined style. Essential to this style are the counterpoised textures of chorale and canon. Not only does the coherence of the Quartet's expansive formal design rest largely on the effective deployment of chorale and canon, but these devices are the very engines that drive Schnittke's musical argument. Perhaps the most stunning event of the Fourth Quartet occurs in the finale. In the closing moments of this long work, Schnittke replaces the dissonant and dynamic fury of the fortissimo …

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Sites Of Resistance: Language, Intertextuality, And Subjectivity In The Poetry Of Diane Wakoski, Cordelia Maxwell Hanemann Jan 2005

Sites Of Resistance: Language, Intertextuality, And Subjectivity In The Poetry Of Diane Wakoski, Cordelia Maxwell Hanemann

LSU Doctoral Dissertations

This dissertation explores the interconnectedness of language and related cultural texts and women’s subjectivity. The poststructuralist feminist enterprise of examining and critiquing language and signifying practices for the ways in which they impose social values and of interrogating and undermining the fixity of meanings in cultural texts will serve as my primary frame. Concerned with the individual (gendered) consciousness, poststructuralist feminist theory of subject formation posits that while language, along with ideologically biased texts of the culture, construct subjects, language and the cultural texts also serve as sites of resistance for the deconstruction and reconception of individual and collective subjectivities. …

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Voluntary Exercise In The C57b1/6j Mouse: Phenotypic Effects Of Varying Dietary Fat Levels And Hippocampal Gene Expression Differences Between High-Level And Low-Level Exercisers, Leslie Debardeleben Mclaughlin Jan 2005

Voluntary Exercise In The C57b1/6j Mouse: Phenotypic Effects Of Varying Dietary Fat Levels And Hippocampal Gene Expression Differences Between High-Level And Low-Level Exercisers, Leslie Debardeleben Mclaughlin

LSU Doctoral Dissertations

The drive to exercise voluntarily likely results from complex interactions between genes in many organ systems and various psychological parameters, such as motivation and the perception of fatigue. Reproducible variations in exercise intensity and duration are well established in laboratory rodents, but the genes responsible remain largely unknown. Also, to date, studies addressing the adaptive changes to exercise that might prevent dietary-induced obesity have focused primarily on energy intake and nutrient oxidation/partitioning, as opposed to genetics. We hypothesize that increased voluntary physical activity may be a normal mechanism in certain rodent strains to deter dietary-induced obesity and that in an …

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Regulation Of Glucose Metabolism In Dairy Cattle, Christie Cheatham Stanley Jan 2005

Regulation Of Glucose Metabolism In Dairy Cattle, Christie Cheatham Stanley

LSU Doctoral Dissertations

The experiments described herein are designed to elucidate many metabolic changes that occur to regulate the partitioning of nutrients between production and animal maintenance with particular regard to glucose metabolism and insulin sensitivity. The onset of milk production and parturition causes dramatic stress to the cow. The challenge of improving metabolism during this period is being addressed by nutritional management with the possibility of the addition of supplements. The use of Ca-propionate as a supplement did not affect glucose metabolism in transition cows. The data revealed that insulin sensitivity was low during the transition period, but the tissue responses to …

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Supercritical Fluid Extraction Of Rice Bran With Adsorption On Rice Hull Ash, Paresh Manilal Patel Jan 2005

Supercritical Fluid Extraction Of Rice Bran With Adsorption On Rice Hull Ash, Paresh Manilal Patel

LSU Doctoral Dissertations

Rice bran oil was extracted using environmentally-friendly supercritical carbon dioxide at varying conditions. Experimental treatments included pressure (27.6, 41.4 and 55.2 MPa), temperature (40 and 60 oC) and flow rates (25, 45 and 65 g/min) of supercritical carbon dioxide. Extracts collected at different time intervals during 4-hour extraction runs in a 3-L extractor were analyzed for oil yield and antioxidants. Normal-phase HPLC was used for analyzing the extract for important antioxidant compounds of oryzanol, tocopherols, tocotrienols. Silica rich rice hull ash adsorbent was also incorporated in combined extraction-adsorption experiments under similar supercritical fluid conditions. Supercritical extraction yields of rice bran …

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Regulatory Intricacies That Confer Temporal Control Of Conjugation And Antibiotic Production Functions In Streptomyces: New Variations On Old Themes, Kevin Lee Schully Jan 2005

Regulatory Intricacies That Confer Temporal Control Of Conjugation And Antibiotic Production Functions In Streptomyces: New Variations On Old Themes, Kevin Lee Schully

LSU Doctoral Dissertations

The complex life style of streptomycetes requires that the appropriate program of genes be expressed at the appropriate times. For example, conjugation occurs solely within the substrate mycelium stage of development while antibiotic production occurs in the aerial mycelium. Thus, complex regulatory mechanisms involving numerous modes of control have evolved that confer temporal regulation of functions governing these expression programs. Conjugation of the Streptomyces lividans plasmid pIJ101 utilizes only seven plasmid functions in its transmission. Two of these, tra and clt, are essential while three additional functions, spdA, spdB and kilB augment the process, with KorA and KorB regulating the …

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Recovering Ancient Ritual And The Theatre Of The Apache: A Journey Through The False Consciousness Of Western Theatre History, Marla Kathleen Dean Jan 2005

Recovering Ancient Ritual And The Theatre Of The Apache: A Journey Through The False Consciousness Of Western Theatre History, Marla Kathleen Dean

LSU Doctoral Dissertations

This dissertation examines past cultural influences that have shaped theatre historians' perception of ancient Greek and contemporary Native American performance. It suggests that through a recognition of these influences, which have long tempered the Western narrative of theatre, ancient and Indigenous performance can be reviewed as similar forms of a lived exchange. The study tracks the formation of certain beliefs and assumptions within performance history through Roman, early Christian and Renaissance cultural identities. It notes the misrepresentation of oral and popular theatre within theatrical scholarship through its reliance upon the written remains of the ruling classes and confronts the notion …

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The Free World Confronted: The Problem Of Slavery And Progress In American Foreign Relations, 1833-1844, Steven Heath Mitton Jan 2005

The Free World Confronted: The Problem Of Slavery And Progress In American Foreign Relations, 1833-1844, Steven Heath Mitton

LSU Doctoral Dissertations

Enacted in 1833, Great Britain’s abolition of West Indian slavery confronted the United States with the complex interrelationship between slavery and progress. Dubbed the Great Experiment, British abolition held the possibility of demonstrating free labor more profitable than slavery. Besides elating the world’s abolitionists, always hopeful of equating material with moral progress, the experiment’s success would benefit Britain economically. Presented evidence of the greater profits of free labor, slaveholders worldwide would find themselves with compelling reason to abandon slavery. Likewise, London policymakers would proceed with little need—and no economic incentive—to promote abolition in British foreign policy. British hopes foundered on …

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Wealth And Deprivation In The Delta: A Landscape Of Subsidization, Jacqueline Warren Mills Jan 2005

Wealth And Deprivation In The Delta: A Landscape Of Subsidization, Jacqueline Warren Mills

LSU Doctoral Dissertations

The Mississippi Delta, as defined by the Delta Regional Authority (DRA), is an area of historical and present deprivation. Persistent poverty, lackluster economic development opportunities, and the associated ills of this environment exist alongside large-scale, subsidized agriculture. These federal subsidy payments are criticized for increasing the wealth of corporate enterprises rather than stabilizing the family farmer for whom they were created. This dissertation examines the geography of agristructure, subsidies, and socio-economic characteristics in the Delta with the purpose of identifying spatial relationships among these three variables. Drawing from the Goldschmidt Hypothesis, this research proposes that areas of large-scale agristructure will …

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The Evolution Of Prezygotic Reproductive Isolation In The Drosophila Pseudoobscura Subgroup, Sheri Dixon Schully Jan 2005

The Evolution Of Prezygotic Reproductive Isolation In The Drosophila Pseudoobscura Subgroup, Sheri Dixon Schully

LSU Doctoral Dissertations

Newly forming species that have differentiated in allopatry may evolve numerous barriers that prevent the interbreeding when they come back into contact with each other. The objective of this dissertation is to evaluate some mechanisms of prezygotic reproductive isolation in the D. pseudoobscura subgroup. I begin by evaluating how the evolution of female preferences and male sexual characters lead to reinforcement between Drosophila pseudoobscura and its congener D. persimils. In particular, I will evaluate two alternative hypotheses; Preference Evolution and Discrimination Enhancement, to determine how selection reduces hybridization between these sister species. Both hypotheses predict a reduction in the overlap …

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Cytokines And Aeroallergens In The Pathogenesis Of Summer-Pasture Associated Obstructive Pulmonary Disease: Effects On Endothelin Production, Neutrophil Activation And Chemotaxis, Lais Rosa Rodrigues Costa Jan 2005

Cytokines And Aeroallergens In The Pathogenesis Of Summer-Pasture Associated Obstructive Pulmonary Disease: Effects On Endothelin Production, Neutrophil Activation And Chemotaxis, Lais Rosa Rodrigues Costa

LSU Doctoral Dissertations

Summer pasture-associated obstructive pulmonary disease (SPAOPD), a naturally occurring airway disease of horses, is characterized by clinical exacerbation associated with exposure to pasture environment during the summer. Aeroallergens are believed to trigger exacerbation of SPAOPD, cytokines are likely associated with the anamnestic response to aeroallergens, and endothelin (ET)-1 is a potential mediator of airway obstruction. The goal of this dissertation was to describe and explore the interaction of aeroallergens triggering inflammation and T lymphocytes cytokine profile with the recruitment and activation of neutrophils and synthesis of ET-1 by mononuclear leukocytes and airway epithelial cells. The temporal pattern of clinical exacerbation …

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Power, Money, And Sex(Uality): The Black Masculine Paradigm, Kendric Coleman Jan 2005

Power, Money, And Sex(Uality): The Black Masculine Paradigm, Kendric Coleman

LSU Doctoral Dissertations

This study develops the Black Masculine Paradigm (BMP), a construct used to trace historically specific components that inform black masculinity and explores the physical and psychological defensive strategies employed by black men in Richard Wright's Black Boy, Claude Brown's Manchild in the Promisedland, Nathan McCall's Make Me Wanna Holler, and James Earl Hardy's B-Boy Blues. Specifically, this project offers that power, money, and sex(uality) are located at the core of the BMP, and these social objectives are negotiated through politicization, prescribed masculinity, and heterosexuality. This project reads the politicization of the black male body through its presence in literature and …

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High Temperature Stress Responses Of Salvia Splendens And Viola X Wittrockiana, Seenivasan Natarajan Jan 2005

High Temperature Stress Responses Of Salvia Splendens And Viola X Wittrockiana, Seenivasan Natarajan

LSU Doctoral Dissertations

One of the greatest impediments affecting growth and development of bedding plants is high temperature stress. The deleterious effects of high temperature stress are the most pronounced during plug transplant and/or during the transition period from the nursery to the landscape. High temperature stress responses were investigated in Salvia splendens and Viola x wittrockiana to determine the morphological and physiological mechanism associated with the heat tolerance. Two genotypes for each species were used; a heat tolerant Vista and a heat sensitive Sizzler cultivar of salvia and Crystal Bowl Purple (CBP) a heat tolerant and Majestic Giant Red (MGR) a heat …

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Greenwashing: Visual Communication And Political Influence In Environmental Policy, Eric Jeffrey Jenner Jan 2005

Greenwashing: Visual Communication And Political Influence In Environmental Policy, Eric Jeffrey Jenner

LSU Doctoral Dissertations

Some contemporary theories in political science maintain that public lobbying is merely an expression of latent and resolute public opinion that is communicated to policymakers. Other theories contend that the public is highly manipulable and that public lobbying by extension can be considered a form of strategic framing that takes place through the news and paid media. Both theoretical approaches specify a function for words or text but are silent on the influence of photographs or images. In this dissertation, I hypothesize that environmental public lobbying operates as strategic framing and that text and photographs have unique and discrete effects …

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Adaptive Remote Visualization System With Optimized Network Performance For Large Scale Scientific Data, Mengxia Zhu Jan 2005

Adaptive Remote Visualization System With Optimized Network Performance For Large Scale Scientific Data, Mengxia Zhu

LSU Doctoral Dissertations

This dissertation discusses algorithmic and implementation aspects of an automatically configurable remote visualization system, which optimally decomposes and adaptively maps the visualization pipeline to a wide-area network. The first node typically serves as a data server that generates or stores raw data sets and a remote client resides on the last node equipped with a display device ranging from a personal desktop to a powerwall. Intermediate nodes can be located anywhere on the network and often include workstations, clusters, or custom rendering engines. We employ a regression model-based network daemon to estimate the effective bandwidth and minimal delay of a …

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The Music Salon Of Pauline Viardot: Featuring Her Salon Opera Cendrillon, Rachel Miller Harris Jan 2005

The Music Salon Of Pauline Viardot: Featuring Her Salon Opera Cendrillon, Rachel Miller Harris

LSU Doctoral Dissertations

Pauline Viardot (1821- 1910) was a famous mezzo-soprano with a career spanning twenty-four years (1839-1863). Her Music Salon is credited for launching the careers of Camille Saint-Säens, Jules Massenet, Gabriel Fauré, and Charles Gounod. After her retirement she turned her attention towards teaching and composition. She has written over 100 Vocal compositions, 15 Instrumental compositions and 5 Salon Operas. Chapter 1 presents an introduction and biography of the composer, with special emphasis on her family, friends, colleagues, performance career and music salon. Chapter 2 is a closer look at her salon opera Cendrillon including an analysis of the work. This …

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Revision Of Pocadius Erichson (Coleoptera: Nitidulidae), Andrew R. Cline Jan 2005

Revision Of Pocadius Erichson (Coleoptera: Nitidulidae), Andrew R. Cline

LSU Doctoral Dissertations

A revision of Pocadius Erichson (Coleoptera: Nitidulidae) was completed. A total of 46 species were (re)described, including 25 new species, a key to species constructed, and phylogenetic analysis performed. Taxonomic changes, including nomenclatural emendations, reinstatement of species, and description of new taxa, within this dissertation do not constitute formal changes as defined by the International Code of Zoological Nomenclature. Illustrations of the genitalia, key characters, and dorsal habitus of species are provided. The phylogeny demonstrates a monophyletic Pocadius. The phylogeny suggests a Palearctic origin of the genus with subsequent speciation into the Old World tropics and New World. Host specialization …

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