Entomology Commons^™

Revision, Description, And Diagnosis Of Adult And Larval Pycnopsyche Spp. (Trichoptera: Limnephilidae) Using Morphological And Molecular Methods, Matthew Green

All Dissertations

The genus Pycnopsyche Banks, 1905 (Trichoptera: Limnephilidae) is the 2nd most species-rich genus of Nearctic Limnephilidae. Larvae and adults are ecologically diverse and widespread throughout eastern North America. Larvae construct cases from mineral or plant material and are frequently used by biomonitoring professionals at the species level to monitor trends in water quality. However, only two species of Pycnopsyche are currently separable as larvae, with diagnosis limited by the number of unknown larvae associated with known adults. Using morphological and molecular data, the phylogenetic relationships among Pycnopsyche species and species groups were inferred with Bayesian and Maximum Likelihood analyses to …

The Bellarmine Bee Bed: Organizing A Native Plant Garden Using Feedback From The Local Community, Kate Moran

Undergraduate Theses

Animal pollinators are the cornerstone of healthy ecosystems. Their survival is essential for the persistence of entire food chains: from the flowers they cross-pollinate directly, to the animals who depend on those plants for nutrition. The establishment of pollinator gardens—particularly ones that consist of native plants—is an effective way to enhance their biodiversity, abundance, and well-being.

The main goal of this thesis is to construct a pollinator garden that maximizes the benefits for animal pollinators using feedback from local gardeners. A survey was used to gather information about the popularity and preferences of 40 flowering plants, and after analyzing the …

Development Of Host-Selective, Pcr-Inhibiting Oligos As A Tool To Investigate The Eukaryotic Symbionts Of Insect Hosts, Christian L. Weinrich

2023 Midwest Ecology & Evolution Conference

Insects are hosts to diverse communities of other organisms. These communities can include microbes such as bacteria, yeast, and protists, as well as multicellular organisms such as nematodes and mites. The prokaryotic associates of many insects have been well-studied and are often investigated by amplifying and sequencing the gene for the 16S ribosomal subunit using universal primers.

However, the eukaryotic associates of many insects remain poorly characterized, and this is in part due to the difficulty in utilizing 18S (the eukaryotic analog for 16S) for eukaryote detection. Because the insect host is also a eukaryote and makes up the bulk …

Pollinators And Flowering Resources In Louisville Urban Green Spaces, Sarah Hobbs

2023 Midwest Ecology & Evolution Conference

Urban Greenspaces can appear in many different forms such as parks, urban orchards, and community gardens. These spaces provide important ecosystem services such as enhanced biodiversity, improved soil health, and increased carbon sequestration. Greenspaces such as parks and community gardens have been relatively well studied in the last few decades compared to urban orchards, despite the multitude of ecosystem services that can be provided or enhanced by these orchards. We hypothesize that urban orchards will provide the optimal conditions for pollinator communities because urban orchards normally have the greatest variety of vegetation and flowering resources, which is positively correlated with …

Effect Of Functional Trait Variation On Bee Body Temperature, Gabriella A. Muller

2023 Midwest Ecology & Evolution Conference

Bees are both ecologically and economically important pollinators for maintaining agricultural production and the health of many diverse ecosystems. As our world continues to change, bee diversity and population numbers are declining due to increasing temperatures. Functional traits such as body size and coloration can mediate the effects of such harsh thermal conditions on insect performance. Specifically, bee body size can significantly impact thermal parameters, with larger bees gaining and losing heat more slowly than smaller bees due to higher surface area to volume ratios. To obtain a better understanding of these relationships, we studied the variation in body temperature …

Effect Of Variable Canopy Cover On Floral Visitation, Toby Shaya

2023 Midwest Ecology & Evolution Conference

Pollinators provide essential services for ecosystem function. Studies aimed at understanding how availability of floral resources impacts pollinators find that canopy cover impacts bees indirectly by affecting the amount of floral resources in the forest understory and directly by changing the thermal environment in which they can thermoregulate. As ectotherms the maintenance of bee body temperature depends on the distribution of patches of sun and shade throughout a landscape, which can be dependent on canopy cover. The goals of this study were to understand how variable canopy cover drives floral visitation patterns in oak savanna found in the Oak Openings …

The Influence Of Urban Landscape Characteristics And Regional Climate On Bee Diversity, Bridget T. Harter

2023 Midwest Ecology & Evolution Conference

When compared to the lack of resources within homogeneous agricultural lands, cities can serve as a refuge for insect pollinators by providing a variety of floral and nesting resources. Areas of intense urbanization, with a high percentage of impervious surface, reduce the size and quality of pollinator habitat and negatively impact pollinators. The spatial complexity within and between urban landscapes may explain this contradictory view of cities as detrimental and beneficial for insect pollinators. This study examines the influence of (1) the spatial configuration of nearby, herbaceous vegetation and (2) regional climate on bee diversity across cities. Bee abundance and …

Urban Or Rural? Does It Matter To Bumble Bees An Analysis In Kalamazoo, Mi, Elizabeth M. Silber

2023 Midwest Ecology & Evolution Conference

Bumble bee species are declining in vast geographical areas due to many factors, including reductions in suitable nest site locations and floral resources, as land uses shift toward urbanization and agricultural intensification. The potential for urban areas to support bumble bees is understudied. The purpose of this study was to see how environment type impacts bumble bee species richness, abundance, and diversity in both urban and rural environments. Data from private and public spaces was gathered through the usage of citizen science. Observations were solicited under a previously established iNaturalist citizen science project, Southwest Michigan Bee Watch, and past data …

Defining Best Management Practices For Bee Conservation In Agroforestry Systems, Elijah C. Cardona

2023 Midwest Ecology & Evolution Conference

Wild bees are an indispensable part of neotropical ecosystems because of their role in agriculture and native flora pollination. Despite their importance, wild bees are threatened throughout their distribution by pesticides, habitat loss, land use change and climate change. The objective of this study was to understand how to better manage agroforestry systems for wild bees by asking if wild bee abundance is influenced by the level of shade cover, agroforest type, the number or diversity of floral resources, tree diversity, and the density of trees in an agroforest. A total of 10 agroforests were selected in San Luis de …

Influence Of Seed Mixes On Pollinator Communities Within An Electric Right-Of-Way, Kylee Nissen

2023 Midwest Ecology & Evolution Conference

Pollinator communities are amongst species facing dramatic population declines due to anthropogenic changes. These declines are driven by land use changes with agricultural expansion and urbanization. Utility lands must be managed in ways that prevent tall vegetation from encroaching, making them an ideal place to recreate native grasslands. This research aims to assess how different seed mixes used by utility companies impact pollinator community composition. The study site is a 15-acre electric ROW located outside of St. Louis IL. The site was prepared in 2021 and incorporates a randomized mix of turfgrass-seeded plots, native seeded plots, and unseeded plots acting …

Environmental Factors Shaping A Sawfly-Associated Community Of Parasitoids, Carson Kephart, Robin K. Bagely

2023 Midwest Ecology & Evolution Conference

A major goal of evolutionary biology is to understand the mechanisms that shape biodiversity, especially amongst highly speciose lineages such as parasitic wasps. However, most of these lineages are poorly described, with very little available natural history information. This lack of information limits our ability to uncover the environmental factors that contribute to their patterns of divergence, distribution, and abundance. To that end, here we take advantage of a community of hymenopteran parasites that has an unusually large amount of available information since they attack an economically important pine sawfly species, Neodiprion lecontei. We build upon a set of …

Assessing Functional Biodiversity For The Future Of Plants, Planet, And People, Ali Loker

Doctor of Plant Health Program: Dissertations and Student Research

Biodiversity plays a critical role in supporting life in global ecosystems and its links to ecosystem services and sustainability are recognized by scientific and non-scientific communities. Growing awareness of the importance of biodiversity is accelerated by discussions of its loss, and how to design interventions to conserve and mitigate a biodiversity crisis. Stakeholders are funding and implementing assessment strategies at various scales to help direct conservation efforts. There is also growing interest in measuring and communicating biodiversity outcomes.

Functional biodiversity characterizes the multiplicity of life forms into groups based on their diverse contributions to natural and agro-ecosystems. Assessing functional biodiversity …

Why The Delay In Recognizing Terrestrial Obligate Cave Species In The Tropics?, Francis G. Howarth

International Journal of Speleology

“Nothing could possibly live there!” They believed. Indeed, until recently, few specialized cave- adapted animals were known from volcanic, tropical, or oceanic island caves, and plausible theories had been put forward to explain their absence. But assume nothing in science! One must illuminate, explore, and survey habitats before declaring them barren. Our understanding of cave biology changed dramatically about 50 years ago following the serendipitous discovery of cave-adapted terrestrial arthropods in Brazil and on the young oceanic islands of the Galápagos and Hawai‘i. These discoveries and subsequent studies on the evolutionary ecology of cave animals have revealed a remarkable hidden …

A Monographic Revision Of The Jewel Scarabs Genus Chrysina From Panama, Colombia, And Ecuador (Coleoptera: Scarabaeidae: Rutelinae: Rutelini), Manuel D. Barria

Zea E-Books Collection

The work is a taxonomic revision of 28 species of the genus Chrysina Kirby (Scarabaeidae: Rutelinae: Rutelini) found in Panama (25), Colombia (2), and Ecuador (3). Chrysina tricolor (Ohaus), Chrysina chalcothea (Bates), and Chrysina cupreomarginata (F. Bates) are new re­cords for Panama. A new country record from northern Colombia is confirmed for Chrys­ina mercedesae Barria. Chrysina gaitalica Curoe and Hawks and Chrysina galbina Hawks are discovered at new localities in Panama; females of both species are discovered and described. Chrysina aurora (Bates) known from other localities in the west of the country, is rediscov­ered in Veraguas province 147 years after …

Additional Taxonomic Refinements Suggested By Genomic Analysis Of Butterflies, Jing Zhang, Qian Cong, Jinhui Shen, Leina Song, Paul A. Opler, Nick V. Grishin

The Taxonomic Report of the International Lepidoptera Survey

Comparative analyses of genomic data reveal further insights into the phylogeny and taxonomic classification of butterflies presented here. As a result, 2 new subgenera and 2 new species of Hesperiidae are described: Borna Grishin, subgen. n. (type species Godmania borincona Watson, 1937) and Lilla Grishin, subgen. n. (type species Choranthus lilliae Bell, 1931) of Choranthus Scudder, 1872, Cecropterus (Murgaria) markwalkeri Grishin, sp. n. (type locality in Mexico: Sonora), and Hedone yunga Grishin, sp. n. (type locality in Bolivia: Yungas, La Paz). The lectotype is designated for Aethilla toxeus Plötz, 1882. The type locality of Dion uza (Hewitson, 1877) is likely …

Insect Biodiversity Of Select Areas In The Western Suburbs Of Chicago, Bradley Dawson

Department of Entomology: Distance Master of Science Projects

Introduction

Insects make up an integral part of the landscape in North America and across the world. They occupy a myriad of niches in food webs, function as predators and prey, and provide environmental services like pollination of flowering plants and decomposition of dead animal carcasses and fecal matter. They take part in ecosystems that are often delicately balanced, and so conservation is often a worthwhile effort in areas that would otherwise be trampled by human activity. In the western suburbs of Chicago, Illinois where I reside, there is a mix of both heavily developed areas as well as some …

Bat Activity And Insect Biomass On Mcconnell Airforce Base Compared To Surrounding Wichita Parks, Michaela Sielaff

Master's Theses or Doctor of Nursing Practice

Bats are bioindicators of the communities to which they belong, giving researchers insight into the overall health of those ecosystems. Bats are also very adaptable and are capable of tolerating urbanization. Some species, such as Lasiurus borealis and Lasionycteris noctivagans may even benefit from adjacent industrial and commercial land use, although this is not the case for all bat species. In 2021, we began acoustic and mist net surveys of bats at McConnell Air Force Base (MAFB, or “base”) in Wichita, KS. However, no bats were captured or seen during mist net surveys, although some were detected acoustically over a …

Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison

All Master's Theses

Grooming is one of the crucial social behaviors of primate species that functions to remove parasites and maintain social bonds. Although, much data exists to support the idea that grooming is essential in forming and sustaining social bonds among individuals, there is a lack of information about the extent to which it removes ectoparasites or contributes to the spread of internal parasites. To fill this gap in the literature, we investigated the relationship between social contact behavior including grooming and intestinal parasite infection in Tibetan macaques (Macaca thibetana). This species lives at Mt. Huangshan in China. We used …

Hide And Seek: An Exploration Of Antipredator And Predator Avoidance Mechanisms In Orthopodomyia Signifera In Response To Predation From Toxorhynchites Rutilus, Nathaniel Dahlberg

Master's Theses

There have been many observations of larval Orthopodomyia signifera coexisting with the predator Toxorhynchites rutilus. There are three hypotheses that could explain how Or. signifera resists predation from Tx. rutilus. The first hypothesis states that larvae adapt behavioral changes that limit predation. The second hypothesis states thoracic setae serve as a physical defense that prevents Tx. rutilus from grasping Or. signifera. The third hypothesis states Or. signifera possess a chemical defense indicated by aposematic coloration. To test the first hypothesis larval Or. signifera were exposed to conspecific and heterospecific predation cues and their behavior was observed. Both cues …

Establishment Of The Invasive Cactus Moth, Cactoblastis Cactorum (Berg) (Lepidoptera: Pyralidae) In Pakistan: A Potential Threat To Cultivated, Ornamental And Wild Opuntia Spp. (Cactaceae), Muhammad Ather Rafi, Harry Pavulaan, Muhammad Islam, Muhammad Ashfaq, Haseeb Kamran, Walija Fayaz, Gul Naz Parveen, Riffat Sultana, Ahmad Zia, Waqar Ahmed, Qudrat Ullah, Muhammad Qasim, Falak Naz, Nazeer Ahmed, Muhammad Tariq Khan, Muhammad Saeed, Jalal Hayat Khan

The Taxonomic Report of the International Lepidoptera Survey

Subsequent to the significant accomplishment of biological control of Opuntia weeds in Australia, the larvae of the cactus moth, Cactoblastis cactorum (native to parts of South America), were released in many countries for the biological control of native Opuntia species (Simmonds and Bennett, 1966). Inauspiciously, larvae were also released in the Caribbean, where the moth spread naturally and by the human support all over the region (García-Turudi et al., 1971). Its enhanced dissemination rate and the biological potential for invasiveness, suggests that the cactus moth is likely to become an invasive pest of Opuntia in the Southeast United States, Mexico, …

Life History And Ecology Of The San Emigdio Blue Butterfly (Lepidoptera: Lycaenidae), Gregory R. Ballmer

The Taxonomic Report of the International Lepidoptera Survey

The San Emigdio blue butterfly, Plebulina emigdionis (Grinnell, 1905), occurs in small, scattered colonies in and near the southwestern Mojave Desert of California. Colonies depend on a symbiotic relationship with the ant Formica francoueri (Bolton), and occur only where the ant’s range (primarily in more mesic cis-montane habitats) narrowly overlaps that of the butterfly’s more widely distributed Atriplex larval hosts in more xeric habitats. Colonies of P. emigdionis are often localized around a few host plants and, therefore, sensitive to habitat changes due to anthropocentric causes and environmental stochasticity. The biology, ecology, and status of known colonies of P emigdionis …

An Integral Projection Modeling Approach To Understanding Demographic Effects Of Multispecies Mutualisms, Alexandra Campbell

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Exceptional Larval Morphology Of Nine Species Of The Anastrepha Mucronota Species Group (Diptera: Tephritidae), Erick J. Rodriguez, Gary J. Steck, Matthew R. Moore, Allen L. Norrbom, Jessica Diaz, Louis A. Somma, Raul Ruiz-Arce, Bruce D. Sutton, Norma Nolazco, Alies Muller, Marc A. Branham

Papers in Evolution

Anastrepha is the most diverse and economically important genus of Tephritidae in the American tropics and subtropics. The striking morphology of the third instars of Anastrepha caballeroi Norrbom, Anastrepha crebra Stone, Anastrepha haplacantha Norrbom & Korytkowski, Anastrepha korytkowskii Norrbom, Anastrepha nolazcoae Norrbom & Korytkowski, and three newly discovered and as yet formally unnamed species (Anastrepha sp. Peru-82, Anastrepha sp. nr. protuberans, and Anastrepha sp. Sur-16), and the more typical morphology of Anastrepha aphelocentema Stone, are described using light and scanning electron microscopy. To contribute to a better understanding of the interspecific and intraspecific variation among species in the mucronota …

Microbial Dimension Of Symbiosis And Dysbiosis In Fungus–Gardening Ants, Blake S. Bringhurst

Biology Theses

With symbiotic partners, the means by which a host obtain a symbiont influence the specificity between the host and the symbiont. One such system where symbiont specificity is seen to varying degrees is with higher attine ants. Higher attine ants have symbiotic relationships with the fungal cultivar they grow and the bacterial symbionts in their microbiomes. Among the higher attines, there are two broad groups of fungi. Most ants in the genus Trachymyrmex tend to grow Clade–B fungi, which are a group of undescribed Leucocoprinus species, while leaf–cutting ants in the genera Acromyrmex and Atta tend to grow Clade–A fungi …

The Effects Of Prescribed Fire On Ant-Mediated Seed Dispersal In Missouri, Eva M. Colberg

Dissertations

Many aspects of animal-mediated seed dispersal are vulnerable to disturbance, including partner identity and dispersal quantity and quality. This dissertation explores ant-mediated seed dispersal of the herb Sanguinaria canadensis in Missouri Ozark oak forests, where prescribed fire is a common land management tool. In Chapter 1, I test the definition of a keystone seed disperser using absolute and relative contributions of different ant species to the quantity and distance of seed dispersal, based on field observations of S. canadensis seed dispersal. I demonstrate that the ant Aphaenogaster rudis is better described as a numerically dominant rather than keystone seed disperser, …

Description, Diversity, And Phylogeography Of The North American Spider Beetle (Coleoptera: Ptinidae) Genus Coleotestudo, Robert Chambliss

Masters Theses & Specialist Projects

A new genus, Coleotestudo, is proposed for the American species currently placed in the genus Niptus LeConte and are transferred herein. Two new species from Mexico are also described as C. potosi n. sp. and C. nahua n. sp. Distinguishing morphological characteristics for the North American Coleotestudo species are given. The combined set of morphological evidence, DNA sequence data, and a Western New World distribution strongly support the hypothesis that Coleotestudo does not share a recent common ancestor with N. hololeucus and both represent unrelated clades of spider beetles.

During the summer of 2021, Coleotestudo was collected mainly from …

Diversity In Darkness: Shedding Light On Cryptic Species In The Cave Beetle Genus Darlingtonea Valentine Using 3rad Sequencing And Consequences Of Climate Change Based On Thermal Tolerance And Dehydration Resistance, Athanasios S. Apostolopoulos

Masters Theses & Specialist Projects

The relationship between geographic distribution and phylogeny is pronounced in patchy, discontinuous habitats that limit gene flow, such as cave ecosystems. The isolating nature and selective pressures of cave environments can result in relatively high levels of endemism and cryptic speciation in cave faunas. Cryptic speciation exhibited in cave faunas is poorly studied, though it is an integral aspect to consider when discussing conservation efforts.

Our study employed the 3RAD genomic sequencing technique and robust population sampling across the distribution of a monotypic genus of cave beetle, Darlingtonea Valentine, that inhabits karst systems in a nearly 200 square mile range …

Ant Cuticle Microsculpture: Diversity, Classification, Evolution, And Function, John Paul Hellenbrand

Master of Science in Integrative Biology Theses

My thesis covers the intricacies of ant microsculpture diversity, classification, evolution and function. To do this, the thesis is organized into two chapters. The first chapter is a review of ant cuticle and microsculpture diversity as well as including analyses examining the evolution and lability of microsculpture traits. I then review the literature for functional hypotheses related to ant microsculpture. The second chapter explores the relationship of microsculpture and important morphological, physiological, and ecological traits to evaluate support for functional hypotheses.

Trophish: Building A Global Database Of Freshwater Trophic Interactions, Jacob M. Ridgway

Honors Thesis

Freshwater management and research frequently use the trophic data of freshwater fishes. Despite this fact, it is difficult to perform a simple search of dietary information for any one fish species. FishBase represents, to our knowledge, the largest compilation of freshwater dietary information to date. However, it excludes a large portion of the ecological literature due to its development taking place prior to the creation of most modern scientific search engines. Our project (TroPhish) is building upon FishBase by digitizing approximately 130 years of data from the fish predation literature. Data from the primary and grey (e.g. theses, dissertations, reports) …

Risk-Prone And Risk-Averse Foraging Strategies Enable Niche Partitioning By Two Diurnal Orb-Weaving Spider Species, Mitchell D. Long

Electronic Theses and Dissertations

Niche partitioning is a major component in understanding community ecology and how ecologically similar species coexist. Temporal and spatial partitioning and differences in foraging strategy, including sensitivity to risk (variance), likely contribute to partitioning as well. Here, we approach this partitioning with fine resolution to investigate differences in overall strategy between two species of diurnal, orb-weaving spiders, Verrucosa arenata and Micrathena gracilis (Araneae: Araneidae), that share similar spatial positioning, temporal foraging window, and prey. Through field observation, we found that V. arenata individuals appear to increase spatial and temporal sampling to compensate for an overall risk-prone strategy that depends on …