Entomology Commons^™

A Phylogeographic Study Of The Kentucky Endemic Cave Beetle Neaphaenops Tellkampfii Erichson (1844), Mahamad Miya

Masters Theses & Specialist Projects

Cave beetles are an excellent group to study evolutionary history and speciation by isolation within cave habitats. However, they are underrepresented in such studies, particularly in North America, one of the hotspots of cave biodiversity where beetles account for a significant proportion. The present research addresses this issue by focusing on the Kentucky endemic cave beetle, Neaphaenops tellkampfii, a species hypothesized to comprise four subspecies. Based on allozyme data, previous studies have noted high genetic variation within and high similarity among local populations of this beetle, suggesting complex evolutionary dynamics. In this regard, this study aims to elucidate the evolutionary …

A Systematic Study Of The Highly Endemic Spider Beetle Fauna (Coleoptera: Ptinidae: Ptininae) Found In The Coastal Deserts Of Perú, Marlena Askren

Masters Theses & Specialist Projects

Spider beetles are small, often flightless insects that occur in hyperarid environments around the world. They exhibit interesting morphology and behavior that allows them to conserve water they obtain from plant material, dung, and other detritus. One hyperarid region in which they are found is the Pacific coast of Perú and northern Chile. The Sechura Desert, Peruvian Coastal Desert, and Atacama Desert make up the arid coast where spider beetles occur from north to south. Through multiple years of field work and museum collections, populations of spider beetles were found along the coast in isolated pockets of vegetation, separated by …

Diversity And Phylogeny Of Spider Beetles (Ptinidae: Ptininae) In Coastal Chile And Peru, Jacob Bowen

Masters Theses & Specialist Projects

Spider beetles of South America have historically received little systematic study, though now they are the subject of recent diversity surveys and documentation. This investigation contributes to the ongoing exploration of spider beetle diversity in South America by adding records for the recently described Cordielytrum and the yet to be described Furcillifer, as well as constructing phylogenies with new genetic material. MaxEnt was used to create an ecological niche model revealing habitat suitability in Chile and Peru for Cordielytrum, a genus of flightless spider beetles currently known only from Peru. Even with few occurrence records, a model with …

Learning In Nonleafcutting Fungus-Gardening Ants, Elizabeth D. Boshers

Biology Theses

Social complexity influences learning and other cognitive behaviors, but for insects, this influence is not well understood. Delayed rejection is an aversive learning behavior previously studied exclusively in leafcutting ant species, the most socially complex of the fungus-gardening ants. Fungus-gardening ants are unique in that they do not directly consume the material they forage, using it instead as substrate to cultivate a symbiotic fungus on which the ants are obligately dependent. Here, I attempt to induce delayed rejection in several fungus-gardening ant species that exhibit a range of social complexity, then compare the characteristics of delayed rejection behavior among species. …

Assessing The Foraging Habits Of Two Species Of Long-Horned Bees (Melissodes, Apidae) Using Dna Barcodes Its2 And Trnl, Rebecca Jane Foy

Theses, Dissertations and Capstones

Sunflowers (Helianthus, Asteraceae) are an important crop used for oil, dye, fodder, and edible seeds. Long-horned bees (Melissodes, Apidae) are solitary species native to the Americas that specialize in sunflower pollination; they are among the most frequent visitors to sunflowers, and have been shown to enhance yield, offering considerable economic benefits to sunflower production. This study used metabarcoding to investigate the foraging habits of two understudied Melissodes species, M. trinodis and M. agilis. Using the ITS2 and trnL barcodes, our study aimed to (1) investigate the plants visited by M. agilis and M. trinodis and (2) assess the distances Melissodes …

Correction On The Status Of Nematodes Pavidus Horn, 1886 (Coleoptera: Eucnemidae: Dromaeolinae: Dromaeolini), With Redescriptions Of Two Species From The Southeastern United States And The Caribbean, Robert L. Otto

Insecta Mundi

The status of Nematodes pavidus Horn (Coleoptera: Eucnemidae), in relation to Nematodes punctatus LeConte and Nematodes teres Horn is being questioned after Muona (2000) revised the family in the Nearctic region. Investigations into the status of N. pavidus included explorations of the histories among these three species and examining images of the types through the Museum of Comparative Zoology’s website. It has been confirmed that Muona erred by synonymizing N. pavidus with N. teres before transferring both N. punctatus and N. teres to Dromaeolus Kiesenwetter. A correction has been made by transferring N. pavidus …

Blue Exoskeleton, Aridity, And Thermoregulation In Some Western Nearctic Spider Wasps (Hymenoptera: Pompilidae), Frank E. Kurczewski

Insecta Mundi

Several Nearctic spider wasp genera and subgenera in the subfamily Pompilinae (Hymenoptera: Pompilidae) in the arid western United States and northern Mexico are characteristically blue, violet, or purple in color: Aporus Spinola; Plectraporus Bradley; Chelaporus Bradley; Psorthaspis Banks; Chalcochares Banks; Evagetes Lepeletier; and Allochares Banks. Other genera and subgenera of Pompilinae in western United States and northern Mexico have one or more bluish or violaceous species: Episyron Schiødte; Notiochares Banks; Pompilinus Ashmead; Anoplius Dufour; Hesperopompilus Evans; Ammosphex Wilcke; and Arachnospila Kincaid. In California, 27/79 (34.2%) species of Pompilinae are blue, violet, or purple. The number of blue, violet, or purple …

New State And Adult Host Records For Species Of Anthaxia Degeer And Melanophila Eschscholtz (Coleoptera: Buprestidae) In The Western United States, Richard L. Westcott, Luc Leblanc

Insecta Mundi

New state records are provided for one species of Anthaxia (Haplanthaxia) Reitter, six species of Anthaxia (Melanthaxia) Richter, and one species of Melanophila Eschscholtz (Coleoptera: Buprestidae) in the Western United States. One new adult host record is provided for Anthaxia (Melanthaxia) aeneogaster Gory and Laporte, two are provided for Melanophila atropurpurea (Say), and one for Phaenops intrusa (Horn).

On The Paratypes And Distribution Of Hemipeplus Quadricollis Pollock, 1999 (Coleoptera: Mycteridae: Hemipeplinae): Does It Occur In Peru?, Sajan Kc

Insecta Mundi

Hemipeplus quadricollis Pollock, 1999 (Coleoptera: Mycteridae: Hemipeplinae), was originally described from Rondonia State, Brazil, as its type locality, with 10 paratypes: eight from Brazil (Rondonia State) and two from Peru (Madre de Dios and Loreto departments). However, one of the paratypes from Peru (Madre de Dios) was later identified as a cryptic species, Hemipeplus pseudoquadricollis KC and Pollock, 2025. This raises questions about the single remaining paratype from Peru—whether the species truly occurs in Peru—and how many of the paratypes of H. quadricollis are actually H. quadricollis. In this study, all seven remaining paratypes of H. …

A New Species Of Allotriopsis Champion From Guatemala (Coleoptera: Elateridae), E. R. Fuller

Insecta Mundi

Abstract

Allotriopsis schusteri Fuller (Coleoptera: Elateridae), new species, is described from cloud forest habitat in Zacapa Department, Guatemala, and compared with Allotriopsis nasalis Champion from Quezaltenango Department, Guatemala.

Resumen

Se describe Allotriopsis schusteri Fuller (Coleoptera: Elateridae), nueva especie, del hábitat del bosque nuboso en el departamento de Zacapa, Guatemala, y se compara con Allotriopsis nasalis Champion del departamento de Quezaltenango, Guatemala.

Checklist Of The Cerambycidae (Coleoptera) Of Panama, Alfredo Lanuza-Garay, Miguel A. Monné

Insecta Mundi

Abstract

A checklist of the Cerambycidae (Coleoptera) of Panama is provided, including 1,031 species and subspecies distributed in 433 genera, 63 tribes and subtribes, and five subfamilies. In addition, provincial distribution data are provided for each species. The following new country records for Panama are reported: Ischioloncha lineata Bates, 1885 (Panama and Colon Province) (Lamiinae: Apomecynini), Oncideres macra Thomson, 1868 (Panama and Panama Oeste Province), Oncideres minuta Thomson, 1868 (Panama province, San Blas Comarca), Oncideres ochreostillata Dillon and Dillon, 1952 (Barro Colorado Island) (Lamiinae: Onciderini). A new province record is presented for Rileyellus panamensis Wappes and Santo-Silva, 2020 (Darien Province) …

Three New Species Of Lepidocyrtus Bourlet (Collembola: Entomobryidae) From Florida, Usa, And Descriptive Notes On Lepidocyrtus Floridensis Snider, Felipe N. Soto-Adames, Emily Jenks, Kathryn M. Daly

Insecta Mundi

Abstract

In North America, the genus Lepidocyrtus Bourlet (Collembola: Entomobryidae) is represented by 18 species, but only three (L. floridensis Snider, L. millsi Snider, and L. pallidus Reuter) have been reported from Florida. We investigated species diversity in leaf litter samples from counties in the north-central and southern part of the state, as the reportedly low species diversity in Florida may be due to under-sampling. As a result, in this contribution we describe three species of Lepidocyrtus new to science: L. bobwoodruffi Soto-Adames, Jenks and Daly, new species, L. brambilae Soto-Adames, Jenks and …

Descripción De Una Nueva Especie De Tetralicia Harrison (Hemiptera: Aleyrodidae) De Petén, Guatemala, José Francisco García-Ochaeta, Vicente Emilio Carapia-Ruiz

Insecta Mundi

Resumen

Se describe una nueva especie de Aleyrodidae, Tetralicia dubeyi Carapia-Ruiz y García-Ochaeta nueva especie, fue encontrada en el envés de las hojas de Hamelia patens Jacq. (Rubiaceae) en San José, Jobompiche, Petén, Guatemala. Esta nueva especie es incluida en el grupo abnormis del género Tetralicia Harrison. Se ilustran con fotografías las estructuras morfológicas del pupario, se discute la relación con especies cercanas y se proporciona una clave para la identificación de los grupos y especies del grupo abnormis.

Abstract

A new species of Aleyrodidae, Tetralicia dubeyi Carapia-Ruiz y García-Ochaeta new species, was found on the underside of the …

Habitat Definition For Pepsis Elegans Lepeletier (Hymenoptera: Pompilidae: Pepsinae), Frank E. Kurczewski

Insecta Mundi

Recent (2024) photographs of Pepsis elegans Lepeletier (Hymenoptera: Pompilidae: Pepsinae) females searching through plant litter disclosed no clues about its nesting behavior or host spider. However, coupled with geographic site locations, they reveal important habitat information. The various site locations are specifically defined as part of the Eastern Temperate Forests Level I Ecoregion of North America, numerous Level III Ecoregions of the Continental United States, several United States Forest Type Groups, and natural habitat designation of mesic open woodland.

A Taxonomic Note On Lecanium Vaccinii Macrocarpum Nomen Dubium Status, Rhys J. L. Campo, Barbara D. Denno, Douglass R. Miller

Insecta Mundi

Lecanium vaccinii macrocarpum Goethe, 1884 (Hemiptera: Coccidae) is a subspecies of which the original description is inconsistent with its current taxonomic placement, and its recorded synonymy with other species is questionable. The original type material is likely lost or destroyed. For these reasons, L. vaccinii macrocarpum is proposed to be treated as nomen dubium.

New Host Record Of Dahlibruchus Bridwell, 1931 On Cultivated Dahlia Cav. In Mexico And Description Of Two New Species (Coleoptera: Bruchidae), Jesús Romero Nápoles

Insecta Mundi

Dahlibruchus Bridwell is a genus in the family Bruchidae (Coleoptera: Chrysomeloidea) and all species have as host plants species in the genus Dahlia Cav. (Asteraceae). Usually they arrive on hosts when flowers appear and start feeding on nectar and pollen; later females lay eggs on bracts, and a few weeks later the adults emerge. Presently, the genus Dahlibruchus contains three species. The description of two new ones (Dahlibruchus castroi, new species and Dahlibruchus ruizi, new species) brings this number to five. A key to all species is presented. Dahlibruchus conradti Bridwell is recorded for the first …

Descriptions Of Four New Species Of Leptophloeus Casey (Coleoptera: Laemophloeidae) From The United States, Michael C. Thomas, Kyle E. Schnepp

Insecta Mundi

Four new species of Leptophloeus Casey (Coleoptera: Laemophloeidae) are described: L. barbarus Thomas and Schnepp is described from Florida; L. glacialis Thomas and Schnepp is described from Alaska; L. peregrinus Thomas and Schnepp is described from Hawaii; and L. shoshone Thomas and Schnepp is described from Wyoming. Diagnoses and figures are provided for the new species.

A Review Of The Genus Necydalis Linnaeus (Coleoptera: Cerambycidae) From North America With Proposed Subgeneric Reclassification, Daniel Heffern, Tatsuya Niisato, Ronald Alten

Insecta Mundi

All North American species of Necydalis Linnaeus, 1758 (Coleoptera: Cerambycidae) are removed from the nominotypical subgenus with species allocated into four subgenera: Neodalis Niisato new subgenus, Heterodalis Niisato new subgenus, Mesodalis Niisato new subgenus and Necydalisca Plavilstshikov, 1936. Neodalis and Heterodalis are endemic to the Nearctic, whereas Mesodalis and Necydalisca also occur in the Palearctic. Necydalis (Neodalis) copei Niisato, Heffern and Alten new species is described from Nevada, USA. Necydalis californica Linsley, 1940 new status is elevated from a subspecies of N. diversicollis Schaeffer, 1932 to full species status. Male terminalia of all species are …

Living A Lie: The Truth Behind Isohydnocera Curtipennis (Newman) And Other Historically Confused Species Of Phyllobaenus Dejean, With The Description Of The New Genus Neohydnocera (Coleoptera: Cleridae: Clerinae: Hydnocerini: Hydnocerina), John M. Leavengood Jr.

Insecta Mundi

Taxonomic changes in the New World Hydnocerina (Coleoptera: Cleridae: Clerinae: Hydnocer­ini) at the species and genus level are presented. Phyllobaenus suturalis (Klug, 1842) and Hydnocera limbata Spinola, 1844 are designated junior synonyms of P. pallipennis (Say, 1825), new synonymy. Phyllobaenus nigrescens (Schaeffer, 1909) is designated a junior synonym of P. verticalis (Say, 1835), new synonymy. Iso­hydnocera curtipennis (Newman, 1840), P. lineaticollis Spinola, 1844, and Clerus brachypterus Klug, 1842, are re-established as junior synonyms of P. verticalis (Say, 1835), status reinstated, and I. curtipennis is accordingly reassigned to Phyllobaenus Dejean as P. curtipennis …

The First Species Of Prococcophagus Silvestri (Hymenoptera: Aphelinidae) From America North Of Mexico, Zachary Lahey, Alvin M. Simmons, Sharon A. Andreason

Insecta Mundi

Prococcophagus tobiasi (Myartseva) (Hymenoptera: Aphelinidae) is newly recorded from the state of Florida. This represents the first record of the genus Prococcophagus Silvestri in the United States. Amendments are made to the original description based on the newly collected specimens, and the species is placed in the context of the genus based on a phylogenetic analysis of 28S rDNA. The status of the specimens comprising the type series is discussed and notes are made on the unusual coloration exhibited by living specimens.

First Report Of Corn Leafhopper (Hemiptera: Cicadellidae) In The Usa Midwest Suction Trap Network, Doris M. Lagos-Kutz, Isabel Plasencia, Christopher H. Dietrich, Joseph Laforest, Brian Mccornack, Erin Hodgson, Raul T. Villanueva, Nicholas J. Seiter, Anthony M. Mcmechan, Michael S. Crossley, Steven J. Clough

Insecta Mundi

Corn leafhopper, Dalbulus maidis (DeLong and Wolcott) (Hemiptera: Cicadellidae), is native to Central and South America, but invasive in the United States. This species is a threat to corn, Zea mays L., one of the main crops of economic importance in the US, because it is also a vector of three pathogens responsible for corn stunt diseases complex: corn stunt spiroplasma (CSS), maize bushy stunt phytoplasma (MBSP), and maize rayado fino virus (MRFV). Therefore, monitoring the dispersal of this pest is necessary to document its geographic expansion and anticipate the incidence of corn stunt disease. Based on trap catches obtained …

Distributional Records Of False Click Beetles (Coleoptera: Eucnemidae) From Western North Carolina, John M. Leavengood Jr., Robert L. Otto, Mary Kait Brown

Insecta Mundi

Two new state records (North Carolina) and eight total species of false click beetles (Coleoptera: Eucnemidae) are reported from a survey site in western North Carolina. Updated distributions are provided for each species.

Tetraleurodes Gilli (Hemiptera: Sternorrhyncha: Aleyrodidae), A New Whitefly Species On Quercus L. From California, Natalia Von Ellenrieder

Insecta Mundi

Abstract

A new species of Tetraleurodes Cockerell (Hemiptera: Sternorrhyncha: Aleyrodidae), T. gilli, occurring on Quercus L. (Fagaceae) in California is described and illustrated based on its puparium, adults, and nymphs. The puparium of the new species can be recognized from that of other black whiteflies devoid of dorsal wax that occur on oaks by the combination of a filamentous marginal wax fringe as wide as a third to full width of puparium, cephalothoracic setal formula 1 0 1 1, longitudinal suture margined by tubercles, presence of eyespots, a concentric dorsal submarginal fold, ventral spinules medially to legs decreasing …

Aquatic Invertebrate Populations In Roadside Wetlands In Relation To Water Characteristics, Ellen P. Isakson

Journal of Earth and Life Science

The continual habitat destruction and draining of wetland systems makes the need to understand the ecology of roadside wetlands all the more necessary. Roadside wetlands provide valuable habitat to countless aquatic invertebrates, which can provide insight into the health of the wetland system due to their diversity. The objective of this study was to analyze the populations of aquatic invertebrates in roadside wetlands in relation to water characteristics such as pH, salinity, conductivity, water depth and temperature, and dissolved oxygen. This was done by collecting samples of invertebrate populations from roadside wetlands, in addition to data on water quality characteristics …

Examining The Effects Of Songbird Nest Boxes And Habitat On Avian And Arthropod Communities In A Vineyard Ecosystem, Eleanor Macdonald

Cal Poly Humboldt theses and projects

Agricultural expansion threatens biodiversity, but integrating insectivorous birds into vineyard ecosystems may support both conservation and ecosystem services. We tested how nest boxes and habitat composition influence avian and arthropod communities in Napa Valley vineyards using a before-after, control-impact experiment across 20 sites. During the 2023-2024 breeding seasons we conducted avian point counts, sampled key pest and beneficial arthropods, and collected fecal samples from adult and nestling tree swallows (Tachycineta bicolor) and western bluebirds (Sialia mexicana) to detect vineyard pest DNA. Nest boxes significantly increased swallow and bluebird abundance within one year; swallow responses were strongest …

Best Methods For Establishment And Maintenance Of Pollinator Plantings In Highway Rights-Of-Way, Sophia Lopardo

Open Access Master's Theses

This study explores the potential of highway rights-of-way (ROWs) to serve as habitats for native New England grasses and flowering plants, while also enhancing resources essential for native pollinator communities. This project emphasizes the adaptability of regionally native and insect-pollinated wildflowers and grasses to periodically mowed ROWs; the research assesses various establishment methods that are commonly used in new roadside construction. The study aims to evaluate the effectiveness of different establishment methods for developing roadside pollinator meadows within ROW settings, using species richness (separated into forbs, grasses, insect pollinated functional groups), bare ground percentage, and seed mix germination and persistence …

Molecular Mechanisms And Comparative Transcriptomics Of Diapause In Two Corn Rootworm Species (Diabrotica Spp.), Melise C. Lecheta, Chad Nielson, B. Wade French, Emily Nadeau, Nicholas M. Teets

Entomology Faculty Publications

Diapause is a programmed developmental arrest that can occur at any developmental stage depending on species, but the mechanisms that underscore embryonic diapause are poorly understood. Here, we identified molecular mechanisms underscoring distinct phases of diapause in the Diabrotica spp. complex. This species complex in- cludes economically significant agricultural pests, notably the western corn rootworm (WCR) and northern corn rootworm (NCR), which cause major losses in maize production. Rootworms undergo an obligate embryonic diapause to synchronize their life cycles with host plants, and we sequenced transcriptomes from both species at five time points (pre-diapause, diapause initiation, diapause maintenance, diapause termination, …

Bugs In The Flux: Links Between Arthropod Diversity And Spatial Variation Of Soil Respiration In A Temperate Forest, Erin-Darby H. Mcclain

Theses and Dissertations

Soil respiration (Rs) is the largest terrestrial flux of carbon (C) to the atmosphere, with heterotrophic contributions to Rs varying spatially and temporally. While microbes are the primary and most thoroughly studied source of soil heterotrophic respiration (Rh), contributions from higher trophic organisms, including arthropods, are rarely quantified and poorly understood. Arthropod abundance and diversity correspond with variation in soil microclimate, which is influenced by site factors including canopy structure, site productivity, and disturbance. However, the extent to which these site factors influence arthropod abundance and diversity, and consequently, spatial variation in Rs is not known. The objective of our …

Chironomids Shed Light On Organic Matter Dynamics In Macroinvertebrate Communities In Prairie Pothole Lakes In West-Central Minnesota, Usa, Tracey M. Anderson, Sarah G. Winikoff, Michael L. Sorensen, Melissa L. Rudeen

Biology Publications

The Prairie Pothole Region (PPR) in North America is characterized by a high density of wetlands that can range from temporary habitats to small lakes. Much of the PPR has been converted to agriculture resulting in outright habitat loss, eutrophication, sedimentation, introduction of agrochemicals, and the introduction of invasive plants and animals. We compared two prairie pothole lakes, Cottonwood Lake and Page Lake, to assess the functional roles and trophic structure of the macroinvertebrate communities in this highly altered landscape. We collected macroinvertebrate samples from littoral and profundal regions of each lake with an Ekman grab sampler in winters of …

Molecular Characterization Of Fungus-Arthropod Associations, Angie M. Martin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Arthropods, or phylum Arthropoda, are the largest group of animals, accounting for over three quarters of all animal records on NCBI Taxonomy. And yet, only 40% of all deposited sequences on NCBI Nucleotide come from arthropods. Clearly, arthropods are an understudied group of animals: they are small, often drab, and lead lives very alien to our own. Arthropods have chitinous exoskeletons, segmented bodies, and jointed appendages, and include crabs, barnacles, insects, spiders, and millipedes. Since the era of DNA based studies took off in the 1980s, DNA and other small molecules have been integral to our understanding of the Earth …