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A Function Of The Subelytral Chamber Of Tenebrionid Beetles, Con Slobodchikoff, Kim Wisman 2019 Northern Arizona University

A Function Of The Subelytral Chamber Of Tenebrionid Beetles, Con Slobodchikoff, Kim Wisman

Con Slobodchikoff, PhD

1. The subelytral chamber is an air space between the elytra and the dorsum of the abdomen of some Tenebrionid beetles. Postulated functions for the subelytral chamber have been a reduction of transpiratory water loss and a thermal buffer for heat flow from the elytra to the abdomen.

2. We show that there is a significant correlation between water loss and the depth of the subelytral chamber.

3. This implies that the chamber may be a structure that permits the rapid expansion of the abdomen, providing the beetles with a mechanism by which they can quickly drink large quantities of ...


Systematic And Evolutionary Implications Of Parthenogenesis In The Hymenoptera, C. N. Slobodchikoff, Howell V. Daly 2019 Northern Arizona University

Systematic And Evolutionary Implications Of Parthenogenesis In The Hymenoptera, C. N. Slobodchikoff, Howell V. Daly

Con Slobodchikoff, PhD

Two types of parthenogenesis, arrhenotoky and thelytoky, exist in the Hymenoptera. Arrhenotoky, the development of males from unfertilized eggs, is present in all wasps and bees. Thelytoky, the development of diploid females from unfertilized eggs, is present in a few species. Two types of thelytoky, apomixis and automixis, are known. Most thelytokous Hymenoptera are automictic. No meiosis, only mitosis, occurs in apomixis. Meiosis does occur in automixis, allowing crossing-over and segregation of genes. Advantages of thelytoky are that heterotic combinations become fixed, gene loss is reduced, and reproduction requires only a single individual. One advantage of arrhenotoky is that genetic ...


Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington 2019 U.S. Department of Agriculture

Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington

Thomas W. Sappington

Patterns of mating for the European corn borer (Ostrinia nubilalis) moth depend in part on variation in sex‐pheromone blend. The ratio of (E)‐11‐ and (Z)‐11‐tetradecenyl acetate (E11‐ and Z11‐14:OAc) in the pheromone blend that females produce and males respond to differs between strains of O. nubilalis. Populations also vary in female oviposition preference for and larval performance on maize (C4) and non‐maize (C3) host plants. The relative contributions of sexual and ecological trait variation to the genetic structure of O. nubilalis remains unknown. Host‐plant use (13C/14C ratios) and genetic differentiation were ...


Gene Pyramids And The Balancing Act Of Keeping Pests At Bay, Gustavo C. Macintosh 2019 Iowa State University

Gene Pyramids And The Balancing Act Of Keeping Pests At Bay, Gustavo C. Macintosh

Biochemistry, Biophysics and Molecular Biology Publications

Pyramiding R genes is a common strategy used by breeders to enhance resistance and increase durability of resistance in crops. However, the molecular mechanisms that mediate R gene interactions are not known. Kamphuis et al. (2019) analyzed Medicago truncatula plants carrying two genes that confer resistance to bluegreen aphids. They identified a potential phytohormone crosstalk triggered by the combined R gene action in response to aphid feeding that enhances resistance and minimizes R gene-associated fitness costs to the plant.


Neonicotinoid Seed Treatments Of Soybean Provide Negligible Benefits To Us Farmers, Spyridon Mourtzinis, Christian H. Krupke, Paul D. Esker, Adam J. Varenhorst, Nicholas J. Arneson, Carl A. Bradley, Adam M. Byrne, Martin I. Chilvers, Loren Giesler, Ames Herbert, Yuba R. Kandel, Maciej J. Kazula, Catherine Hunt, Laura E. Lindsey, Sean Malone, Daren S. Mueller, Seth Naeve, Emerson Nafziger, Dominic D. Reisig, William J. Ross, Devon R. Rossman, Sally Taylor, Shawn P. Conley 2019 University of Wisconsin-Madison

Neonicotinoid Seed Treatments Of Soybean Provide Negligible Benefits To Us Farmers, Spyridon Mourtzinis, Christian H. Krupke, Paul D. Esker, Adam J. Varenhorst, Nicholas J. Arneson, Carl A. Bradley, Adam M. Byrne, Martin I. Chilvers, Loren Giesler, Ames Herbert, Yuba R. Kandel, Maciej J. Kazula, Catherine Hunt, Laura E. Lindsey, Sean Malone, Daren S. Mueller, Seth Naeve, Emerson Nafziger, Dominic D. Reisig, William J. Ross, Devon R. Rossman, Sally Taylor, Shawn P. Conley

Papers in Plant Pathology

Neonicotinoids are the most widely used insecticides worldwide and are typically deployed as seed treatments (hereafter NST) in many grain and oilseed crops, including soybeans. However, there is a surprising dearth of information regarding NST effectiveness in increasing soybean seed yield, and most published data suggest weak, or inconsistent yield benefit. The US is the key soybean-producing nation worldwide and this work includes soybean yield data from 194 randomized and replicated field studies conducted specifically to evaluate the effect of NSTs on soybean seed yield at sites within 14 states from 2006 through 2017. Here we show that across the ...


New State Records For The Cicada Parasite Beetle Sandalus Petrophya Knoch (Rhipiceridae), Ed Freese 2019 Valparaiso University

New State Records For The Cicada Parasite Beetle Sandalus Petrophya Knoch (Rhipiceridae), Ed Freese

The Great Lakes Entomologist

Abstract: New state records are presented for Sandalus petrophya specimens from Nebraska and Iowa along with the currently known distribution of this beetle species.


Acroneuria Lycorias (Boreal Stonefly, Plecoptera: Perlidae) Emergence Behaviors Discovered In Pinus Strobus Canopy, Hannah Hoff, Jonathan G. Martin, Patrick J. Liesch, Erik R. Olson 2019 Northland College

Acroneuria Lycorias (Boreal Stonefly, Plecoptera: Perlidae) Emergence Behaviors Discovered In Pinus Strobus Canopy, Hannah Hoff, Jonathan G. Martin, Patrick J. Liesch, Erik R. Olson

The Great Lakes Entomologist

Species of Plecoptera, or stoneflies, are known to use vertical emergence supports, and researchers believe many species of Plecoptera exploit arboreal habitats during emergence. However, the exact nature of these arboreal behaviors has largely remained a mystery. While exploring the habitat potential of Pinus strobus (L.) (Eastern White Pine) canopies in northern Wisconsin we observed Acroneuria lycorias (Newman) (Boreal Stonefly, Plecoptera: Perlidae) exuviae at heights as high as 12m (observations at 6.6, 9, 9.5, and 12m). Most A. lycorias exuviae appeared to have a strong preference for emergence sites at the underside or base of branches similar to ...


A Five-Year Study Of The Flying Beetles (Coleoptera) From A Grassland And An Adjacent Woods In Southern Québec (Canada), Claire Levesque, Gilles-Yvon Levesque 2019 independent researcher

A Five-Year Study Of The Flying Beetles (Coleoptera) From A Grassland And An Adjacent Woods In Southern Québec (Canada), Claire Levesque, Gilles-Yvon Levesque

The Great Lakes Entomologist

During the entire snow-free season (April or May to October) in 2006-2010, we collected with four flight interception traps a total of 34 629 individuals of 848 Coleoptera species belonging to 60 families in southern Québec (Canada). We catched mainly phytophagous and zoophagous beetles. The majority of species (621 or 73,2%) were represented by less than 10 adults over the five years; however, we collected at least 100 adults for 48 species, including four major species: Meligethes nigrescens Stephens (15,9% of the total catches), Longitarsus luridus (Scopoli) (10,6%), Eusphalerum pothos (Mannerheim) (9,1%) and Acidota subcarinata Erichson ...


Use Of Nest And Pollen Resources By Leafcutter Bees, Genus Megachile (Hymenoptera: Megachilidae) In Central Michigan, Michael F. Killewald, Logan M. Rowe, Kelsey K. Graham, Thomas J. Wood, Rufus Isaacs 2019 Michigan State University

Use Of Nest And Pollen Resources By Leafcutter Bees, Genus Megachile (Hymenoptera: Megachilidae) In Central Michigan, Michael F. Killewald, Logan M. Rowe, Kelsey K. Graham, Thomas J. Wood, Rufus Isaacs

The Great Lakes Entomologist

Many landscapes throughout the Great Lakes region have experienced reductions in floral and nesting resources for bees. Identifying the resources used by bees in the family Megachilidae can be used to inform conservation programs that aim to support this group. In this study, we identified the preferred nesting substrate and size, as well as the proportion of distinct pollen types used for offspring provisioning by Megachile species. A total of 39 completed artificial nesting tubes were collected between July 25 and August 30, 2016. A majority of completed nests were in 4 mm diameter tubes. However, more 6 mm and ...


Historical Population Increases And Related Inciting Factors Of Agrilus Anxius, Agrilus Bilineatus, And Agrilus Granulatus Liragus (Coleoptera: Buprestidae) In The Lake States (Michigan, Minnesota, And Wisconsin), Robert A. Haack, Toby Petrice 2019 USDA Forest Service

Historical Population Increases And Related Inciting Factors Of Agrilus Anxius, Agrilus Bilineatus, And Agrilus Granulatus Liragus (Coleoptera: Buprestidae) In The Lake States (Michigan, Minnesota, And Wisconsin), Robert A. Haack, Toby Petrice

The Great Lakes Entomologist

Three native species of tree-infesting Agrilus have regularly reached outbreak levels in the Lake States (Michigan, Minnesota, and Wisconsin), including A. anxius Gory (bronze birch borer), A. bilineatus (Weber) (twolined chestnut borer), and A. granulatus liragus Barter & Brown (bronze poplar borer). The main host trees for these Agrilus are species of Betula for A. anxius, Castanea and Quercus for A. bilineatus, and Populus for A. granulatus liragus. Based on 197 annual forest health reports for Michigan (1950–2017, 66 years), Minnesota (1950–2017, 64 years), and Wisconsin (1951–2017, 67 years), A. bilineatus was the most often reported Agrilus species in all three states (mentioned in 90 annual reports), with A. anxius second (71 reports) and A. granulatus liragus third (21 reports). Drought was the most commonly reported inciting factor for outbreaks of all three Agrilus species, with defoliation events ranking second. The top two defoliators reported as inciting outbreaks of each species were, in decreasing order, Fenusa pumila Leach (Hymenoptera: Tenthredinidae; birch leafminer) tied with Malacosoma disstria Hübner (Lepidoptera: Lasiocampidae; forest tent caterpillar) for A. anxius; M. disstria and Alsophila pometaria (Harris) (Lepidoptera: Geometridae; fall cankerworm) for A. bilineatus; and M. disstria and Choristoneura conflictana (Walker) (Lepidoptera: Tortricidae; large aspen tortrix) for A. granulatus liragus. Other environmental factors occasionally listed as inciting Agrilus outbreaks included late spring frosts, ice storms, and strong wind events.


First Records Of The Adventive Pseudoanthidium Nanum (Mocsáry) (Hymenoptera: Megachilidae) In Illinois And Minnesota, With Notes On Its Identification And Taxonomy, Zachary M. Portman, Skyler J. Burrows, Terry Griswold, Mike Arduser, Aaron J. Irber, Rebecca K. Tonietto, Daniel P. Cariveau 2019 University of Minnesota

First Records Of The Adventive Pseudoanthidium Nanum (Mocsáry) (Hymenoptera: Megachilidae) In Illinois And Minnesota, With Notes On Its Identification And Taxonomy, Zachary M. Portman, Skyler J. Burrows, Terry Griswold, Mike Arduser, Aaron J. Irber, Rebecca K. Tonietto, Daniel P. Cariveau

The Great Lakes Entomologist

We report the first records of Pseudoanthidium nanum (Mocsáry) in Illinois and Minnesota in 2016 and 2018, respectively. This represents a relatively rapid expansion since P. nanum was first detected in New Jersey in 2008. In order to help monitor the spread of this bee, we provide information on how to identify P. nanum and provide images of the general habitus, diagnostic features, and male genitalia. Finally, we confirm the taxonomic identity of P. nanum in the United States and highlight potential impacts on native anthidiines.


The Discovery Of Trissolcus Japonicus (Hymenoptera: Scelionidae) In Michigan, Benjamin J. M. Jarrett, John Pote, Elijah Talamas, Larry Gut, Marianna Szucs 2019 Michigan State University

The Discovery Of Trissolcus Japonicus (Hymenoptera: Scelionidae) In Michigan, Benjamin J. M. Jarrett, John Pote, Elijah Talamas, Larry Gut, Marianna Szucs

The Great Lakes Entomologist

The invasive brown marmorated stink bug, Halyomorpha halys (Stål), is a pest of growing economic importance in the United States, the control of which currently relies on pesticide applications. Biological control could provide sustainable and long-term control but classical biological control agents have not yet been approved. Adventive populations of a potential biological control agents, the Samurai wasp, Trissolcus japonicus (Ashmead), have been found in the United States, first in Maryland in 2014, expanding its range west to Ohio by 2017. Trissolcus japonicus is a highly effective parasitoid of H. halys eggs, but its redistribution and augmentative releases are restricted ...


Epeoloides Pilosulus (Cresson) Rediscovered In Michigan, With Notes On The Distribution And Status Of Its Macropis Hosts., Thomas J. Wood, Michael F. Killewald, Kelsey K. Graham, Jason Gibbs, Rufus Isaacs 2019 Michigan State University

Epeoloides Pilosulus (Cresson) Rediscovered In Michigan, With Notes On The Distribution And Status Of Its Macropis Hosts., Thomas J. Wood, Michael F. Killewald, Kelsey K. Graham, Jason Gibbs, Rufus Isaacs

The Great Lakes Entomologist

Epeoloides pilosulus (Cresson 1878) is one of the rarest bees in North America with only a handful of records since 1960. The last collection in Michigan was made in 1944. Epeoloides pilosulus is a brood parasite of Macropis bees, which until recently had not been collected in Michigan for several decades. Bee surveys in Midland County, Michigan have led to the rediscovery of E. pilosulus in this state – the first record in 74 years. Michigan becomes the fourth state where E. pilosulus has been rediscovered after Connecticut in 2006, New York in 2014 and Maine in 2016, and the sixth ...


Cover Pages, 2019 Valparaiso University

Cover Pages

The Great Lakes Entomologist

Cover pages for TGLE Vol. 52 Nos. 1 & 2


Cover Art, 2019 Valparaiso University

Cover Art

The Great Lakes Entomologist

Cover art for TGLE Vol. 52 Nos. 1 & 2


Tgle Vol. 52 Nos. 1 & 2 Full Issue, 2019 Valparaiso University

Tgle Vol. 52 Nos. 1 & 2 Full Issue

The Great Lakes Entomologist

Full issue for TGLE Vol. 52 Nos. 1 & 2


Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington 2019 U.S. Department of Agriculture

Influence Of Host Plant, Geography And Pheromone Strain On Genomic Differentiation In Sympatric Populations Of Ostrinia Nubilalis, Brad S. Coates, Genevieve M. Kozak, Kyung Seok Kim, Jing Sun, Yangzhou Zhang, Shelby J. Fleischer, Erik B. Dopman, Thomas W. Sappington

Entomology Publications

Patterns of mating for the European corn borer (Ostrinia nubilalis) moth depend in part on variation in sex‐pheromone blend. The ratio of (E)‐11‐ and (Z)‐11‐tetradecenyl acetate (E11‐ and Z11‐14:OAc) in the pheromone blend that females produce and males respond to differs between strains of O. nubilalis. Populations also vary in female oviposition preference for and larval performance on maize (C4) and non‐maize (C3) host plants. The relative contributions of sexual and ecological trait variation to the genetic structure of O. nubilalis remains unknown. Host‐plant use (13C/14C ratios) and genetic differentiation were ...


The Evolution Of Spinosad Resistance In Colorado Potato Beetles (Leptinotarsa Decemlineata), Coby Michael Klein 2019 The Graduate Center, City University of New York

The Evolution Of Spinosad Resistance In Colorado Potato Beetles (Leptinotarsa Decemlineata), Coby Michael Klein

All Dissertations, Theses, and Capstone Projects

Colorado potato beetles (Leptinotarsa decemlineata) are a major pest of cultivated potato plants worldwide. They are well-known for their ability to rapidly evolve resistance to all major classes of pesticides. Defoliation of potato plants by L. decemlineata can reduce potato yields by a considerable margin. The damage done by resistant beetles is steep and much research is focused on developing new chemical controls, especially those derived from naturally occurring compounds. Spinosad is a relatively new natural product insecticide, introduced approximately a decade ago, suitable for use in organic farming. Potato beetles on Long Island, NY developed very strong resistance to ...


Assessing Cp - 42 Habitat Value For Bees Using The Floral Resource Index, Allison Eagan, Gabrielle Brown, Ai Wen 2019 University of Northern Iowa

Assessing Cp - 42 Habitat Value For Bees Using The Floral Resource Index, Allison Eagan, Gabrielle Brown, Ai Wen

Summer Undergraduate Research Program (SURP)

Background
--Prairies once dominated 85% of Iowa but that large portion has been reduced drastically to 0.01%. Agriculture expansion is largely to blame for the shocking percent change. [1]
--The Conservation Reserve Program (CRP), administered by the US Department of Agriculture’s Farm Service Agency, aims to conserve land, improve water quality, create wildlife habitat, and prevent soil erosion. In 2011, the CP-42 program was launched specifically as a Pollinator Habitat Initiative for forbs and grasses to be planted to increase pollinator habitat. The goals of the CP-42 plantings are for at least nine wildflower species to be found ...


Sown And Unsown Floral Resources Both Support Bee Abundance, Pryce Johnson, Kenneth Elgersma, Ai Wen 2019 University of Northern Iowa

Sown And Unsown Floral Resources Both Support Bee Abundance, Pryce Johnson, Kenneth Elgersma, Ai Wen

Summer Undergraduate Research Program (SURP)

Introduction:
• Decrease in wild bees are linked to loss of prairie and floral resources.1
• The USDA’s Farmers Service Association started a pollinator habitat initiative called CP-42 within the Conservation Reserve Program (CRP).
• Program goals include preservation of wildlife and maintaining native landscapes. • We evaluated success of the program by measuring vegetation density and pollinator habitat quality, along with bee abundance in June and July of 2019.
• We measured bee abundance and compared it to floral resources of planted (sown) species and unplanted (unsown) species.
• This comparison shows if current seed mixes are promoting pollinators better than weeds.


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