Entomology Commons^™

Letter From The Dean, Michael Vayda

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Economic Impact Of Stable Flies (Diptera: Muscidae) On Dairy And Beef Cattle Production, David B. Taylor, Roger D. Moon, Darrell R. Mark

Department of Agricultural Economics: Faculty Publications

Stable flies, Stomoxys calcitrans (L.), are among the most damaging arthropod pests of cattle worldwide. The last estimate of their economic impact on United States cattle production was published 20 yr ago and placed losses at $608 million. Subsequently, several studies of effects of stable flies on beef cattle weight gain and feed efficiency have been published, and stable flies have become increasingly recognized as pests of cattle on pasture and range. We analyzed published studies and developed yield-loss functions to relate stable fly infestation levels to cattle productivity, and then estimated the economic impact of stable flies on cattle …

Seed Reduction In Prairie Cordgrass, Spartina Pectinata Link., By The Floret-Feeding Caterpillar Aethes Spartinana (Barnes And Mcdunnough), Jarrad R. Prasifka, D. K. Lee, Jeffrey Bradshaw, Allen S. Parrish, Michael E. Gray

Panhandle Research and Extension Center

Insect damage to prairie cordgrass, Spartina pectinata Link., is conspicuously high in Illinois, where attempts to collect native seed show the majority of spikelets damaged with small holes. Dissection of spikes during summer reveals minute caterpillars boring though glumes and feeding on florets inside. In 2009–2010, panicles of prairie cordgrass from across its native range were used to estimate the percentage of insect-related damage and losses to seed production. Collections of caterpillars from panicles and stems were used to identify one floret-feeding species, estimate its distribution in the central USA, and assess its feeding patterns within spikes. Insect feeding damaged …

Notes On Notonectidae (Hemiptera: Heteroptera) From Southeastern Asia, Mostly From Brunei And The Philippines, Hendrik Freitag, Herbert Zettel, David J.W Lane, Clister V. Pangantihon

Biology Faculty Publications

Updated distribution data are presented for the following species of Notonectidae (Heteroptera) in southeastern Asia: Anisops breddini Kirkaldy, 1901, A. kuroiwae Matsumura, 1915, A. nasutus Fieber, 1851, A. nigrolineatus Lundblad, 1933, A. occipitalis Breddin, 1905, A. rhomboides Nieser & Chen, 1999, A. stali Kirkaldy, 1904, Aphelonecta philippina Zettel, 1995, Enithares bakeri Brooks, 1948, E. freyi Brooks, 1948, E. intha Paiva, 1918, E. mandalayensis Distant, 1910, E. martini martini Kirkaldy, 1898, E. quadrispinosa Lansbury, 1967, E. sinica (Stål, 1854), E. subparallela Lansbury, 1968, E. uncata Lundblad, 1933, E. cf. vicintricata Lansbury, 1968, and Nychia sappho Kirkaldy, 1901. There are six fi …

Digital Microscopic Imaging Of Important Taxonomic Characters Of Philippine Hydraena (Hydraenopsis) Species, Hendrik Freitag

Biology Faculty Publications

Biodiversity surveys have revealed several new aquatic beetle species of minute size (0.9 mm to 1.8 mm body length). Following modern standards of morphological taxonomy, internal and external microstructures such as aedeagus, ovipositor, spermatheca, gonocoxite as well as the distribution pattern and shape of certain hair structures were used to illustrate the distinguishing characters of new species. As even the smallest diaphragm opening of light microscopes fails to retrieve images of sufficient depth of the field, light microscope images under ZEISS Primo Vert inverted microscope, equipped with ZEISS LD Plan-ACHROMAT 20X objective lens, and an OLYMPUS SZ 61 stereomicroscope, were …

On-Plant Movement And Feeding Of Western Bean Cutworm (Lepidoptera: Noctuidae) Early Instars On Corn, Silvana L. Vieira De Paula Moraes, Thomas E. Hunt, Robert J. Wright, Gary L. Hein, Erin E. Blankenship

Department of Entomology: Faculty Publications

Western bean cutworm, Striacosta albicosta (Smith), has undergone a recent eastward expansion from the western United States Corn Belt to Pennsylvania and parts of Canada. Little is known about its ecology and behavior, particularly during the early instars, on corn (Zea mays L.). There is a narrow treatment window for larvae, and early detection of the pest in the field is essential. An understanding of western bean cutworm larval feeding and early-instar dispersal is essential to understand larval survival and establishment in corn. Studies were conducted in 2009 through 2011 in Nebraska to determine the feeding and dispersal of …

Distribution Of Genes And Repetitive Elements In The Diabrotica Virgifera Virgifera Genome Estimated Using Bac Sequencing, Brad S. Coates, Analiza P. Alves, Haichuan Wang, Kimberly K. O. Walden, B. Wade French, Nicholas J. Miller, Craig A. Abel, Hugh M. Robertson, Thomas W. Sappington, Blair D. Siegfried

Department of Entomology: Faculty Publications

Feeding damage caused by the western corn rootworm, Diabrotica virgifera virgifera, is destructive to corn plants in North America and Europe where control remains challenging due to evolution of resistance to chemical and transgenic toxins. A BAC library, DvvBAC1, containing 109,486 clones with 104 ± 34.5 kb inserts was created, which has an ~4.56X genome coverage based upon a 2.58 Gb (2.80 pg) flow cytometry-estimated haploid genome size. Paired end sequencing of 1037 BAC inserts produced 1.17Mb of data (~0.05% genome coverage) and indicated ~9.4 and 16.0% of reads encode, respectively, endogenous genes and transposable elements (TEs). …

Splendid Hybrids: The Effects Of A Tiger Beetle Hybrid Zone On Apparent Species Diversity, Mathew L. Brust, W. Wyatt Hoback, Stephen M. Spomer

Department of Entomology: Faculty Publications

Nonexpert citizen groups are being used to monitor species to track ecosystem changes; however, challenges remain for proper identification, especially among diverse groups such as beetles. Tiger beetles, Cicindela spp., have been used for biological diversity monitoring because of their diversity and the ease of recognition. The finding of an apparent hybrid zone among Cicindela denverensis Casey, Cicindela limbalis Klug, and Cicindela splendida Hentz in central Nebraska prompted a detailed study of the biogeography of this species group within Nebraska, a test of characteristics that could be used by citizen scientists, and limited breeding experiments. This study suggests that while …

Bean Leaf Beetle And Soybean Aphid Control Using Foliar Treatments In A Certified-Organic Operation—Neely-Kinyon Trial, 2010-2011, Andrea Mckern

Department of Entomology: Distance Master of Science Projects

Summary of Project

Goal: The goal of this project is to find effective management treatments for the bean leaf beetle (Cerotoma trifurcata) and soybean aphid (Aphis glycines) for use in certified-organic soybeans. The bean leaf beetle is one of the major vectors of bean pod mottle virus, which causes seed staining and can cause a downgrading of the soybeans at market from food grade to feed grade. Feeding from the soybean aphid causes stunted plants, reduced pods and seeds, and can transmit viruses that cause mottling and distortion of the leaves and a reduced seed set. …

Population Structuring And Transmission Dynamics Of A Laboratory Colony Of Gromphadorholaelaps Schaeferi: A Symbiotic Mite Of The Madagascar Hissing Cockroach Gromphadorhina Portentosa, D. J. Richardson

Journal of the Arkansas Academy of Science

Gromphadorholaelaps schaeferi is a symbiotic mite associated with the Madagascar hissing cockroach Gromphdorhina portentosa. The population structuring of G. schaeferi is described based on examination of 19,421 mites collected from 1,915 individuals of G. portentosa taken from a large laboratory colony. The mites exhibited an overall prevalence of 50.7% and mean intensity (+SE) of 20.0 (+0.6) with an infestation intensity range of 1-116, and relative abundance (+SE) of 10.1 (+0.4). Both prevalence and mean intensity of infestation exhibited a dramatic increase with increasing cockroach size/age. By the time cockroaches reach 40 mm the prevalence is nearly 100%. Mean intensity increases …

New Geographic Distribution Records For Horsehair Worms (Nematomorpha: Gordiida) In Arkansas, Including New State Records For Chordodes Morgani And Paragordius Varius, H. W. Robison, C. T. Mcallister, B. Hanelt

Journal of the Arkansas Academy of Science

No abstract provided.

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 13 2012, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Biology Department Newsletter, No.2, Sacred Heart University

Biology Newsletter

No abstract provided.

Nebline, January 2012

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: UNL Food Processing Center Provides Valuable Assistance to Food Manufacturers

Farm Views

Urban Agriculture

Food & Fitness

Home & Family Living

Horticulture

Environmental Focus

4-H & Youth

Community Focus

Extension Calendar

Nutrition Education Program

Family and Community Education (FCE) Clubs

and other extension news and events

2011 Annual Report Special Pullout Section

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Effects Of Methoprene On The Survivorship Of Adult Aedes Mosquitoes: A Strategy Or Inactivating Released Mosquitoes, Peter J. Brabant Iii

Theses and Dissertations--Entomology

Methoprene is a Juvenile Hormone (JH) analogue commonly used for the control of mosquito larvae. When applied to a mosquito breeding site, methoprene enters the haemolymph, where it mimics the function of JH and interferes with normal metamorphosis, resulting in larval mortality. Methoprene is commonly used for the control of larvae and has not been used as an adulticide, due to an absence of acute effects. This study evaluated possible chronic effects caused by the exposure of adult Aedes mosquitoes to methoprene. Methoprene was applied, in both technical grade and the commercially available Altosid®, topically to adults through droplet application …

Invertebrate Abundances And Diversity Of A Six Year Old Organic Apple Orchard In Northwest Arkansas, Cory Johnson, Brina Smith, Mary C. Savin

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Ground cover mulch applications in perennial systems can have multiple benefits, one of which may be to enhance the size and diversity of the ground surface faunal community. To determine if ground cover and organic fertilizer applications altered invertebrate communities, litters in an experimental 0.4-ha organic apple orchard in Fayetteville, Ark. were sampled during a four week period beginning in February 2012. The orchard was planted in 2006 in a replicated 4 × 3 factorial design with organic ground cover and fertilizer treatments applied annually each April. Invertebrates were extracted using Berlese funnels and hand sorting techniques. Ground covers (wood …

Externally-Expressed Fluorescence Across Sexes, Life Stages, And Species Of Spiders, Erin Brandt

Dissertations and Theses

Although all spiders possess fluorophores in their hemolymph, the expression of external fluorescence is much more restricted. The purpose of this study was to evaluate differences in externally-expressed fluorescence between sexes, life stages, and species of spiders. To approach this question, we developed novel instrumentation to capture fluorescence with photographs of our specimens. We paired these fluorescence measurements with spectrometer measurements to attempt to determine the role that fluorescence plays in the overall coloration in spiders. The study was divided into four sections. First, we examined how fluorescence varies in sexes and life stages in Misumena vatia, an ambush predator …

Integrated Management Of The Red Imported Fire Ant In Pastures, William Sullivan Hilbun

LSU Master's Theses

The effects and interactions of chemical, cultural, and biological control of red imported fire ant (RIFA) populations were evaluated in two replicated studies in pastures. The first study was conducted from 2005 through 2007 in Washington parish, Louisiana (WP) where the biological control Psuedacteon tricupsis phorid flies were present and at the LSU AgCenter St. Gabriel Research Station in St. Gabriel, Louisiana (SG) where Psuedacteon tricuspis flies were absent. The second study was conducted from May 2009 to May 2010 at St. Gabriel in the presence of phorid flies. In both studies, RIFA population indices in sites treated with methoprene …

The Effects Of Spinosad On Culex Quinquefasciatus (Diptera: Culicidae) And Non-Target Insect Species, Owen Mcbride Jones

LSU Master's Theses

Spinosad is a relatively new insecticide with a unique mode of action that is being evaluated for control of larval mosquitoes. Whereas a number of toxicological studies have measured effects of spinosad on various mammals, fish, birds, and terrestrial arthropods, fewer studies have been conducted on the effects of spinosad on non-target aquatic insect species. Such studies are important as these species might be found in the same environments as mosquito larvae targeted for control. A neighborhood pond was surveyed to find a representative species of mosquito as well as other common aquatic insects with which to examine susceptibility to …

Following The Trail Of Ants: An Examination Of The Work Of E.O. Wilson, Samantha Kee

Writing Across the Curriculum

No abstract provided.

Assessment Of Stink Bug Feeding Damage In Louisiana Soybean: Use Of A No-Choice Feeding Field Protocol, Jessica Leigh Parker

LSU Master's Theses

Numerous arthropods are pests of soybean in the subtropical environment of Louisiana. The most important pod-feeding guild includes a complex of stink bugs (Hemiptera: Pentatomidae). One of these species, redbanded stink bug (Piezodorus guildinii [Westwood]), has emerged as a significant pest in Louisiana soybean. Currently, limited information is available describing soybean plant injury from this pest in the United States or compares injury relative to native stink bugs. Therefore, a field protocol was modified to assess injury to soybean seeds. Studies conducted in Louisiana during 2009-2011 used procedures to isolate the effects of infestation duration (24-96 h after infestation [HAI]) …

Evaluating The Efficacy Of Methoxyfenozide On Louisiana, Texas And The Mid-Southern Soybean Looper Populations, Sebe Anthony Brown

LSU Master's Theses

The soybean looper, Chrysodeixis includens (Walker), is a defoliating insect pest of soybean in the Mid-South and Texas. In 2008, Louisiana producers reported unsatisfactory control of soybean loopers in soybean with methoxyfenozide. In 2009 and 2010, field collections from Louisiana, Missouri, Mississippi and Texas were exposed to discriminating concentrations (0.020 to 5.000 ai ìg/ml) of methoxyfenozide in diet incorporation bioassays. All field colonies were compared to a reference strain LC50 of 0.007 ìg/ml for 2009 and 0.008 ìg/ml for 2010. Louisiana populations exhibited LC50’s of 0.079 ìg/ml and 0.122 ìg/ml for 2009 and 2010, respectively, which were the highest values …

New Geographic Distribution Records For Centipedes (Chilopoda: Scolopendromorpha) In Arkansas, Including The First From Crowley's Ridge And The Grand Prairie, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior

Journal of the Arkansas Academy of Science

No abstract provided.

Gene Expression Profiling In The Thiamethoxam Resistant And Susceptible B-Biotype Sweetpotato Whitefly, Bemisia Tabaci, Wen Xie, Xin Yang, Shao-Ii Wang, Qing-Jun Wu, Ni-Na Yang, Ru-Mei Li, Xiao-Guo Jiao, Hui-Peng Pan, Bai-Ming Liu, Yun-Tao Feng, Bao-Yun Xu, Xuguo Zhou, You-Jun Zhang

Entomology Faculty Publications

Thiamethoxam has been used as a major insecticide to control the B-biotype sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae). Due to its excessive use, a high level of resistance to thiamethoxam has developed worldwide over the past several years. To better understand the molecular mechanisms underlying this resistance in B. tabaci, gene profiles between the thiamethoxam-resistant and thiamethoxam-susceptible strains were investigated using the suppression subtractive hybridization (SSH) library approach. A total of 72 and 52 upand down-regulated genes were obtained from the forward and reverse SSH libraries, respectively. These expressed sequence tags (ESTs) belong to several functional categories based …

Enabling Learning And Enhancing Education In Ipm In The Midst Of Dwindling Financial Resources: Why Open Access To Resources And Publishing Could Be A Strategic Step To Support Students Today And Tomorrow?, Ousmane Youm

Department of Entomology: Faculty Publications

When I was invited to join the editorial board of the journal Entomology, Ornithology & Herpetology (EOH), I read carefully the note coming with the invitation and also looked at the content and scope. Then two things came into my mind as I stopped a few minutes to reflect on a couple of issues: (1) how the new journal links and is relevant to Integrated Pest Management—IPM (for those who understand its definition)—and (2) the issue of open access and relevance in the current situation of an ailing global economy, particularly in the vulnerable developing nations.

In the latter, more …

A Review Of The Distribution Of Harposcelis Paradoxus Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini) With A New Country Record For Peru, Jochen-P. Saltin, Brett C. Ratcliffe

Department of Entomology: Faculty Publications

Harposcelis paradoxus Burmeister is a relatively rare lowland species that, for a long time, was known only from French Guiana (Blackwelder 1944; Endrödi 1966, 1985; Krajcik 2005). Males are more commonly collected than females and are now commonly available via the Internet from commercial dealers in the insect trade. At a body length of 40 mm, this is a remarkably large species for a member of the tribe Cyclocephalini. Males are distinctive because of their long, curved protibiae and anterior trochanter with a large, anteriorly projecting tooth. The genus can be identified in keys by Endrödi (1966, 1985), Ratcliffe (1985), …

Breeding Biology And Bee Guild Of Douglas’ Dustymaiden, Chaenactis Douglasii (Asteraceae, Helenieae), James H. Cane, Byron Love, Katharine A. Swoboda-Bhattarai

Department of Entomology: Faculty Publications

Douglas’ dustymaiden, Chaenactis douglasii (Hook.) Hook. & Arn., is a widespread, inconspicuous, short-lived perennial wildflower that blooms in early summer and is found in basin sagesteppe to upper montane areas throughout the U.S. Intermountain West. The species is proving practical to grow for seed and is expected to be used for western rangeland rehabilitation. Through manual pollination experiments, C. douglasii was found to be only weakly self-fertile; 15% of flowers from geitonogamy and autogamy treatments yielded filled achenes. In contrast, 57% of outcrossed flowers produced achenes filled with endosperm, with every capitulum yielding some fertile seeds. Freely visited flowers from …

Arthur F. Hagen Obituary, Robert J. Wright

Department of Entomology: Faculty Publications

Arthur F. Hagen, 84, died Thursday, 26 July 2012 at the Community Hospital in Torrington, Wyoming.

Art was born 4 February 1928 in Huron, South Dakota, the son of Merle and Leona (Geuther) Hagen. He grew up and received his early education in Huron and Armour, SD. Art entered the U.S. Navy, where he spent four years as an aviation electrician and was discharged in 1949. He married Marlene Halstead on 23 March 1954 in Wagner, SD. Art attended college at Colorado Agricultural and Mechanical College (now Colorado State University) where he received his B.S. in 1954 and his master’s …