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Full-Text Articles in Life Sciences

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 2, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 2, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 1, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 1, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 5, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 5, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 3, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 3, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 4, Robert E. Woodruff, Milton W. Sanderson Dec 2004

Revision Of The Phyllophaga Of Hispaniola (Coleoptera: Scarabaeidae: Melolonthinae) — Part 4, Robert E. Woodruff, Milton W. Sanderson

Insecta Mundi

With this study, the fauna of Hispaniolan Phyllophaga is now composed of 48 species, all of which are endemic (precinctive), including 22 new species described herein (4 attributed to Woodruff and Sanderson: approxima, bonfils, jimenezi, rex; 18 to Woodruff: aceitillar, alcoa, androw, baoruco, carnegie, davidsoni, eladio, haitiensis, jaragua, larimar, marcano, nunezi, ortizi, pedernales, rawlinsi, rustica, santachloe, toni). Additionally, allotypes are described for 7 species with previously unknown males (aliada, canoa) or females (esquinada, fossoria, imprima, kenscoffi, panicula), and 6 new country records (Dominican Republic) are provided (aliada, leptospica, minutissima, panicula, permagna, recorta). Of the 48, only 1 male remains unknown ...


Commercial Pesticide Applicator Training Sessions For Spring 2005, James A. Fawcett, Virgil L. Schmitt Dec 2004

Commercial Pesticide Applicator Training Sessions For Spring 2005, James A. Fawcett, Virgil L. Schmitt

Integrated Crop Management News

With the arrival of Asian soybean rust in this country, many commercial applicators are adding agricultural diseases (category 1C) to their certification so that they can apply fungicides. Most agricultural commercial applicators are certified in Ag Weeds (category 1A), and many are certified in Ag Insects (category 1B), but not very many are certified in Ag Diseases (category 1C).


Marketing Opportunities For Organic And Non-Gmo Crops, Kathleen Delate, Robert Turnbull, Jerry Dewitt Dec 2004

Marketing Opportunities For Organic And Non-Gmo Crops, Kathleen Delate, Robert Turnbull, Jerry Dewitt

Proceedings of the Integrated Crop Management Conference

According to the USDA Economic Research Service, Iowa ranks fifth in the U.S. in terms of organic production acres (USDA-ERS, 2004). The U.S. organic industry continues to grow at a rate of 20% annually (OTA, 2004) and is currently a $13 billion industry. Projected growth puts U.S. organic sales at $20 billion by 2006. There were approximately 100,000 acres of organic production reported to the Iowa Department of Agriculture and Land Stewardship (IDALS, 2003). This figure reflects only acreage reported by those farmers who returned their survey; thus, more acres are believed to go unreported. This ...


Soybean Aphid Management Update: What To Select From A Variety Of Pest Management Tools?, Matt O'Neal, Kevin Johnson Dec 2004

Soybean Aphid Management Update: What To Select From A Variety Of Pest Management Tools?, Matt O'Neal, Kevin Johnson

Proceedings of the Integrated Crop Management Conference

Soybean aphid experience in Iowa: Like most of the Midwest, Iowa soybean growers were introduced to a new pest when the soybean aphid, Aphis glycines Matsumura (Homoptera: Aphididae), arrived in 2000. And like many other states, Iowa has experienced large populations of aphids (>2,000/plant) in two of the past five years that the aphid has been in the state (Lang 2003, M. O'Neal unpublished). Although not well understood, there is an apparent oscillation in aphid populations between years with large populations occurring in 2001 and 2003, and low populations (<500 aphids per plant) occurring in 2002 and 2004.


Pesticide Use And Water Quality, Rich Pope, Mary Skopec, Jim Ellerhoff Dec 2004

Pesticide Use And Water Quality, Rich Pope, Mary Skopec, Jim Ellerhoff

Proceedings of the Integrated Crop Management Conference

Understanding use rates and use patterns of pesticides is valuable to the agricultural industry for manufacturers, registrants, regulatory agencies, environmental interests and pesticide end-users. There are several sources of data, including surveys of pesticide users, monitoring of pesticide detections in the environment, and indirect measures including tracking pesticide sales. The Iowa Groundwater Protection Act of 1987 directed the Iowa Department of Agriculture and Land Stewardship (IDALS) to collect pesticide sales data from pesticide dealers. The dollar sales data, which is confidential business information, is being used to calculate approximate pounds of active ingredients for pesticides which might impact surface or ...


The Neonicotinoid Insecticides - Insect Management With Seed Treatments In Corn, Marlin E. Rice Dec 2004

The Neonicotinoid Insecticides - Insect Management With Seed Treatments In Corn, Marlin E. Rice

Proceedings of the Integrated Crop Management Conference

Com producers battle a variety of soil dwelling insect pests. Seedcorn maggots, wireworms, white grubs and several species of cutworms can attack either the seed or seedling plants and reduce the plant stand. Corn rootworm larvae feed on corn roots during midsummer and can significantly reduce the uptake of moisture and nutrients. Extensive feeding by com rootworm larvae can reduce the roots to a point where wind causes the plants to lodge. Lodged plants slow harvest and grain yields can be reduced from both the root injury and the lodging.


Eastern Movement Of The Western Bean Cutworm, Marlin E. Rice, David Dorhout, Rich Pope Dec 2004

Eastern Movement Of The Western Bean Cutworm, Marlin E. Rice, David Dorhout, Rich Pope

Proceedings of the Integrated Crop Management Conference

The western bean cutworm, Richia albicosta (Lepidoptera: Noctuidae) is native to North America. It was first reported as a pest of Colorado pinto beans in 1915 and later, in 1954, it was identified as pest of corn in southern Idaho. Since its discovery in the late 1800's, it has slowly and steadily expanded its known distribution eastward from Arizona to southern Minnesota and central Iowa. The western bean cutworm was known to occasionally occur in western Iowa prior to 1970, but it was not until 2000 that an economically damaging population was found in field corn. Since then, it ...


Bt Corn, Insecticidal Seed Treatments, And Soil Insecticides For Managing Corn Rootworms: Experiences From 2004, Issues For 2005, Kevin Steffey, Mike Gray, Ron Estes Dec 2004

Bt Corn, Insecticidal Seed Treatments, And Soil Insecticides For Managing Corn Rootworms: Experiences From 2004, Issues For 2005, Kevin Steffey, Mike Gray, Ron Estes

Proceedings of the Integrated Crop Management Conference

The corn rootworm management situation in Illinois in 2004 can be characterized with four statements:


A New Species Of The Genus Actium (Coleoptera : Staphylinidae : Pselaphinae) From Boreal Oldgrowth Forests Of Quebec, Canada, Donald S. Chandler, Pierre Paquin Dec 2004

A New Species Of The Genus Actium (Coleoptera : Staphylinidae : Pselaphinae) From Boreal Oldgrowth Forests Of Quebec, Canada, Donald S. Chandler, Pierre Paquin

New Hampshire Agricultural Experiment Station

A new species, Actium abitibiense Chandler et Paquin sp. nov., is described and is associated with old-growth boreal forests in western Quebec.


Buffalograss Germplasm Resistance To Blissus Occiduus (Hemiptera: Lygaeidae), Osman Gulsen, Tiffany Heng-Moss, Robert C. Shearman, P. Stephen Baenziger, Donald J. Lee, Frederick P. Baxendale Dec 2004

Buffalograss Germplasm Resistance To Blissus Occiduus (Hemiptera: Lygaeidae), Osman Gulsen, Tiffany Heng-Moss, Robert C. Shearman, P. Stephen Baenziger, Donald J. Lee, Frederick P. Baxendale

Faculty Publications: Department of Entomology

Plant germplasm collections may offer genetic variability useful in identifying insect resistance. The goal of this project was to evaluate buffalograss genotypes [Buchloe dactyloides (Nutt.) Engelm.] for resistance to the chinch bug, Blissus occiduus Barber (Hemiptera: Lygaeidae), and to relate resistance to ploidy level, chinch bug number, and pubescence. Forty-eight buffalograss genotypes from diverse geographic locations were evaluated in replicated studies under greenhouse conditions. Of the genotypes studied, four were highly resistant, 22 were moderately resistant, 19 were moderately susceptible, and three were highly susceptible to chinch bug damage. The mean number of chinch bugs was significantly different among the ...


Isolation And Characterization Of Polymorphic Microsatellite Loci In The Boll Weevil, Anthonomus Grandis Boheman (Coleoptera: Curculionidae), Kyung Seok Kim, Thomas W. Sappington Dec 2004

Isolation And Characterization Of Polymorphic Microsatellite Loci In The Boll Weevil, Anthonomus Grandis Boheman (Coleoptera: Curculionidae), Kyung Seok Kim, Thomas W. Sappington

Entomology Publications

The boll weevil (Anthonomus grandis Boheman) is a major insect pest of cotton in North America. Dispersal activity poses a threat to ongoing eradication efforts in the US, but little is known about the frequency of long-distance migration. Nuclear molecular markers are needed to assess gene flow in relation to geographical distance. A biotin-enrichment strategy was employed to develop microsatellite markers for the boll weevil. Of 23 loci isolated, 14 were polymorphic with three to 10 alleles per locus. Twelve of the polymorphic loci showed Mendelian inheritance and are likely to be useful in population genetics studies.


Potential For Escape Of Live Boll Weevils (Coleoptera: Curculionidae) Into Cottonseed, Motes, And Cleaned Lint At The Cotton Gin, Thomas W. Sappington, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Mark D. Arnold, Roy V. Baker Dec 2004

Potential For Escape Of Live Boll Weevils (Coleoptera: Curculionidae) Into Cottonseed, Motes, And Cleaned Lint At The Cotton Gin, Thomas W. Sappington, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Mark D. Arnold, Roy V. Baker

Entomology Publications

Reintroductions of the boll weevil, Anthonomus grandis grandis Boheman, into areas of the United States where it has been eradicated or suppressed are very expensive to mitigate. There is concern that a cotton gin in an eradication zone may serve as a site of boll weevil reintroductions when processing cotton harvested in a neighboring infested zone. Similarly, there is a question whether weevil-free areas can safely import gin products, such as cottonseed and baled lint, from infested areas without risking an introduction. Many countries require fumigation of imported U.S. cotton bales to protect against boll weevil introductions, costing the ...


Catnip, Nepeta Cataria (Lamiales: Lamiaceae)—A Closer Look: Seasonal Occurrence Of Nepetalactone Isomers And Comparative Repellency Of Three Terpenoids To Insects, Gretchen Schultz, Erica Simbro, Jason B. Belden, Junwei Zhu, Joel R. Coats Dec 2004

Catnip, Nepeta Cataria (Lamiales: Lamiaceae)—A Closer Look: Seasonal Occurrence Of Nepetalactone Isomers And Comparative Repellency Of Three Terpenoids To Insects, Gretchen Schultz, Erica Simbro, Jason B. Belden, Junwei Zhu, Joel R. Coats

Entomology Publications

Evidence of repellent properties in catnip, Nepeta cataria L., to flies and cockroaches was observed in preliminary studies. This study compared catnip essential oil from steam distillation and elemol, a major constituent of osage orange essential oil, to current commercial repellents. These comparative studies found both the catnip steam distillate and elemol to be as good, and in some cases better, at repelling house flies, Musca domestica L., and American cockroaches, Periplaneta americana L., than N,N-diethyl-m-toluamide (DEET) or citronellal. Both short-term and long-term repellency bioassays were used to assess repellency. Catnip essential oil showed greater repellency ...


European Fire Ants On Mount Desert Island, Maine: Population Structure, Mechanisms Of Competition And Community Impacts Of Myrmica Rubra L. (Hymenoptera: Formicidae), Jeffrey Garnas Dec 2004

European Fire Ants On Mount Desert Island, Maine: Population Structure, Mechanisms Of Competition And Community Impacts Of Myrmica Rubra L. (Hymenoptera: Formicidae), Jeffrey Garnas

Electronic Theses and Dissertations

In the early to mid-201h century, Mvrmica rubra Latreille established in various communities in Maine, mostly along the coast. Since its establishment, the ant has spread both locally via vegetative colony budding and regionally via human commerce to no fewer than 30 Maine communities, including one inland site. Studies were undertaken in the summer of 2002 to address questions of the ants' population structure in its introduced range by testing for intercolony aggression within and between local infestations. Using captive nests maintained in their original nest soil, M. rubra was tested against its close neighbors, neighbors of lorn within the ...


Seasonal Abundance Of Mosquitoes (Diptera: Culicidae) At A High And Low Prevalence Site For La Crosse Encephalitis In Eastern Tennessee, Nathan David Caldwell Dec 2004

Seasonal Abundance Of Mosquitoes (Diptera: Culicidae) At A High And Low Prevalence Site For La Crosse Encephalitis In Eastern Tennessee, Nathan David Caldwell

Masters Theses

La Crosse (LAC), a California (CAL) serogroup bunyavirus, is the most prevalent pediatric arboviral disease in the United States and accounts for virtually all encephalitis cases associated with CAL serogroup arboviruses. In Tennessee, USA, prior to the drastic increase of confirmed La Crosse (LAC) encephalitis cases in 1997, the sum of documented cases reported to the Tennessee Department of Health totaled 9. During subsequent years in Tennessee (1997 to 2003), an average of 12 cases has been reported annually. Approximately 62% of these reported cases have occurred in the months of July and August. The native, container-inhabiting mosquito Ochlerotatus triseriatus ...


The Revised Classification For Scarabaeoidea: What The Hell Is Going On?, Brett C. Ratcliffe, Mary Liz Jameson Nov 2004

The Revised Classification For Scarabaeoidea: What The Hell Is Going On?, Brett C. Ratcliffe, Mary Liz Jameson

Papers in Entomology

Considering the turmoil and vast changes in the classification of the superfamily Scarabaeoidea during the last 20 years, particularly in North America, we were asked to provide an update for the readers of Scarabs wherein we offer our perspectives. Much of what follows is extracted from our scarabaeoid introduction in American Beetles (Jameson and Ratcliffe 2002). By the time this overview is printed, there may have been more changes in the classification because of the rapidly accumulating evidence supporting new hypotheses.

These rapid changes are a result of intensified study of the family groups using both traditional morphological evidence combined ...


Two-Year Summary Of Corn Rootworm Insecticides And Yieldgard® Rootworm, Marlin E. Rice, James Oleson Nov 2004

Two-Year Summary Of Corn Rootworm Insecticides And Yieldgard® Rootworm, Marlin E. Rice, James Oleson

Integrated Crop Management News

Two integrated pest management strategies are commonly used to protect corn roots from corn rootworm injury: crop rotation and insecticides. If corn is not rotated, or if extended diapause northern corn rootworms occur in a field, a soil insecticide might be necessary to protect the roots in 2005. The reason we say it might be necessary is because many fields do not have a rootworm population of a sufficient size to cause economic damage. There are thousands of continuous cornfields across Iowa in which a rootworm insecticide is not used and is not necessary.


Hexapod Herald – Volume 16, Number 6, November 2004 Nov 2004

Hexapod Herald – Volume 16, Number 6, November 2004

Hexapod Herald & Other Entomology Department Newsletters

Contents:
Congratulations
Welcome
Farewell
Faculty News
Student News
From the Office
Grants
Museum News
Publications
Travel
Condolences
This & That
Hexapod Herald Archives


Geographic And Voltinism Differentiation Among North American Ostrinia Nubilalis (European Corn Borer) Mitochondrial Cytochrome C Oxidase Haplotypes, Brad S. Coates, Douglas V. Sumerford, Richard L. Hellmich Nov 2004

Geographic And Voltinism Differentiation Among North American Ostrinia Nubilalis (European Corn Borer) Mitochondrial Cytochrome C Oxidase Haplotypes, Brad S. Coates, Douglas V. Sumerford, Richard L. Hellmich

Entomology Publications

DNA sequence of European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae), mitochondrial cytochrome c oxidase I (cox1) and II (cox2) genes were characterized and used for population genetic analysis. Twenty-six point mutations were identified from a 2,156 bp DNA sequence alignment. The frequency of polymorphic cox1 DdeI and HaeIII, and cox2 Sau3AI and MspI restriction sites were determined from 1,414 individuals by polymerase chain reaction restriction fragment length polymorphism. Ten haplotypes were observed. A single haplotype was present among 90% of individuals examined, and a HaeIII haplotype was not present in samples from ...


Monitoring Western Corn Rootworm (Coleoptera: Chrysomelidae) Susceptibility To Carbaryl And Cucurbitacin Baits In The Areawide Management Pilot Program, Blair Siegfried, Lance J. Meinke, Srivinas Parimi, Michael E. Scharf, Timothy J. Nowatzki, X. Zhou, Laurence D. Chandler Oct 2004

Monitoring Western Corn Rootworm (Coleoptera: Chrysomelidae) Susceptibility To Carbaryl And Cucurbitacin Baits In The Areawide Management Pilot Program, Blair Siegfried, Lance J. Meinke, Srivinas Parimi, Michael E. Scharf, Timothy J. Nowatzki, X. Zhou, Laurence D. Chandler

Faculty Publications: Department of Entomology

Area-wide pest management involves the uniform application of a pest control strategy over wide geographic areas. Therefore, these programs are likely to impose intense selective pressures, and the risk for resistance development among pest species for which area-wide management programs are implemented is likely to be high. Pilot studies for area-wide management of western corn rootworm, Diabrotica virgifera virgifera LeConte, were conducted from 1996 to 2002 at four different sites across the Corn Belt. This program used cucurbitacin baits to deliver high doses of a traditional neurotoxic insecticide (carbaryl) to individual insects while reducing the overall rate of insecticide use ...


Hexapod Herald – Volume 26, Number 4, October 2004 Oct 2004

Hexapod Herald – Volume 26, Number 4, October 2004

Hexapod Herald & Other Entomology Department Newsletters

Contents:
Congratulations
Welcome
Farewell
Faculty News
Student News
From the Office
Grants
Museum News
Publications
Travel
Condolences
This & That
Hexapod Herald Archives


Genetically Engineered Crops And Pesticide Use In The United States: The First Nine Years, Charles M. Benbrook Oct 2004

Genetically Engineered Crops And Pesticide Use In The United States: The First Nine Years, Charles M. Benbrook

Leopold Center Publications and Papers

This report builds on earlier data and analysis funded by the Leopold Center that covered the first eight years of commercial use of genetically engineered crops. More recent reports are available at The Organic Center.


Sequence Variation In The Cadherin Gene Of Ostrinia Nubilalis: A Tool For Field Monitoring, Brad S. Coates, Douglas V. Sumerford, Richard L. Hellmich, Leslie C. Lewis Oct 2004

Sequence Variation In The Cadherin Gene Of Ostrinia Nubilalis: A Tool For Field Monitoring, Brad S. Coates, Douglas V. Sumerford, Richard L. Hellmich, Leslie C. Lewis

Entomology Publications

Toxin-binding proteins of insect midgut epithelial cells are associated with insect resistance to Bacillus thuringiensis (Bt) Cry toxins. A 5378 nt cDNA encoding a 1717 amino acid putative midgut cadherin-like glycoprotein and candidate Cry1Ab toxin-binding protein was characterized from Ostrinia nubilalis. Intraspecific alignment of partial O. nubilalis cadherin gene sequences identified variance within proposed Cry1A toxin binding region 2 (TBR2), 1328IPLQTSILVVT[I/V] N1340, and flanking Cry1A toxin binding region 1 (TBR1), 861DIEIEIIDTNN871. DNA sequence and PCR-RFLP detected single nucleotide polymorphism between cadherin alleles, and pedigree analysis demonstrated Mendelian inheritance. A population sample from Mead, Nebraska ...


Boll Weevil (Coleoptera: Curculionidae) Survival Through Cotton Gin Trash Fans, Thomas W. Sappington, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Mark D. Arnold, Roy V. Baker Oct 2004

Boll Weevil (Coleoptera: Curculionidae) Survival Through Cotton Gin Trash Fans, Thomas W. Sappington, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Mark D. Arnold, Roy V. Baker

Entomology Publications

There is concern that cotton gins may serve as loci for reintroduction of boll weevils,Anthonomus grandis grandis Boheman, to eradicated or suppressed zones when processing weevil-infested cotton from neighboring zones. Previous work has shown that virtually all weevils entering the gin in the seed cotton will be removed before they reach the gin stand. Those not killed by the seed cotton cleaning machinery will be shunted alive into the trash fraction, which passes through a centrifugal trash fan before exiting the gin. The objective of this study was to determine survival potential of boll weevils passed through a trash ...


Larvae Of Ceratocanthidae And Hybosoridae (Coleoptera: Scarabaeoidea): Study Of Morphology, Phylogenetic Analysis And Evidence Of Paraphyly Of Hybosoridae, Vasily V. Grebennikov, Alberto Ballerio, Federico C. Ocampo, Clarke E. Scholtz Oct 2004

Larvae Of Ceratocanthidae And Hybosoridae (Coleoptera: Scarabaeoidea): Study Of Morphology, Phylogenetic Analysis And Evidence Of Paraphyly Of Hybosoridae, Vasily V. Grebennikov, Alberto Ballerio, Federico C. Ocampo, Clarke E. Scholtz

Papers in Entomology

Larvae of the scarabaeoid genera Germarostes Paulian, Cyphopisthes Gestro, Paulianostes Ballerio, Ceratocanthus White, Pterorthochaetes Gestro, Madrasostes Paulian, Astaenomoechus Martínez & Pereira (Ceratocanthidae) and Hybosorus Macleay, Phaeochrous Castelnau, and Anaides Westwood (Hybosoridae) are described, keyed and illustrated with fifty-seven drawings. A phylogenetic analysis of these two families based on larval morphology is presented. Fifty-four larval morphological and three biological characters from twenty-seven taxa revealed nineteen equally parsimonious cladograms. The monophyly of (Ceratocanthidae + Hybosoridae) is supported by four unambiguous unique synapomorphies: dorsal medial endocarina on cranium extended anteriorly into frontal sclerite; presence of large membranous spot on apical antennomere; labium dorsally with four pores in center (secondarily reduced to two pores in some groups); and presence of stridulatory organ on fore- and middle legs (secondarily reduced in some groups). Our analysis suggests that the family Hybosoridae is paraphyletic with respect to Ceratocanthidae. The clade comprising the hybosorid genera Hybosorus and Phaeochrous is the sister group of the remaining Hybosoridae plus Ceratocanthidae. It is supported by two unambiguous synapomorphies: two apical antennomeres completely ...


Continuing Instructional Courses, Fall 2004, Elizabeth Minner Sep 2004

Continuing Instructional Courses, Fall 2004, Elizabeth Minner

Integrated Crop Management News

Pesticide use in Iowa is regulated under the Pesticide Act of Iowa. Iowa State University Extension provides raining and certification programs for commercial pesticide applicators in Iowa. Several fall courses are scheduled.