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10,329 full-text articles. Page 5 of 256.

Monarch Butterfly (Danaus Plexippus) Life‐Stage Risks From Foliar And Seed‐Treatment Insecticides, Niranjana Krishnan, Yang Zhang, Melanie E. Aust, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury 2021 Iowa State University

Monarch Butterfly (Danaus Plexippus) Life‐Stage Risks From Foliar And Seed‐Treatment Insecticides, Niranjana Krishnan, Yang Zhang, Melanie E. Aust, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury

Entomology Publications

Conservation of North America's eastern monarch butterfly (Danaus plexippus) population would require establishment of milkweed (Asclepias spp.) and nectar plants in the agricultural landscapes of the north central United States. A variety of seed‐treatment and foliar insecticides are used to manage early‐ and late‐season pests in these landscapes. Thus, there is a need to assess risks of these insecticides to monarch butterfly life stages to inform habitat conservation practices. Chronic and acute dietary toxicity studies were undertaken with larvae and adults, and acute topical bioassays were conducted with eggs, pupae, and adults using 6 representative insecticides: beta ...


Conservation Risks And Benefits Of Establishing Monarch Butterfly (Danaus Plexippus) Breeding Habitats Close To Maize And Soybean Fields In The North Central United States: A Landscape‐Scale Analysis Of The Impact Of Foliar Insecticide On Nonmigratory Monarch Butterfly Populations, Tyler J. Grant, Niranjana Krishnan, Steven P. Bradbury 2021 Iowa State University

Conservation Risks And Benefits Of Establishing Monarch Butterfly (Danaus Plexippus) Breeding Habitats Close To Maize And Soybean Fields In The North Central United States: A Landscape‐Scale Analysis Of The Impact Of Foliar Insecticide On Nonmigratory Monarch Butterfly Populations, Tyler J. Grant, Niranjana Krishnan, Steven P. Bradbury

Natural Resource Ecology and Management Publications

Establishing habitat in agricultural landscapes of the north central United States is critical to reversing the decline of North America's eastern monarch butterfly (Danaus plexippus) population. Insecticide use could create population sinks and threaten recovery. Discouraging habitat establishment within a 38‐m zone around crop fields is a suggested risk mitigation measure. In Story County, Iowa, United States, this mitigation would discourage habitat establishment in 84% of roadsides and 38% of noncrop land. It is unclear if the conservation benefits from establishing habitat close to crop fields outweigh suppression of population growth owing to insecticide exposure. Consequently, monarch conservation ...


Weather And Landscape Influences On Pollinator Visitation Of Flowering Winter Oilseeds (Field Pennycress And Winter Camelina), Frank Forcella, Swetabh Patel, Andrew W. Lenssen, Cody Hoerning, M. Scott Wells, Russ W. Gesch, Marisol T. Berti 2020 University of Minnesota - Twin Cities

Weather And Landscape Influences On Pollinator Visitation Of Flowering Winter Oilseeds (Field Pennycress And Winter Camelina), Frank Forcella, Swetabh Patel, Andrew W. Lenssen, Cody Hoerning, M. Scott Wells, Russ W. Gesch, Marisol T. Berti

Agronomy Publications

Flowers of field pennycress (Thlaspi arvsense L.) and winter camelina (Camelina sativa (L.) Crantz.) produce abundant pollen and nectar in early spring and thereby may be valuable for pollinators. Insects observed in field plots of these flowers were classified into seven easily identifiable groups (bumblebee, honeybee, solitary bee, butterfly/moth, beetle, fly and other) and monitored for 2 years at three sites in the Upper Midwest region of the USA. Average seasonal observations across years and sites varied from 1.6 to 5.3 total insects/min for field pennycress and 1.4 to 4.5 insects/min for winter ...


Molecular Signatures Of Sexual Communication In The Phlebotomine Sand Flies, Paul V. Hickner, Nataliya Timoshevskaya, Ronald J. Nowling, Frédéric Labbé, Andrew D. Nguyen, Mary Ann McDowell, Carolina N. Spiegel, Zainulabeuddin Syed 2020 University of Kentucky

Molecular Signatures Of Sexual Communication In The Phlebotomine Sand Flies, Paul V. Hickner, Nataliya Timoshevskaya, Ronald J. Nowling, Frédéric Labbé, Andrew D. Nguyen, Mary Ann Mcdowell, Carolina N. Spiegel, Zainulabeuddin Syed

Biology Faculty Publications

Phlebotomine sand flies employ an elaborate system of pheromone communication wherein males produce pheromones that attract other males to leks (thus acting as an aggregation pheromone) and females to the lekking males (sex pheromone). In addition, the type of pheromone produced varies among populations. Despite the numerous studies on sand fly chemical communication, little is known of their chemosensory genome. Chemoreceptors interact with chemicals in an organism’s environment to elicit essential behaviors such as the identification of suitable mates and food sources. Thus, they play important roles during adaptation and speciation. Major chemoreceptor gene families, odorant receptors (ORs), gustatory ...


A Review Of The Colaspis Suilla Species Group, With Description Of Three New Species From Florida (Coleoptera: Chrysomelidae: Eumolpinae), E.G. Riley 2020 Texas A&M University

A Review Of The Colaspis Suilla Species Group, With Description Of Three New Species From Florida (Coleoptera: Chrysomelidae: Eumolpinae), E.G. Riley

Insecta Mundi

The Colaspis suilla species group (Coleoptera: Chrysomelidae: Eumolpinae) is defined relative to other species of the genus Colaspis Fabricius occurring in the United States. The group is composed of five species, of which three from Florida are described as new species: C. ansa Riley from the Florida Panhandle, C. skelleyi Riley from Central Florida, and C. thomasi Riley from the southern Lake Wales Ridge. Colaspis suilla borealis Blake is reduced to a full synonym of C. suilla Fabricius, new synonymy. Comparative remarks, habitus images, images of male and female genitalia, range maps, specimen data, and a key to species are ...


A New Species Of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) From The Southeastern United States, With A Lectotype Designation, Kyle E. Schnepp, Krystal L. Ashman 2020 Florida State Collection of Arthropods

A New Species Of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) From The Southeastern United States, With A Lectotype Designation, Kyle E. Schnepp, Krystal L. Ashman

Insecta Mundi

A new species of Ataenius Harold, Ataenius thomasi Schnepp and Ashman (Coleoptera: Scara­baeidae: Aphodiinae), from Florida, Georgia, and Mississippi, U.S.A. is described. The lectotype for Ataenius brevis Fall is designated.

In the United States and Canada the genus Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) contains 46 species (Stebnicka 2007; Smith 2009). The most recent faunal review of this genus in these countries was completed by Cartwright (1974). However, several species in that paper have been moved to other genera or syn­onymized (Stebnicka 2007). Stebnicka and Lago (2005) provide a key and catalog to the Ataenius strigatus group ...


Review Of Carpophilus (Ecnomorphus) Motschulsky, 1858 (Coleoptera: Nitidulidae: Carpophilinae) In The West Indies, Gareth S. Powell, Kyle E. Schnepp 2020 Brigham Young University

Review Of Carpophilus (Ecnomorphus) Motschulsky, 1858 (Coleoptera: Nitidulidae: Carpophilinae) In The West Indies, Gareth S. Powell, Kyle E. Schnepp

Insecta Mundi

Two new species of Carpophilus Stephens, 1829 in the subgenus Ecnomorphus Motschulsky, 1858 (Coleoptera: Nitidulidae) were recovered in material from the Caribbean. Descriptions and detailed diagnoses are provided for Carpophilus (Ecnomorphus) jamaicensis Powell and Schnepp, new species and Carpophilus (Ecnomorphus) thomasi Powell and Schnepp, new species. A key to the Carpophilus (Ecnomor­phus) of the West Indies is appended.

The family Nitidulidae Latreille is distributed throughout the world and reported broadly throughout the West Indies (Blackwelder 1945). The family represents one of the most diverse lineages of cucujoid beetles; however, the group remains one of the more difficult to reliably ...


New Family Record For The West Indies And Two New Species Of Glaresis Erichson (Coleoptera: Scarabaeoidea: Glaresidae) From Hispaniola, Oliver Keller, Paul E. Skelley 2020 University of Florida

New Family Record For The West Indies And Two New Species Of Glaresis Erichson (Coleoptera: Scarabaeoidea: Glaresidae) From Hispaniola, Oliver Keller, Paul E. Skelley

Insecta Mundi

Glaresis franki Keller and Skelley new species and Glaresis thomasi Keller and Skelley new species (Coleoptera: Scarabaeoidea: Glaresidae) are described and illustrated. They represent the first record of the family for the West Indies. Both species are placed into the phoenicis species group. A key to the two West Indies species is presented.

Resumen. Se describe e ilustra Glaresis franki Keller y Skelley nueva especie y Glaresis thomasi Keller y Skelley nueva especie (Coleoptera: Scarabaeoidea: Glaresidae). Estas especies representan el primer record de la familia para las indias occidentales. Ambas especies se colocan en el grupo de especies de phoenicis ...


Description Of Two New Genera And A Taxonomic Key To The World Genera Of Cybocephalidae (Coleoptera), Trevor Randall Smith 2020 Florida State Collection of Arthropods

Description Of Two New Genera And A Taxonomic Key To The World Genera Of Cybocephalidae (Coleoptera), Trevor Randall Smith

Insecta Mundi

Abstract. The sixteen genera of Cybocephalidae (Coleoptera) occurring worldwide are listed and keyed. The genera included are Amedissia Kirejtshuk and Mantič, Apastillus Kirejtshuk and Mantič, Cybocepha­lus Erichson, Endrodiellus Endrödy-Younga, Eupastillus Lawrence, Hierronius Endrödy-Younga, Horadion Endrödy-Younga, Pacicephalus Kirejtshuk and Mantič, Pastillocenicus Kirejtshuk and Nel, Pastillodes En­drödy-Younga, Pastillus Endrödy-Younga, Pycnocephalus Sharp, Taxicephomerus Kirejtshuk, Theticephalus Kirejtshuk, a description of a new genus, Microthomas T. R. Smith, with one new species, M. brevicornis T. R. Smith, from Bolivia, and a new genus, Conglobatus T. R. Smith, with two new species, C. armatus T. R. Smith from Central and South America and C ...


Phyllobaenus Thomasi And P. Turnbowi, Two New Species From Mexico And Belize (Coleoptera: Cleridae: Hydnocerinae: Hydnocerini), John M. Leavengood, Jr. 2020 USDA APHIS Plant Protection and Quarantine

Phyllobaenus Thomasi And P. Turnbowi, Two New Species From Mexico And Belize (Coleoptera: Cleridae: Hydnocerinae: Hydnocerini), John M. Leavengood, Jr.

Insecta Mundi

The two new species Phyllobaenus thomasi (Campeche, Oaxaca, Quintana Roo and Yucatán, Mexico, and Belize) and P. turnbowi (San Luis Potosi, Mexico), are described (Coleoptera: Cleridae: Hydnocerinae: Hydnocerini). The primary types are photographed and intrageneric relationships of the species are discussed.

Recent nomenclatural and descriptive work by Leavengood (2014), Leavengood and Garner (2014), Barr (2018) and Leavengood and Rifkind (2020) have made changes to the approximately 120 described species of New World Hydnocerini (i.e., Phyllobaenus Dejean, Isohydnocera Chapin and Wolcottia Chapin). Over 100 of these species comprise the genus Phyllobaenus. Mexico and Central America are home to about half ...


A New Species Of Euxestoxenus Arrow (Coleoptera: Euxestidae) From Thailand, Adam Ślipiński 2020 Australian National Insect Collection, CSIRO

A New Species Of Euxestoxenus Arrow (Coleoptera: Euxestidae) From Thailand, Adam Ślipiński

Insecta Mundi

A new species of Euxestoxenus Arrow (Coleoptera: Euxestidae), E. thomasi Ślipiński, is described from northern Thailand. The species differs from all Oriental and most of African species of Euxestoxenus by a 10-segmented antenna and glabrous, polished dorsum.

Euxestidae is a small and poorly known family of Coccinelloidea that currently includes 11 genera and about 70 species distributed mostly in the Old-World tropics and subtropics but extending into temperate areas of North America and Australia (Ślipiński 1990). The biology of the Euxestidae is mostly unknown but it appears that all species are fungivores, commonly found in rotten wood, forest litter, in ...


Michyrus, A New Genus Of Pleasing Fungus Beetles With Coarsely Faceted Eyes (Coleoptera: Erotylidae), Paul E. Skelley, Héctor Jaime Gasca-Álvarez 2020 Florida State Collection of Arthropods

Michyrus, A New Genus Of Pleasing Fungus Beetles With Coarsely Faceted Eyes (Coleoptera: Erotylidae), Paul E. Skelley, Héctor Jaime Gasca-Álvarez

Insecta Mundi

Michyrus Skelley and Gasca-Álvarez, new genus, is a Neotropical Tritomini (Coleoptera: Ero­tylidae: Erotylinae) with many unusual characters, whose relationships are unclear. Two new species are described: M. thomasi Skelley and Gasca-Álvarez and M. yvineci Skelley and Gasca-Álvarez.

Resumen. Michyrus Skelley y Gasca-Álvarez, nuevo género, es un Tritomini Neotropical (Coleoptera: Ero­tylidae: Erotylinae: Tritomini) con muchos estados de carácter inusuales, cuyas relaciones no están claras. Se describen dos nuevas especies: M. thomasi Skelley y Gasca-Álvarez y M. yvineci Skelley y Gasca-Álvarez.

A resurgence of publications on foundational faunal works, descriptive and revisionary taxonomy, and nomen­clatural issues within the new ...


Aphelocerus Thomasi, A New Species Of Checkered Beetle (Coleoptera: Cleridae: Clerinae) From Mexico, Jacques Rifkind 2020 California State Collection of Arthropods

Aphelocerus Thomasi, A New Species Of Checkered Beetle (Coleoptera: Cleridae: Clerinae) From Mexico, Jacques Rifkind

Insecta Mundi

Aphelocerus thomasi Rifkind, new species (Coleoptera: Cleridae: Clerinae), is described from the state of San Luis Potosí, Mexico. This beetle is named for the late Michael C. Thomas, in recognition of his lifetime of contributions to the study of Coleoptera.

Aphelocerus Kirsch (Coleoptera: Cleridae) is a moderately speciose genus (approx. 66 species) of predaceous beetle, broadly distributed across Mexico, Central America, and South America, that was recently revised by Opitz (2005). The Mexican Aphelocerus fauna includes approximately 25 described species (Opitz 2005), and several undescribed species are known. Endemism appears to be common, particularly in the tropical and subtropical highlands ...


In Memoriam: Michael C. Thomas. May 5, 1948–October 4, 2019, Paul E. Skelley, J. H. Frank 2020 Florida State Collection of Arthropods

In Memoriam: Michael C. Thomas. May 5, 1948–October 4, 2019, Paul E. Skelley, J. H. Frank

Insecta Mundi

We honor the life and accomplishments of Michael C. Thomas with a short narrative of his professional life along with appendices listing his scientific artwork, bibliography and patronyms. This paper is the first of a Festschrift with contributed remembrances and separate papers honoring him with additional patronyms.

This and the following set of papers published in Insecta Mundi are dedicated to Michael C. Thomas, as tribute and thanks from a small number of those he mentored or assisted throughout his life. Mike’s contributions to the study of beetles and as a member of the Insecta Mundi Editorial Board, editing ...


Three New Species Of South American Checkered Beetles (Coleoptera: Cleridae: Clerinae), Weston Opitz 2020 Florida Department of Agriculture and Consumer Services

Three New Species Of South American Checkered Beetles (Coleoptera: Cleridae: Clerinae), Weston Opitz

Insecta Mundi

Three new species of Enoclerus Gahan (Coleoptera: Cleridae) are described and illustrated. They are: Enoclerus minas Opitz from Colombia and Brazil, E. salta Opitz from Argentina, and E. thomasi Opitz from Bolivia.

Corporaal (1950: 14) lists 185 species of Enoclerus Gahan (Coleoptera: Cleridae: Clerinae). I know of over 60 undescribed species. It is a daunting task to organize such a high number of species into some sort of taxonomic revision, which cannot be provided at this time. However, some of these new species can be described that will be added to a larger work at a later date. Such descriptive ...


Dyslexia, A New Remarkable Genus Of Pleasing Fungus Beetles (Coleoptera: Erotylidae: Erotylinae) From The Andes, Paul E. Skelley, Héctor Jaime Gasca-Álvarez 2020 Florida State Collection of Arthropods

Dyslexia, A New Remarkable Genus Of Pleasing Fungus Beetles (Coleoptera: Erotylidae: Erotylinae) From The Andes, Paul E. Skelley, Héctor Jaime Gasca-Álvarez

Insecta Mundi

Dyslexia Skelley and Gasca-Álvarez, new genus (Coleoptera: Erotylidae: Erotylinae: Erotylini), is described and illustrated. The genus is comprised of four new species, all described by Skelley and Gasca-Álvarez: D. belamyi, D. dathomirria, D. pulcricolor, and D. tomasi. The unique broad head structures of this genus are characterized and compared with other genera. Problems associated with the taxonomy of Erotylini are discussed.

Resumen. Se describe y se ilustra a Dyslexia Skelley y Gasca-Álvarez, nuevo género (Coleoptera: Erotyli­dae: Erotylinae: Erotylini). El género está formado por cuatro especies nuevas, todas descritas por Skelley y Gasca-Álvarez: D. belamyi, D. dathomirria, D. pulcricolor, y ...


New And Little Known Coleoptera (Silvanidae: Silvaninae) From Central And South America, David G. H. Halstead 2020 Old Windsor, Berkshire, UK

New And Little Known Coleoptera (Silvanidae: Silvaninae) From Central And South America, David G. H. Halstead

Insecta Mundi

The following Silvaninae (Coleoptera: Silvanidae) are included: Synobius Sharp, 1899, with its spe­cies, Synobius lobicollis Sharp, 1899 and Synobius lobatus (Grouvelle, 1896); Neocorimus thomasi, new genus and new species; Austronausibius wagneri (Grouvelle) new combination, a species originally placed in Nau­sibius Lentz by Grouvelle (1913); a third species of Pensus Halstead, 1973, is described, Pensus hirtus new species, and a short key given for distinguishing it from the already known species, Pensus gilae (Casey) and Pensus guatemalenus (Sharp); also Coccidotrophus Schwarz and Barber, 1921, including Coccidotrophus socialis Schwarz and Barber, 1921, Coccidotrophus cordiae Barber, 1928, Coccidotrophus wheeleri (Schwarz and ...


Two New Species Of Pharaxonotha Reitter Among The Early-Diverging Lineages, With A Key To The Species Of The Genus (Coleoptera: Erotylidae: Pharaxonothinae), Paul E. Skelley, William Tang 2020 Florida State Collection of Arthropods

Two New Species Of Pharaxonotha Reitter Among The Early-Diverging Lineages, With A Key To The Species Of The Genus (Coleoptera: Erotylidae: Pharaxonothinae), Paul E. Skelley, William Tang

Insecta Mundi

Two species of the early-diverging lineages of Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) are described: Pharaxonotha taylori Skelley and Tang, new species, and Pharaxonotha thomasi Skelley and Tang, new species. A new key to described species of Pharaxonotha, based on previously unused characters, is presented.

In recent phylogenetic analyses of beetle diversity based on a large nuclear data set (McKenna et al. 2019) and on nuclear and mitochondrial legacy loci (Powell, pers. comm. 2020), the New World genus Pharaxonotha Reitter (Erotylidae: Pharaxonothinae) was shown to be sister to all remaining Erotylidae in a clade comprised of the Erotylidae+Phytophaga, which includes ...


Impact Of Predators On Hemlock Woolly Adelgid (Hemiptera: Adelgidae) In The Eastern And Western United States, Ryan Crandall 2020 University of Massachusetts Amherst

Impact Of Predators On Hemlock Woolly Adelgid (Hemiptera: Adelgidae) In The Eastern And Western United States, Ryan Crandall

Masters Theses

Hemlock woolly adelgid, Adelges tsugae, native to Asia and the Pacific Northwest of North America (Pacific Northwest), has devastated eastern hemlock (Tsuga canadensis) in a major portion of its range in the eastern U.S. After many years and much effort directed towards rearing and releasing biological control agents to manage HWA, one of these agents, Laricobius nigrinus, native to the Pacific Northwest, is now well-established in sites from the southern to the mid-Atlantic states of the eastern U.S. However, there have yet to be studies of its efficacy in lowering A. tsugae densities, and there has been no ...


A Remarkable New Species Of Nothochodaeus Nikolajev From Sumatra (Coleoptera: Scarabaeoidea: Ochodaeidae), M. J. Paulsen 2020 University of Nebraska State Museum

A Remarkable New Species Of Nothochodaeus Nikolajev From Sumatra (Coleoptera: Scarabaeoidea: Ochodaeidae), M. J. Paulsen

Insecta Mundi

Nothochodaeus marsupialis Paulsen, new species (Coleoptera: Ochodaeidae), is described from Aceh Province, Indonesia, on the island of Sumatra. The species possesses deep abdominal cavities behind a shield-like central process, as well as rows of conical tubercles laterally on the second and third ventrites. These structures have not been found in any other members of the genus or family.


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