Entomology Commons^™

Descripción De Una Nueva Especie De Tegmaleurodes Martin (Hemiptera: Aleyrodidae) De Guatemala, José Francisco García-Ochaeta

Insecta Mundi

Se describe Tegmaleurodes sanchezi, nueva especie (Hemiptera: Aleyrodidae), de Guatemala. Se proporcionan microfotografías de estructuras morfológicas del pupario, se comentan las características dife­renciales de la especie con sus congéneres y se incluye una clave para las especies.

Tegmaleurodes sanchezi, new species (Hemiptera: Aleyrodidae), is described from Guatemala. Photomicrographs of the morphological structures of the puparium are provided, distinguishing characteris­tics of the species from its congeners are discussed, and a key to the species is included.

El género de moscas blancas Tegmaleurodes fue descrito por Martin (2005), incluyendo las tres especies neotro­picales Tegmaleurodes lentus Martin, 2005, T. crustatus (Bondar, …

Taxonomic Changes Suggested By The Genomic Analysis Of Hesperiidae (Lepidoptera), Jing Zhang, Qian Cong, Jinhui Shen, Nick V. Grishin

Insecta Mundi

Our expanded efforts in genomic sequencing to cover additional skipper butterfly (Lepidoptera: Hesperiidae) species and populations, including primary type specimens, call for taxonomic changes to re­store monophyly and correct misidentifications by moving taxa between genera and proposing new names. Reconciliation between phenotypic characters and genomic trees suggests three new tribes, two new sub­tribes, 23 new genera, 17 new subgenera and 10 new species that are proposed here: Psolosini Grishin, new tribe (type genus Psolos Staudinger, 1889), Ismini Grishin, new tribe (type genus Isma Distant, 1886), Eetio­nini Grishin, new tribe (type genus Eetion de Nicéville, 1895), Orphina Grishin, new subtribe (type …

A Second Species Of The Genus Erebaces Pascoe, 1871 (Curculionidae: Molytinae: Cryptorhynchini) From The Philippines, Robert S. Anderson

Insecta Mundi

Erebaces woodruffi Anderson, new species (Curculionidae: Molytinae: Cryptorhynchini), from Palawan (Philippines) is described and illustrated. This is the second species of the genus Erebaces Pascoe described from the Philippines. It can be separated from Erebaces kidapawanus Pancini by the pair of divergent dorsal pale-scaled lines on the pronotum extended onto the elytra and by the form of the elytral tubercles.

The genus Erebaces Pascoe, 1871 was recently recorded in the Philippines based on the presence of E. kidapawanus Pancini, 2021 from Mindanao. The genus is easily recognized by the eyes finely faceted, protruding (toothed) elytral humeri, the deep rostral canal …

Revision Of The Checkered Beetle Genus Onychotillus Chapin (Coleoptera: Cleridae: Tillinae), Weston Opitz

Insecta Mundi

The West Indian genus Onychotillus Chapin (Coleoptera: Cleridae: Tillinae) is revised and includes O. androwi Opitz, new species, O. apiculus Opitz, new species, O. cinctipennis (Chevrolat,1874), O. cubana de Zayas,1988, O. dimidiatus de Zayas,1988, O. lineatus Opitz, new species, O. minutus de Zayas,1988, O. trinitatis de Zayas,1988, O. woodruffi Opitz, new species, and O. vittatus Chapin,1945.

Robert E. Woodruff was a consummate collector of insects, gems, and items of art. He was a superb taxonomist with a specialty in the beetle family Scarabaeidae. This contribution is dedicated …

Review Of Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) Inhabiting The Cycad Genus Dioon Lindl. (Cycadales), With Descriptions Of Nine New Species And Comments On P. Kirschii Reitter, Paul E. Skelley, William Tang, Miguel Angel Pérez-Farrera

Insecta Mundi

The beetle genus Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) is found in the cones of cycad genera in the New World, including species of Dioon Lindl., Ceratozamia Brongn., Microcycas (Miq.) A.DC and Zamia L. In this paper nine new species found in Dioon are described by Skelley, Tang and Pérez-Farrera: Pharaxonotha bicolor, P. dimorpha, P. fawcettae, P. gigantea, P. novoai, P. occidentalis, P. sclerotiza, P. woodruffi, P. vovidesi. A key to described species of Pharaxonotha inhabiting Dioon is presented, along with an account of Pharaxonotha kirschii …

In Memoriam: Robert E. Woodruff, July 20, 1933–July 8, 2021, Paul E. Skelley, Oliver Keller

Insecta Mundi

This and the following set of papers published in Insecta Mundi are dedicated to Robert E. Woodruff, as tribute and thanks from those he mentored or assisted throughout his life. Bob’s many contributions to the study of beetles, being a founding member and first president of the Center for Systematic Entomology (CSE), co-creating Insecta Mundi with Ross H. Arnett, Jr., and having served in various capacities for 30 years on the CSE board of directors and the editorial board of Insecta Mundi, were deemed significant enough to allow this paper outside our normal guidelines. The following pages highlight the life …

The First Report Of Lissomus Dalman (Coleoptera: Elateridae: Lissominae) From The Greater Antilles, With Two New Species From The Dominican Republic, Paul J. Johnson

Insecta Mundi

Lissomus quisqueya new species and L. woodruffi new species are described. Both species are reported from the Dominican Republic on the island of Hispaniola. These are the first species of Lissomus Dalman reported from the Greater Antilles. Lissomus quisqueya is recorded from montane mesic forests in the Cordillera Central from Dajadon and La Vega provinces. Lissomus woodruffi is recorded from Barahona, Independencia and Pedernales provinces from montane mesic forest in the Sierra de Bahoruco. Morphologically, these species are most similar to members of the L. discedens Bonvouloir species group from Mesoamerica and South America. Known sites of occurrence of L. …

A Third Species Of Haroldiellus Gordon And Skelley, 2007 From Mexico And Central America (Coleoptera: Scarabaeidae: Aphodiinae: Aphodiini), Paul E. Skelley, Oliver Keller

Insecta Mundi

Haroldiellus woodruffi Skelley and Keller, new species, (Coleoptera: Scarabaeidae: Aphodiinae: Aphodiini), from Costa Rica, Guatemala, Mexico, and Panama is described. An updated key for the genus, updated distributions, and diagnoses for the other two species are provided.

Se describe la nueva especie Haroldiellus woodruffi Skelley y Keller (Coleoptera: Sacarabaeidae: Aphodiinae: Aphodiinae) de Costa Rica, Guatemala, México y Panamá. Se provee una clave, distribuciones y diagnosis actualizadas para las otras dos especies.

Worldwide, the scarabaeid subfamily Aphodiinae Leach, 1815 (when including Aegialiinae Laporte, 1840) con­sists of about 3200 species in 14 tribes and around 280 genera (Nikolajev 2008; Skelley 2008; …

A New Species Of Phyllophaga Harris (Coleoptera: Scarabaeidae: Melolonthinae) From Puerto Rico, Kyle E. Schnepp

Insecta Mundi

Phyllophaga bobevelynorum Schnepp, new species (Coleoptera: Scarabaeidae: Melolonthinae), is described from Puerto Rico. The species is illustrated and diagnosed, and a checklist of the species in Puerto Rico is given.

The genus Phyllophaga Harris is extremely diverse, with over 850 species currently assigned to it, all occurring in the New World. As with almost all Phyllophaga in the West Indies, this new species belongs to the subgenus Cne­marachis Saylor, whose members have the outer surface of the metatibia with an incomplete carina. As discussed by Smith and Paulsen (2015), this subgenus is endemic to the West Indies and has a …

A New Genus Of Predatory Midge In The Monohelea Complex From Eocene Baltic Amber (Diptera: Ceratopogonidae), Ryszard Szadziewski, William L. Grogan Jr., Elżbieta Sontag, Błażej Bojarski

Insecta Mundi

Monogedania, a new fossil monotypic genus of predatory midge (Diptera: Ceratopogonidae) is described from Eocene Baltic amber and its position within the Monohelea complex is discussed. We dis­covered that the membranous portion of the aedeagus is extended in Monogedania clunipes (Loew), new combination, which suggests that the aedeagus of some extinct predatory midges can be penis-like. The Eocene Monohelea baltica Szadziewski, is transferred to the genus Schizohelea Kieffer, new combination, and, the previously unknown female is described, and key characters are included in color photographs of its entire habitus, head, distal hind tarsomeres and claws.

The Monohelea …

Extinct Or Extant? A New Species Of Termitodius Wasmann, 1894, (Coleoptera: Scarabaeidae: Aphodiinae: Rhyparini) With A Short Review Of The Genus, Paul E. Skelley, Julian Clavijo-Bustos, Oliver Keller

Insecta Mundi

A new species of Termitodius Wasmann (Coleoptera: Scarabaeidae: Aphodiinae: Rhyparini) is de­scribed from Colombia, Termitodius woodruffi Skelley, Clavijo-Bustos, and Keller, new species. This species is both extant and abundantly preserved in copal. The genus Termitodius is reviewed with a key and brief accounts to all species.

Una nueva especie de Termitodius Wasmann (Coleoptera: Scarabaeidae: Aphodiinae: Rhyparini) es descrita de Colombia, Termitodius woodruffi Skelley, Clavijo-Bustos, y Keller, nueva especie. Esta especie es existente y abundantemente preservada en copal. El género Termitodius es revisado con una clave y reseñas breves para todas las especies.

The pantropical tribe Rhyparini is represented …

Dichotomius Woodruffi, A New Dichotomius Species Of The Agenor Group From Costa Rica And Nicaragua (Coleoptera: Scarabaeidae: Scarabaeinae), Ángel Solis, Burt Kohlmann

Insecta Mundi

We describe a new species of Dichotomius Hope, 1838, from the D. agenor species-group from Costa Rica and Nicaragua: D. woodruffi Solís and Kohlmann, new species (Coleoptera: Scarabaeidae: Scara­baeinae). Based on this discovery, we confirm that Dichotomius enioi Montoya-Molina and Vaz-de-Mello, 2021 and D. agenor (Harold, 1869) are not currently distributed in Costa Rica. Instead, the only species of Dichotomius that are currently distributed in Costa Rica from the D. agenor species-group are D. centralis (Harold, 1869) and D. woodruffi. We discuss the distribution of the Dichotomius agenor species-group in Central America.

In …

A New Species Of Brachycerocoris Costa (Hemiptera: Heteroptera: Pentatomidae: Podopinae) From The Philippines, Joseph E. Eger Jr.

Insecta Mundi

A new species, Brachycerocoris woodruffi Eger, is described from Mindanao Island, Philippines. The new species is described, illustrated and compared to the two other species of Brachycerocoris Costa occurring in the Philippines, B. dromedarius (Vollenhoven) and B. davidii Roca-Cusachs and Salini.

Brachycerocoris Costa belongs to the Brachycerocoris group of the Podopinae (Rider et al. 2018) and is represented in Africa by three species, B. afer Stål 1876, B. congoanus Schouteden 1905, and B. patrizii Mancini 1939. The genus has historically contained just two species in the Oriental region, B. camelus Costa 1863, described from China, and B. dromedarius (Vollenhoven 1863), …

New Fossil False Click-Beetles From The Americas (Coleoptera: Eucnemidae), Jyrki Muona

Insecta Mundi

One new genus and three new false click-beetle species (Coleoptera: Eucnemidae) are described from American fossil resins: Neusiokia new genus, type species Neusiokia appalachiensis new species (North Carolina resin), Thambus woodruffi new species (Dominican resin) and Asiocnemis colombicus new species (Colombian resin).

Seventy-two fossil species are included in the family Eucnemidae presently. Half of them, 36, are based on Baltic amber materials (Muona 1993a; Muona 2021), 22 are from Myanmar amber deposits (Li et al. 2020; Muona 2020; Otto 2019) and 10 are mineral fossils, nine of these from China (Chang et al. 2016; Muona et al. 2020; Li et …

Factors Contributing To Bee Decline, Ann Mull, Jaydee Gunnell, Sheriden M. Hansen, Ricardo Ramirez, Andree' Walker Bravo, Cody Zesiger, Lori R. Spears

All Current Publications

Bees provide an important ecosystem service by contributing to the pollination of crop and wild plant species. Many factors have been attributed to bee declines, including habitat loss, improper apiary management, pesticide usage, climate change, pests and pathogens, competition among native and introduced bee species, poor nutrition, and other factors (Koh et al., 2016; Goulson et al., 2015; Graves et al., 2020; Soroye et al., 2020). Acting together, these factors intensify the pressure for survival beyond the adaptability of many species. This fact sheet reviews the factors contributing to decline in bee populations and what can be done to protect …

Mobility Of Phosphine-Susceptible And -Resistant Rhyzopertha Dominica (Coleoptera: Bostrichidae) And Tribolium Castaneum (Coleoptera: Tenebrionidae) After Exposure To Controlled Release Materials With Existing And Novel Active Ingredients, Sabita Ranabhat, Kun Yan Zhu, Georgina Bingham, William R., Morrison Iii

Department of Entomology: Faculty Publications

There is interest in developing controlled release materials (CRMs) with novel modes of action to improve resistance management. Long-lasting insecticide-incorporated netting (LLIN) with deltamethrin has been effectively used against stored-product pests. Here, we evaluated the efficacy of different CRMs (LLIN or packaging) with each of four active ingredients (AI) (deltamethrin, permethrin, indoxacarb, and dinotefuran) and compared them to control CRMs in reducing movement and increasing mortality of phosphine-susceptible and -resistant Rhyzopertha dominica and Tribolium castaneum. Adults were exposed for 0.5, 2, or 60 min, and movement was assessed immediately or after 24, or 168 h using video-tracking and Ethovision …

Reactive Oxygen Species In Plant Interactions With Aphids, Fiona L. Goggins, Hilary D. Fischer

Entomology Faculty Publications and Presentations

Reactive oxygen species (ROS) such as hydrogen peroxide and superoxide are produced in plants in response to many biotic and abiotic stressors, and they can enhance stress adaptation in certain circumstances or mediate symptom development in others. The roles of ROS in plant-pathogen interactions have been extensively studied, but far less is known about their involvement in plant-insect interactions. A growing body of evidence, however, indicates that ROS accumulate in response to aphids, an economically damaging group of phloem-feeding insects. This review will cover the current state of knowledge about when, where, and how ROS accumulate in response to aphids, …

Insecticide Resistance In Australian Spodoptera Frugiperda (J.E. Smith) And Development Of Testing Procedures For Resistance Surveillance, Lisa Bird, Melina M. Miles, Adam Quade, Helen Spafford

Biosecurity Research Articles

Spodoptera frugiperda (J.E. Smith) is a highly invasive noctuid pest first reported in northern Australia during early 2020. To document current status of resistance in S. frugiperda in Australia, insecticide toxicity was tested in field populations collected during the first year of establishment, between March 2020 and March 2021. Dose-response was measured by larval bioassay in 11 populations of S. frugiperda and a susceptible laboratory strain of Helicoverpa armigera. Emamectin benzoate was the most efficacious insecticide (LC50 0.023μg/ml) followed by chlorantraniliprole (LC50 0.055μg/ml), spinetoram (LC50 0.098μg/ml), spinosad (LC50 0.526μg/ml), and methoxyfenozide (1.413μg/ml). Indoxacarb was the least toxic …

Mark-Recapture Study And Habitat Assessment For The Northern Metalmark Butterfly, Calephelis Borealis (Lepidoptera: Riodinidae), Weston J. Henry, Kristian S. Omland, Henry Frye, Wagner L. David

EEB Articles

Background: The northern metalmark (Calephelis borealis), is an exceedingly local, globally rare butterfly that is declining across the Midwestern and Northeastern USA. The principal stressors driving colony losses include afforestation and invasive plants that crowd out its larval hostplant (Packera ovata) and nectar resources.

Aims/Methods: To better understand its declines and guide restoration efforts, we 1) performed a mark-recapture study in Connecticut to document population trends where we were actively managing vegetation; 2) conducted a range-wide survey for evidence of phylogeographic structure, using cytochrome oxidase (CO1); 3) investigated abundance determinants of its larval foodplant, Packera ovata …

Mosquito Survey In Tizi-Ouzou (Algeria Northern): Updated Inventory With New Reports, Soumeya Chahed, Hania Belkacem, Lynda Boukhari, Karima Brahmi

Journal of Bioresource Management

Mosquitoes play an important role in public health, they are responsible for the transmission of pathogens that cause infectious diseases to both humans and animals. The study of this fauna biodiversity is necessary to determine the vector species of diseases. Our inventory of mosquitoes in Tizi-Ouzou province has been updated in this study, it was carried out from April to September, 2021 at 43 breeding sites, spread over ten different communes. The inventory was based on the sampling of larvae and the capture of adults on human bait. The identification of Culicidae inventoried revealed the presence of 14 species belonging …

A Versatile Contribution Of Both Aminopeptidases N And Abc Transporters To Bt Cry1ac Toxicity In The Diamondback Moth, Dan Sun, Liuhong Zhu, Le Guo, Shaoli Wang, Qingjun Wu, Neil Crickmore, Xuguo Zhou, Alejandra Bravo, Mario Soberón, Zhaojiang Guo, Youjun Zhang

Entomology Faculty Publications

BACKGROUND: Biopesticides and transgenic crops based on Bacillus thuringiensis (Bt) toxins are extensively used to control insect pests, but the rapid evolution of insect resistance seriously threatens their effectiveness. Bt resistance is often polygenic and complex. Mutations that confer resistance occur in midgut proteins that act as cell surface receptors for the toxin, and it is thought they facilitate its assembly as a membrane-damaging pore. However, the mechanistic details of the action of Bt toxins remain controversial.

RESULTS: We have examined the contribution of two paralogous ABC transporters and two aminopeptidases N to Bt Cry1Ac toxicity in the diamondback moth, …

Mapk-Mediated Transcription Factor Gatad Contributes To Cry1ac Resistance In Diamondback Moth By Reducing Pxmalp Expression, Le Guo, Zhouqiang Cheng, Jianying Qin, Dan Sun, Shaoli Wang, Qingjun Wu, Neil Crickmore, Xuguo Zhou, Alejandra Bravo, Mario Soberón, Zhaojiang Guo, Youjun Zhang

Entomology Faculty Publications

The benefits of biopesticides and transgenic crops based on the insecticidal Cry-toxins from Bacillus thuringiensis (Bt) are considerably threatened by insect resistance evolution, thus, deciphering the molecular mechanisms underlying insect resistance to Bt products is of great significance to their sustainable utilization. Previously, we have demonstrated that the down-regulation of PxmALP in a strain of Plutella xylostella (L.) highly resistant to the Bt Cry1Ac toxin was due to a hormone-activated MAPK signaling pathway and contributed to the resistance phenotype. However, the underlying transcriptional regulatory mechanism remains enigmatic. Here, we report that the PxGATAd transcription factor (TF) is responsible for the …

Reproductive Diapause In The Ladybird Beetle Cycloneda Munda, John J. Obrycki

Lady Beetle Research Data

Adult Cycloneda munda were collected from Fayette County, Kentucky (38.12°N, 84.54°W). Eggs were collected daily from 4 to 6 females and placed in L:D 16:8, 14:10, 12:12,10:14, at 22°C ± 1.0°C. F1 offspring were individually reared in glass vials at each photoperiod on pea aphids and Ephestia kuehniella eggs to examine the effects of photoperiod on development (Data file 1: C-munda-Dev-Times-at-LD.jmp). Comparisons of the developmental responses to the four LD treatments were made. Pairs of F1 Cycloneda munda adults were maintained at the same larval photoperiod. Pairs were fed and maintained at each photoperiod for 110 days. The date of …

2018 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino

Midsouth Entomologist

Estimated insect management costs and losses for multiple insect pests of rice during the 2018 growing season were compiled for 5 rice-producing states. Participating states included Arkansas, California, Louisiana, Mississippi, and Texas, accounting for approximately 90% of the rice grown in the US. Overall, insects accounted for more than $141 million in costs and losses during 2017, averaging $52.06 per acre. Rice water weevil and rice stink bug caused more yield loss, and cost more to control than all other insect pests across participating states.

2020 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino, M. T. Vanweelden

Midsouth Entomologist

Insects have the potential to reduce quality and yield in rice throughout the US. It is important to document these reductions over time to determine shifts in control costs and pest densities. Estimates of the costs and losses associated with multiple insect pests of rice were compiled for 6 rice-producing states. Participating states included Arkansas, California, Florida, Louisiana, Mississippi, and Texas, which account for approximately 90% of the rice grown in the US. Overall, insects accounted for over $340 million in costs and losses during 2020, averaging over $120 per acre. Rice water weevil and rice stink bug accounted for …

2021 Soybean Insect Losses In The United States, Fred R. Musser, Angus L. Catchot Jr., Jeffrey A. Davis, Christina Difonzo, Scott H. Graham, Jeremy K. Greene, Bryan Jensen, David L. Kerns, Robert L. Koch, David Owens, Dominic D. Reisig, Phillip M. Roberts, Tom A. Royer, Nicholas J. Seiter, Scott D. Stewart, Sally V. Taylor, Benjamin C. Thrash, Kelley J. Tilmon, Raul T. Villanueva

Midsouth Entomologist

Estimated insect management costs and losses due to insects in soybean during the 2021 growing season were collected and compiled from 18 states to provide a record of insect pressure and management practices for the year. These annual estimates provide a historical record of pest pressure and insect management and have been compiled in some states since 2004. Participating states represented 47% of soybean acreage grown in the United States, with near 100% participation in southern states. Overall, the stink bug complex was the costliest insect pest in soybean followed by corn earworm. Total insect management costs were $18.53 per …

Determining Yield Effects Of Simulated Stand Loss In Field Corn (Zea Mays), T. B. Towles, A. L. Catchot, J. Gore, D. R. Cook, M. A. Caprio, C. Daves, W. D. Crow, B. Thrash, B. Thrash, N. R. Bateman

Midsouth Entomologist

The corn borer complex, consisting of Diatraea grandiosella (Dyar), Ostrinia nubilalis (Hübner), and D. saccharalis (F.), poses a risk to field corn that is not protected through the use of foliar-applied insecticides or Bacillus thuringiensis (Bt) proteins incorporated into the plant's genetics. In the southern U.S., corn borers have been adequately controlled through the widespread planting of Bt corn hybrids. Refuge systems have been implemented to prevent the selection of Bt-resistant populations in target species. Historically, structured refuge compliance among corn producers has been low, leading to the commercialization of seed blended refugia in areas of the U.S. where cotton …

2019 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino, M. T. Vanweelden

Midsouth Entomologist

Estimates of the costs and losses associated with multiple insect pests of rice were compiled for 6 rice-producing states. Participating states included Arkansas, California, Florida, Louisiana, Mississippi, and Texas, accounting for approximately 90% of the rice grown in the US. Overall, insects accounted for nearly $269 million in costs and losses during 2019, averaging $113.43 per acre. Rice water weevil caused more yield loss than all other insect pests across all participating states, followed by rice stink bug and rice billbug.

Abstracts Of The 11th Annual Mississippi Association Of Entomologists, Nematologists, And Plant Pathologists Meeting, October 31 – November 1, 2022, Mississippi Association Of Entomologists, Nematologists, And Plant Pathologists

Midsouth Entomologist

No abstract provided.

Repellency Of Wild Oregano Plant Volatiles, Plectranthus Amboinicus, And Their Essential Oils To The Silverleaf Whitefly, Bemisia Tabaci, On Tomato, Cyrane Pouët, Emilie Deletre, Béatrice Rhino

All Peer-Reviewed Publications

The Bemisia tabaci (Gennadius) whitefly is a major economically damaging pest of many crops such as tomato (Solanum lycopersicum L.). Pesticides are widely used to control B. tabaci while the use of aromatic plants is an alternative control method. The aim of this study was to assess the B.tabaci repellent effect of wild oregano, Plectranthus amboinicus (Lour.) Spreng, a widespread aromatic plant in the West Indies. We tested three origins of wild oregano, including northern, central, and southern Martinique (French West Indies). Our results showed that all essential oils of wild oregano had either masking properties or were true repellents—the …