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Articles 181 - 199 of 199
Full-Text Articles in Life Sciences
Larra BicolorFabricius (Hymenoptera: Crabronidae): Its Distribution Throughout Florida, J. H. Frank, N. C. Leppla, R. K. Sprenkel, A. C. Blount, R. F. Mizell, Iii
Larra BicolorFabricius (Hymenoptera: Crabronidae): Its Distribution Throughout Florida, J. H. Frank, N. C. Leppla, R. K. Sprenkel, A. C. Blount, R. F. Mizell, Iii
Insecta Mundi
We document the presence of Larra bicolor Fabricius (Hymenoptera: Crabronidae) in 46 of Florida’s 67 counties. The species is represented by two stocks. The first (released in 1981) originated in Pará, Brazil, but was obtained from Puerto Rico, and became established in Broward County in southern Florida. The second (released in 1988) originated in Santa Cruz de la Sierra, Bolivia, and became established in Alachua County in northern Florida. The Bolivian stock, aided by additional satellite releases from Alachua County, is now widely distributed. The species probably occupies all counties in central and northern Florida, but may yet be absent …
A Revision Of The Genus Haroldiataenius Chalumeau (Scarabaeidae: Aphodiinae: Eupariini), Z. Teresa Stebnicka, Paul E. Skelley
A Revision Of The Genus Haroldiataenius Chalumeau (Scarabaeidae: Aphodiinae: Eupariini), Z. Teresa Stebnicka, Paul E. Skelley
Insecta Mundi
The genus Haroldiataenius Chalumeau, 1981 (Aphodiinae: Eupariini) from southern United States, Mexico, and Central America is revised and nine species are recognized. The subgeneric name Sayloria Chalumeau, 1981 is synonymized with Haroldiataenius (sensu stricto) and Ataenius sabinoi Cartwright, 1974 is synonymized with A. lucanus Horn, 1871. Five species are transferred to Haroldiataenius from the genus Ataenius Harold creating the following new combinations: H. convexus (Robinson), H. griffini (Cartwright), H. lucanus (Horn), H. saramari (Cartwright), and H. semipilosus (Van Dyke). One new species, Haroldiataenius buvexus is described from Texas, USA. A key to species of Haroldiataenius is included and …
Hexapod Herald - Vol. 21, No. 1, January 2009
Hexapod Herald - Vol. 21, No. 1, January 2009
Hexapod Herald and Other Entomology Department Newsletters
Contents:
Congratulations
Welcome
Grants
Publications
Student News
Condolences
Faculty News
From the Office
Travel
Categorization And Indentification Of Mechanisms Of Sugarcane Resistance To The Sugarcane Aphid (Hemiptera: Aphididae), Waseem Akbar
Categorization And Indentification Of Mechanisms Of Sugarcane Resistance To The Sugarcane Aphid (Hemiptera: Aphididae), Waseem Akbar
LSU Doctoral Dissertations
Sugarcane in Louisiana is colonized and sometimes heavily infested by two aphid species, the sugarcane aphid, Melanaphis sacchari (Zehntner), and the yellow sugarcane aphid,Sipha flava(Forbes). Melanaphis sacchari, the main vector of sugarcane yellow leaf virus, is distributed throughout Louisiana’s sugarcane-growing regions. Five cultivars representing 90% of the commercial acreage in Louisiana (LCP 85-384, HoCP 91-555, Ho 95-988, HoCP 96-540,L 97-128) were evaluated for resistance to aphids in the greenhouse. Antibiosis was the primary category of resistance to both aphid species. Based on the intrinsic rate of natural increase, L 97-128 and HoCP 91-555 were comparatively susceptible and resistant cultivars, respectively. …
Dichotomius Maya Peraza And Deloya, 2006 (Coleoptera: Scarabaeidae: Scarabaeinae: Coprini) In Belize, A New Country Record For This Central American Dung Beetle, Conrad P. D. T. Gillett
Dichotomius Maya Peraza And Deloya, 2006 (Coleoptera: Scarabaeidae: Scarabaeinae: Coprini) In Belize, A New Country Record For This Central American Dung Beetle, Conrad P. D. T. Gillett
Insecta Mundi
Abstract. Dichotomius maya Peraza and Deloya, 2006 is reported for the first time from Belize. New biological and distributional data are presented and the species is illustrated for the first time.
Résumé. Dichotomius maya Peraza and Deloya, 2006 est signalé pour la première fois de Bélize. Nouvelles données sur sa biologie et repartition sont présentés et cette espèce est illustrée pour la première fois.
Taxonomic Redefinition Of The Genera Parataenius Balthasar And Pseudataenius Brown, With Descriptions Of Three New Species (Scarabaeidae: Aphodiinae: Eupariini), Z. Teresa Stebnicka, Paul E. Skelley
Taxonomic Redefinition Of The Genera Parataenius Balthasar And Pseudataenius Brown, With Descriptions Of Three New Species (Scarabaeidae: Aphodiinae: Eupariini), Z. Teresa Stebnicka, Paul E. Skelley
Insecta Mundi
The New World euparine scarab genera Parataenius Balthasar, 1961 and Pseudataenius Brown, 1927 are revised. Ataenius brunneus Schmidt is transferred to the genus Parataenius becoming Parataenius brunneus (Schmidt), new combination. The monospecific genus Ataenioides Petrovitz, 1973, is synonymized with Pseudataenius Brown, 1927, (new synonymy) and the type species, Ataenioides gracilitarsis Petrovitz, is given the new combination Pseudataenius gracilitarsis (Petrovitz). New species of Parataenius are described from southern South America: Parataenius selvae, P. estero, and P. martinezi. Keys for species of both genera are presented and pertinent morphological details are illustrated.
A New Generic And New Specific Synonym In The Genus Euphoria Burmeister (Coleoptera: Scarabaeidae: Cetoniinae: Cetoniini), Jesus Orozco
A New Generic And New Specific Synonym In The Genus Euphoria Burmeister (Coleoptera: Scarabaeidae: Cetoniinae: Cetoniini), Jesus Orozco
Insecta Mundi
Abstract. Based on a study of the characters used to define it, the genus Euphoriopsis Casey is placed in synonymy with Euphoria Burmeister. Euphoria punicea Janson is placed in synonymy with Euphoria steinheili Janson. Morphological characters supporting the synonymies, and the species’ distributions and biological data are reviewed.
Resúmen. Basado en un estudio de los caracteres que fueron usados para definirlo, el género Euphoriopsis Casey es considerado como sinónimo del genero Euphoria Burmeister. Euphoria punicea Janson es a su vez considerada sinónimo de Euphoria steinheili Janson. Se presenta una discusión soportando la logica de los cambios propuestos y datos sobre …
Experimental And Natural Variation In Hovering Flight Capacity In Bees, Hymenoptera: Apidae, Jason Thomas Vance
Experimental And Natural Variation In Hovering Flight Capacity In Bees, Hymenoptera: Apidae, Jason Thomas Vance
UNLV Theses, Dissertations, Professional Papers, and Capstones
In honey bees, the capacity for flight underlies many behaviors which impact fitness and longevity, such as the ability to forage or evade predators. However, flight capacity is not fixed across bees' lifespan, which is punctuated by a suite of physiological changes that accompany age and the transition from in-hive to foraging behaviors; thus, flight capacity may vary during periods of development, senescence, or in response to morphological damage such as wing wear. This dissertation describes the biomechanics and aerodynamics which contribute to the scope of honey bee flight performance, and investigates how age, behavioral development, and wing-wear affects flight …
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Faculty Research & Creative Activity
Traps containing a combination floral and synthetic pheromone lure are used to monitor and manage Japanese beetles, Popillia japonica Newman (Coleoptera: Scarabaeidae). One key factor limiting trap effectiveness for beetle control is the "trap spillover" phenomenon, in which the trap attracts beetles without capturing them, resulting in increased damage to surrounding host plants. We investigated the mechanisms underlying trap spillover by conducting two studies in a soybean field in east central Illinois. In the first study, we set up trap stations for 1 d and compared the sex, size, and egg load (for females) of beetles caught in the traps …
Survivorship, Tunneling And Feeding Behaviors Of Formosan Subterranean Termite (Isoptera: Rhinotermitidae) In Response To Trans-Caryophyllene, Qiaoling Qi
LSU Master's Theses
The Formosan subterranean termite, Coptotermes formosanus Shiraki, an invasive species from southern China, is one of the most destructive wood pests in the United States. Presently, termites are managed through chemical control. However, some synthetic chemicals cause serious environmental problems due to their persistence and toxicity. There is growing interest in using natural compounds with low toxicity to mammals to control termites. Trans-caryophyllene is a component of essential oil found in many flowering plants. It is especially abundant in clove oil. It has also been found to be released from the roots of maize damaged by insects. I investigated caryophyllene …
Effects Of Acephate On The Distribution Of Tarnished Plant Bugs Within The Cotton Plant Profile, Kyle Andrew Fontenot
Effects Of Acephate On The Distribution Of Tarnished Plant Bugs Within The Cotton Plant Profile, Kyle Andrew Fontenot
LSU Master's Theses
The tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), is a primary pest of cotton in the mid-southern United States. Chemical control strategies are the primary integrated pest management tool used to manage this pest in cotton. A better understanding of tarnished plant bug behavior and distribution on cotton plants is needed to improve the scouting and monitoring protocols used to estimate population and crop injury levels needed to initiate treatments. This pest frequently re-infests fields after insecticide treatments. Sampling protocols should consider the sub-lethal effects of insecticides on migrating populations or on survivors that remain on insecticide-treated plants. Studies …
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Patrick Enstrom, Carissa Schoenick
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Patrick Enstrom, Carissa Schoenick
Faculty Research & Creative Activity
Traps containing a combination floral and synthetic pheromone lure are used to monitor and manage Japanese beetles, Popillia japonica Newman (Coleoptera: Scarabaeidae). One key factor limiting trap effectiveness for beetle control is the "trap spillover" phenomenon, in which the trap attracts beetles without capturing them, resulting in increased damage to surrounding host plants. We investigated the mechanisms underlying trap spillover by conducting two studies in a soybean field in east central Illinois. In the first study, we set up trap stations for 1 d and compared the sex, size, and egg load (for females) of beetles caught in the traps …
Colorado Potato Beetle Management On Potatoes: Current Challenges And Future Prospects., Andrei Alyokhin
Colorado Potato Beetle Management On Potatoes: Current Challenges And Future Prospects., Andrei Alyokhin
Andrei Alyokhin
The Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) is the most important insect defoliator of potatoes that can completely destroy potato crops. Its current range covers about 16 million km2 in North America, Europe, and Asia and continues to expand. A complex and diverse life history, combined with an impressive ability to develop insecticide resistance, make the Colorado potato beetle a challenging pest to manage. Beetle populations on commercial farms are usually suppressed by insecticides, which are likely to remain the predominant approach for the foreseeable future. In addition, the beetles can be controlled through the use of relatively …
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Warren G. Abrahamson, II
The palmettos Serenoa repens and Sabal etonia are crucial foundation species in many peninsular Florida vegetative associations. We monitored the survival and growth of individual palmetto seedlings using two cohorts found in different vegetative associations. Seedling cohorts containing both S. repens and S. etonia were individually tagged in 1989 and have been monitored until 2008, a period of 19 years. One cohort (N = 100 seedlings) occurs in a xeric, “inopina-phase” scrubby flatwoods and a second cohort (N =78 seedlings) lives in a well-drained, “wiregrass-phase” flatwoods. The soils at both sites are very nutrient-poor Entisols that show rapid permeability, low …
Stimulatory And Suppressive Effects Of Novaluron On The Colorado Potato Beetle Reproduction., Andrei Alyokhin, Ryan Guillemette, Raymond Choban
Stimulatory And Suppressive Effects Of Novaluron On The Colorado Potato Beetle Reproduction., Andrei Alyokhin, Ryan Guillemette, Raymond Choban
Andrei Alyokhin
The Colorado potato beetle, Leptinotarsa decemlineata (Say), is one of the most damaging insect pests of potato. Novaluron is a relatively new benzoylphenyl urea insect growth regulator with good activity against this pest. Earlier studies revealed that feeding on potato foliage treated with novaluron induces reversible egg hatch inhibition in adult Colorado potato beetles. We investigated if novaluron effects depend on physiological state of the beetles at the time of exposure. The following four treatments were created: young beetles unmated at the beginning of the experiment and feeding on potato foliage treated with novaluron, young beetles unmated at the beginning …
Interactions Of Native And Non-Native Lady Beetle Species (Coleoptera: Coccinellidae) With Aphid-Tending Ants In Laboratory Arenas, Christy Finlayson, Andrei Alyokhin, Erin Porter
Interactions Of Native And Non-Native Lady Beetle Species (Coleoptera: Coccinellidae) With Aphid-Tending Ants In Laboratory Arenas, Christy Finlayson, Andrei Alyokhin, Erin Porter
Andrei Alyokhin
Interactions between lady beetles and the European fire ant (Myrmica rubra L.) tending potato aphids [Macrosiphum euphorbiae (Thomas)] were compared in the laboratory. Lady beetle species native to North America (Coccinella trifasciata perplexa Mulsant, Coleomegilla maculata lengi Timberlake, Hippodamia convergens Guerin-Meneville) and non-native species of Palearctic origin [Coccinella septempunctata L., Harmonia axyridis (Pallas), Hippodamia variegata (Goeze), Propylea quatuordecimpunctata L.)] were evaluated. Harmonia axyridis consumed a significantly greater number of aphids compared with all other species but C. septempunctata. Ant stings affected H. variegata and C. septempunctata to a greater extent than other species. Ants showed a significantly greater amount of …
Predation On Pupa Of Chrysomya Rufifacies (Marquart) (Diptera: Calliphoridae) By Parasitoid, Exoristobia Philippinensis Ashmead (Hymenoptera: Encyrtidae) And Ophyra Spinigera Larva (Diptera: Muscidae), Chen Chee Dhang
Chen Chee Dhang
A forensic entomological study was conducted using monkey carcasses (Macaca fascicularis Raffles) that were placed in either an outdoor or indoor environment at a coastal area in Tanjung Sepat, Selangor, Malaysia during May until August 2008. We collected pupae of Chrysomya rufifacies (Marquart) from the carcasses and kept them individually. The emergence of 13 parasitic microhymenopteran, from one of the pupae occurring within a week were identified as Exoristobia philippinensis Ashmead (Hymenoptera: Encyrtidae). Another observation was made whereby a pupa of C. rufifacies was predated by a muscid larva, Ophyra spinigera (Stein). The larva squeezed into the pupa and consumed …
Towards A New Paradigm In Mayfly Phylogeny (Ephemeroptera): Combined Analysis Of Morphological And Molecular Data, T. Heath Ogden
Towards A New Paradigm In Mayfly Phylogeny (Ephemeroptera): Combined Analysis Of Morphological And Molecular Data, T. Heath Ogden
T. Heath Ogden
This study represents the first formal morphological and combined (morphological and molecular) phylogenetic analyses of the order Ephemeroptera. Taxonomic sampling comprised 112 species in 107 genera, including 42 recognized families (all major lineages of Ephemeroptera). Morphological data consisted of 101 morphological characters. Molecular data were acquired from DNA sequences of the 12S, 16S, 18S, 28S and H3 genes. The Asian genus Siphluriscus (Siphluriscidae) was supported as sister to all other mayflies. The lineages Carapacea, Furcatergalia, Fossoriae, Pannota, Caenoidea and Ephemerelloidea were supported as monophyletic, as were many of the families. However, some recognized families (for example, Ameletopsidae and Coloburiscidae) and …
Combined Morphological And Molecular Phylogeny Of Ephemerellidae (Ephemeroptera), T. Heath Ogden
Combined Morphological And Molecular Phylogeny Of Ephemerellidae (Ephemeroptera), T. Heath Ogden
T. Heath Ogden
This study represents the first combined molecular and morphological analysis for the mayfly family Ephemerellidae (Ephemeroptera), with a focus on the relationships of genera and species groups of the subfamily Ephemerellinae. The phylogeny was constructed based on DNA sequence data from 3 nuclear (18S rDNA, 28S rDNA, histone H3) and 2 mitochondrial (12S rDNA, 16S rDNA) genes, and 23 morphological characters. Taxon sampling for Ephemerellidae included exemplars from all 25 extant genus groups and additional representatives from those genera with the highest diversity. Ephemerellidae appears to consist of three major clades. Ephemerella, the largest genus of Ephemerellidae, and Serratella were …