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Articles 31 - 55 of 55
Full-Text Articles in Entomology
Two Sugar Isomers Influence Host Plant Acceptance By A Cereal Caterpillar Pest, G. Juma, M. Thiongo, L. Dutaur, K. Rharrabe, F. Marion-Poll, B. Le Ru, G. Magoma, J. F. Silvain, P. A. Calatayud
Two Sugar Isomers Influence Host Plant Acceptance By A Cereal Caterpillar Pest, G. Juma, M. Thiongo, L. Dutaur, K. Rharrabe, F. Marion-Poll, B. Le Ru, G. Magoma, J. F. Silvain, P. A. Calatayud
All Peer-Reviewed Publications
Abstract Plant sugars are often considered as primary feeding stimuli, conditioning host plant acceptance by herbivorous insects. Of the nine sugars identified from methanolic extracts of seven grass species, only turanose, a sucrose isomer, was negatively correlated with the survival and growth of the noctuid larva of cereal stemborer, Busseola fusca. Sucrose was the most abundant sugar, although it did not vary significantly in concentration among the plant species studied. Using Styrofoam™ cylinders impregnated with increasing concentrations of turanose or sucrose, the two sugars had opposing effects: turanose appeared phagodeterrent while sucrose was phagostimulatory. Electrophysiological studies indicated that B. fusca …
Fluid Uptake By The Lepidopteran Proboscis In Relation To Structure, Karena Kwauk
Fluid Uptake By The Lepidopteran Proboscis In Relation To Structure, Karena Kwauk
All Theses
Three species of butterflies--eastern tiger swallowtail (Papilio glaucus L.), monarch (Danaus plexippus L.), and painted lady (Vanessa cardui L.)--were used to investigate the effect that exposing multiple regions of the proboscis to fluid has on feeding rate. Although the lepidopteran proboscis historically has been considered a sealed tube with a specialized region near the tip for fluid uptake, droplets of 1% sucrose solution were shown to enter multiple locations along the proboscis. Feeding experiments were conducted comparing fluid uptake rates of butterflies with their proboscises either fully or partially submerged in 1% or 15% sucrose solutions. Only one significant relationship …
Molecular Identification Of Synanthedonini Members (Lepidoptera: Sesiidae) Using Cytochrome Oxidase I, Jason A. Hansen, William E. Klingeman, J. Kevin Moulton, Jason B. Oliver, Mark T. Windham, Aijun Zhang, Robert N. Trigiano
Molecular Identification Of Synanthedonini Members (Lepidoptera: Sesiidae) Using Cytochrome Oxidase I, Jason A. Hansen, William E. Klingeman, J. Kevin Moulton, Jason B. Oliver, Mark T. Windham, Aijun Zhang, Robert N. Trigiano
Agricultural and Environmental Sciences Faculty Research
Many North American sesiid moths within Synanthodonini have been studied extensively because their feeding activity can cause detrimental economic and esthetic impacts to many commercially important ornamental and native plant species. Recent discoveries of nonnative clearwing moth pest introductions [e.g., Synanthedon myopaeformis (Borkh.)], reinforce the need for reliable and accurate molecular diagnostic tools that can be used by nontaxonomic experts, particularly when juvenile life stages are recovered from infested host-plant tissues. Cytochrome oxidase I (cox I) previously has been used to successfully identify species and resolve species complexes. In this study, the cox I phylogeny inferred from sequences generated from …
An Annotated List Of The Lepidoptera Of Honduras, Jacqueline Y. Miller, Deborah L. Matthews, Andrew D. Warren, M. Alma Solis, Donald J. Harvey, Patricia Gentili-Poole, Robert Lehman, Thomas C. Emmel, Charles V. Covell
An Annotated List Of The Lepidoptera Of Honduras, Jacqueline Y. Miller, Deborah L. Matthews, Andrew D. Warren, M. Alma Solis, Donald J. Harvey, Patricia Gentili-Poole, Robert Lehman, Thomas C. Emmel, Charles V. Covell
Insecta Mundi
A biodiversity inventory of the Lepidoptera of Pico Bonito National Park and vicinity, in the Department of Atlantida of northern Honduras, was initiated in 2009 to obtain baseline data. We present a revised checklist of Honduran butterfly species (updated from the initial 1967 lists), as well as the first comprehensive list of Honduran moths. Our updated list includes 550 species of Papilionoidea, 311 Hesperioidea, and 1,441 moth species.
Evaluating The Efficacy Of Methoxyfenozide On Louisiana, Texas And The Mid-Southern Soybean Looper Populations, Sebe Anthony Brown
Evaluating The Efficacy Of Methoxyfenozide On Louisiana, Texas And The Mid-Southern Soybean Looper Populations, Sebe Anthony Brown
LSU Master's Theses
The soybean looper, Chrysodeixis includens (Walker), is a defoliating insect pest of soybean in the Mid-South and Texas. In 2008, Louisiana producers reported unsatisfactory control of soybean loopers in soybean with methoxyfenozide. In 2009 and 2010, field collections from Louisiana, Missouri, Mississippi and Texas were exposed to discriminating concentrations (0.020 to 5.000 ai ìg/ml) of methoxyfenozide in diet incorporation bioassays. All field colonies were compared to a reference strain LC50 of 0.007 ìg/ml for 2009 and 0.008 ìg/ml for 2010. Louisiana populations exhibited LC50’s of 0.079 ìg/ml and 0.122 ìg/ml for 2009 and 2010, respectively, which were the highest values …
A New Genus Of Agathidinae With The Description Of A New Species Parasitic On Samea Multiplicalis (Guenée), Michael J. Sharkey, Katherine A. Parys, Stephanie Clutts
A New Genus Of Agathidinae With The Description Of A New Species Parasitic On Samea Multiplicalis (Guenée), Michael J. Sharkey, Katherine A. Parys, Stephanie Clutts
Entomology Faculty Publications
A new genus of Agathidinae (Hymenoptera, Braconidae), Neothlipsis, is proposed to include 10 species. Nine of these species were formerly included in the polyphyletic genus Therophilus Wesmael 1837, formerly referred to as Bassus. A new species, Neothlipsis parysae, parasitic on Samea multiplicalis (Guenée), is described. The ten described species transferred to Neothlipsis are:, Neothlipsis agathoides, comb. n. for Bassus agathoides Newton and Sharkey 2000; Neothlipsis agilis, comb. n. for Bassus agilis Cresson 1868; Neothlipsis brevicauda, comb. n. for Bassus brevicaudus Muesebeck 1932; Neothlipsis californica, comb. n. for Bassus californicus Muesebeck 1927; Neothlipsis cincta, comb. n. for Microdus …
Lytopylus Förster (Hymenoptera, Braconidae, Agathidinae) Species From Costa Rica, With An Emphasis On Specimens Reared From Caterpillars In Area De Conservación Guanacaste, Michael J. Sharkey, Stephanie Clutts, Erika M. Tucker, Daniel Janzen, Winnie Hallwachs, Tanya Dapkey, M. Alex Smith
Lytopylus Förster (Hymenoptera, Braconidae, Agathidinae) Species From Costa Rica, With An Emphasis On Specimens Reared From Caterpillars In Area De Conservación Guanacaste, Michael J. Sharkey, Stephanie Clutts, Erika M. Tucker, Daniel Janzen, Winnie Hallwachs, Tanya Dapkey, M. Alex Smith
Entomology Faculty Publications
Twelve species of Costa Rican Lytopylus are treated; these include all species reared from Lepidoptera caterpillars in Area de Conservación Guanacaste, Costa Rica, over 32 years of caterpillar inventory, as well as two species recorded in the literature as occurring in Costa Rica. Ten new species are described, i.e., Lytopylus bradzlotnicki, Lytopylus colleenhitchcockae, Lytopylus gregburtoni, Lytopylus jessicadimauroae, Lytopylus jessiehillae, Lytopylus mingfangi, Lytopylus rebeccashapleyae, Lytopylus robpringlei, Lytopylus sandraberriosae, Lytopylus vaughntani. The following species are transferred to Lytopylus: Metriosoma flavicalcar Enderlein 1920 to Lytopylus flavicalcarcomb. n.; Bassus macadamiae Briceño and Sharkey 2000 to Lytopylus macadamiaecomb. n.; Metriosoma bicarinatum Enderlein 1920 to Lytopylus …
Efficacy Of Cotton Expressing Pyramided Bacillus Thuringiensis Insecticidal Proteins Against Lepidopteran Pest, D. S. Akin, S. D. Stewart, M. B. Layton, J. A. Mills
Efficacy Of Cotton Expressing Pyramided Bacillus Thuringiensis Insecticidal Proteins Against Lepidopteran Pest, D. S. Akin, S. D. Stewart, M. B. Layton, J. A. Mills
Midsouth Entomologist
Laboratory, greenhouse, and field experiments were conducted to evaluate the efficacy of cotton (Gossypium hirsutum L.) expressing two proteins of Bacillus thuringiensis Berliner (‘Bollgard II’ expressing Cry1Ac + Cry2Ab, Monsanto Company, St. Louis, MO) against economically important lepidopteran pests in Mississippi. Results from leaf assays conducted in the laboratory indicate that Bollgard II cotton caused significantly higher mortality and growth inhibition of Helicoverpa zea (Boddie), Heliothis virescens (F.), Spodoptera frugiperda (J.E. Smith), S. exigua (Hubner), Pseudoplusia includes (Walker), and Estigmene acrea (Drury) than Cry1Ac onlyand non-Bt cotton. In greenhouse studies, Bollgard II cotton provided significantly enhanced protection against common defoliating …
Host Recognition And Acceptance Behaviour In Cotesia Sesamiae And C. Flavipes (Hymenoptera: Braconidae), Parasitoids Of Gramineous Stemborers In Africa, Meshack Obonyo, Fritz Schulthess, Bruno Le Ru, Johnnie Van Den Berg, Paul André Calatayud
Host Recognition And Acceptance Behaviour In Cotesia Sesamiae And C. Flavipes (Hymenoptera: Braconidae), Parasitoids Of Gramineous Stemborers In Africa, Meshack Obonyo, Fritz Schulthess, Bruno Le Ru, Johnnie Van Den Berg, Paul André Calatayud
All Peer-Reviewed Publications
The host recognition and acceptance behaviour of two braconid larval parasitoids (Cotesia sesamiae and C. flavipes) were studied using natural stemborer hosts (i.e., the noctuid Busseola fusca for C. sesamiae, and the crambid Chilo partellus for C. flavipes) and a non-host (the pyralid Eldana saccharina). A single larva was introduced into an arena together with a female parasitoid and the behaviour of the wasp recorded until it either stung the larva or for a maximum of 5 min if it did not sting the larva. There was a clear hierarchy of behavioural steps, which was similar for both parasitoid species. …
Importance Of Contact Chemical Cues In Host Recognition And Acceptance By The Braconid Larval Endoparasitoids Cotesia Sesamiae And Cotesia Flavipes, Meshack Obonyo, Fritz Schulthess, Bruno Le Ru, Johnnie Van Den Berg, Jean François Silvain, Paul André Calatayud
Importance Of Contact Chemical Cues In Host Recognition And Acceptance By The Braconid Larval Endoparasitoids Cotesia Sesamiae And Cotesia Flavipes, Meshack Obonyo, Fritz Schulthess, Bruno Le Ru, Johnnie Van Den Berg, Jean François Silvain, Paul André Calatayud
All Peer-Reviewed Publications
The ability of the congeneric braconid parasitoids Cotesia sesamiae (Cameron) and Cotesia flavipes Cameron to discriminate between stemborer larval cues upon contact was studied using their natural hosts, namely the noctuid Busseola fusca (Fuller) and the crambid Chilo partellus (Swinhoe), respectively, and the pyralid non-host Eldana saccharina (Walker). When the natural host larvae were washed in distilled water, parasitoid behavior was similar to that displayed when in contact with E. saccharina, characterized by the absence of ovipositor insertion. When washed host or non-host larvae were bathed with water extracts of their natural host, the parasitoids showed a significant increase in …
Taxonomic Overview Of The Greater Fritillary Genus Speyeria Scudder And The Atlantis - Hesperis Species Complexes, With Species Accounts, Type Images, And Relevant Literature (Lepidoptera: Nymphalidae), James C. Dunford
Insecta Mundi
A taxonomic overview for the fritillary genus Speyeria Scudder (= Argynnis Fabricius) and its placement within the Heliconiinae (Nymphalidae) is presented. Taxonomic accounts, type images, and relevant literature for the 25 subspecies within the Speyeria atlantis (Edwards) and Speyeria hesperis (Edwards) complexes and the 16 nominate Speyeria species are included. Errors in nomenclature are identified, taxonomic, life history, and distributional information are updated, and type locality information is discussed. Images of primary type specimens for all 16 Speyeria species and the 25 subspecies in the atlantis - hesperis complexes appear together in color here for the first time. One new …
On-Plant Survival And Inheritance Of Resistance To Cry1ab Toxin From Bacillus Thuringiensis In A Field-Derived Strain Of European Corn Borer, Ostrinia Nubilalis, Andre L. B. Crespo, Terence A. Spencer, Analiza P. Alves, Richard L. Hellmich, Erin E. Blankenship, Leonardo C. Magalhães, Blair D. Siegfried
On-Plant Survival And Inheritance Of Resistance To Cry1ab Toxin From Bacillus Thuringiensis In A Field-Derived Strain Of European Corn Borer, Ostrinia Nubilalis, Andre L. B. Crespo, Terence A. Spencer, Analiza P. Alves, Richard L. Hellmich, Erin E. Blankenship, Leonardo C. Magalhães, Blair D. Siegfried
Department of Entomology: Faculty Publications
BACKGROUND: The high dose plus refuge is one of the major components of the resistance management plan mandated for transgenic corn expressing Cry toxins from Bacillus thuringiensis Berliner (Bt) that targets the European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae). This strategy was based on assumptions such as functional recessive inheritance, which has not been previously tested for O. nubilalis. The authors used a field-derived resistant strain of O. nubilalis to define the nature of resistance to Cry1Ab toxin by examining the inheritance and on-plant survival of susceptible and resistant insects and their F1 progeny.
RESULTS: The …
Variability In Pheromone Communication Among Different Haplotype Populations Of Busseola Fusca, A. E. Félix, G. Genestier, C. Malosse, P. A. Calatayud, B. Le Rü, J. F. Silvain, B. Frérot
Variability In Pheromone Communication Among Different Haplotype Populations Of Busseola Fusca, A. E. Félix, G. Genestier, C. Malosse, P. A. Calatayud, B. Le Rü, J. F. Silvain, B. Frérot
All Peer-Reviewed Publications
The relationship between pheromone composition and mitochondrial haplotype clades was investigated by coupling DNA analyses with pheromone identification and male mate searching behavior among different geographic populations of Busseola fusca. The within-population variations in pheromone blend were as great as those observed between geographic populations, suggesting that the female sex pheromone blend was not the basis of reproductive isolation between the geographic clades. Furthermore, while data from wind tunnel experiments demonstrated that most of the tested males were sensitive to small variations in pheromone mixture, there was considerable within-population variability in the observed response. The study identified a new pheromone …
Identification, Cloning And Expression Of A Cry1ab Cadherin Receptor From European Corn Borer, Ostrinia Nubilalis (Hübner) (Lepidoptera: Crambidae), Ronald D. Flannagan, Cao-Guo Yu, John P. Mathis, Terry E. Meyer, Xiaomei Shi, Herbert A. A. Siqueira, Blair D. Siegfried
Identification, Cloning And Expression Of A Cry1ab Cadherin Receptor From European Corn Borer, Ostrinia Nubilalis (Hübner) (Lepidoptera: Crambidae), Ronald D. Flannagan, Cao-Guo Yu, John P. Mathis, Terry E. Meyer, Xiaomei Shi, Herbert A. A. Siqueira, Blair D. Siegfried
Department of Entomology: Faculty Publications
Transgenic corn expressing the Cry1Ab toxin from Bacillus thuringiensis is highly toxic to European corn borer, Ostrinia nubilalis, larvae. A putative Cry1Ab receptor (OnBt-R1) molecule was cloned and sequenced from a cDNA library prepared from midgut tissue of O. nubilalis larvae. The 5.6 Kb gene is homologous with a number of cadherin genes identified as Cry1 binding proteins in other lepidopterans. Brush border membrane vesicles were prepared using dissected midguts from late instars. A 220-kDa protein was identified as a cadherin-like molecule, which bound to Cry1Ab toxin and cross-reacted with an anti-cadherin serum developed from recombinant expression of a …
Catalog Of The Type Specimens Of Gelechioidea (Lepidoptera) In The Collection Of The National Museum Of Natural History, Smithsonian Institution, Washington, Dc, John W. Brown, David Adamski, Ronald W. Hodges, Stephen M. Bahr Ii
Catalog Of The Type Specimens Of Gelechioidea (Lepidoptera) In The Collection Of The National Museum Of Natural History, Smithsonian Institution, Washington, Dc, John W. Brown, David Adamski, Ronald W. Hodges, Stephen M. Bahr Ii
USDA Systematic Entomology Laboratory
The collection of the National Museum of Natural History, Smithsonian Institution, Washington, D.C., is second only to that of The Natural History Museum (formerly British Museum of Natural History), London, in the number of type specimens of the superfamily Gelechioidea (Lepidoptera). The Smithsonian houses 1,375 gelechioid types: 1,249 holotypes, 48 lectotypes, 1 neotype, 69 species represented by one or more syntypes, and 8 species represented by one or more "pseudotypes" (Le., specimens identified as "type" by an accompanying label that are unlikely to be the type). Three former curators are responsible for the vast majority of the type specimens: August …
Chronic Exposure Of The European Corn Borer (Lepidoptera: Crambidae) To Cry1ab Bacillus Thuringiensis Toxin, Josette Chafaux, Maryvonne Seguin, Jeffrey J. Swanson, Denis Bourguet, Blair D. Siegfried
Chronic Exposure Of The European Corn Borer (Lepidoptera: Crambidae) To Cry1ab Bacillus Thuringiensis Toxin, Josette Chafaux, Maryvonne Seguin, Jeffrey J. Swanson, Denis Bourguet, Blair D. Siegfried
Department of Entomology: Faculty Publications
Transgenic corn expressing the insecticidal toxin from Bacillus thuringiensis Berliner is gaining support as an effective control technology for use against lepidopteran pests, particularly European corn borer, Ostrinia nubilalis Hubner (Lepidoptera: Crambidae). However, there is concern that widespread adoption of transgenic plants will rapidly lead to B. thuringiensis toxin resistance. Thus, long-term selection of O. nubilalis populations with the Cry1Ab B. thuringiensis toxin has been undertaken in several laboratories in the United States and in Europe. We present results from two independent selection experiments performed in laboratories at the University of Nebraska and at the Institut National de la Recherche …
A Taxonomic Study Of, And Key To, The Lecithoceridae (Lepidoptera) From Guizhou, China, Chunsheng Wu
A Taxonomic Study Of, And Key To, The Lecithoceridae (Lepidoptera) From Guizhou, China, Chunsheng Wu
The Taxonomic Report of the International Lepidoptera Survey
This paper provides a key to twelve species (in ten genera and three subfamilies) of Lecithoceridae from Guizhou Province, China. Among them, three species are unnamed and eight are new Guizhou Province records. The female of Opacoptera ecblasta Wu is known for the first time and its genitalia are illustrated for the first time.
Suitability Of Busseola Fusca And Sesamia Calamistis (Lepidoptera: Noctuidae) For The Development Of Two Populations Of Cotesia Sesamiae (Hymenoptera: Braconidae) In Kenya, A. J. Ngi-Song, W. A. Overholt, R. Stouthamer
Suitability Of Busseola Fusca And Sesamia Calamistis (Lepidoptera: Noctuidae) For The Development Of Two Populations Of Cotesia Sesamiae (Hymenoptera: Braconidae) In Kenya, A. J. Ngi-Song, W. A. Overholt, R. Stouthamer
All Peer-Reviewed Publications
The suitability of Sesamia calamistis Hampson and Busseola fusca (Fuller) for the development of two geographical populations of Cotesia sesamiae (Cameron) was examined in the laboratory. One population of the parasitoid was collected from the coast of Kenya and the other from the inland. Both populations of the parasitoid could develop on S. calamistis. On B. fusca, the inland population of C. sesamiae was able to develop, while the population from the coastal area of Kenya was encapsulated. Mating studies revealed that the two parasitoid populations were partially reproductively isolated. Unidirectional incompatibility, possibly caused by the Wolbachia infection, was observed …
Theclinae Of Rondonia, Brazil: Strymon Hubner, With Descriptions Of New Species (Lepidoptera: Lycaenidae), George T. Austin, Kurt Johnson
Theclinae Of Rondonia, Brazil: Strymon Hubner, With Descriptions Of New Species (Lepidoptera: Lycaenidae), George T. Austin, Kurt Johnson
Insecta Mundi
Twenty-two species of Strymon are known from the vicinity of Cacaulandia in Rondonia, Brazil, of which 14 are new species. These belong to 5 species groups: the “oreala” group [Strymon megarus (Godart)]; the “ziba” group [Strymon ziba (Hewiston), Strymon thulia (Hewitson), Strymon spinatus new species, Strymon latamaculus new species, Strymon pallidulus new species, Strymon tholus new species]; “valentina” group [Strymon rotundum new species]; “crossoca” group [Strymon crossoca (Hewiston), Strymon crambusa (Hewiston), Strymon germana new species, Strymon novasignum new species, Strymon clavus new species, Strymon implexus new species, Strymon …
Host Location And Acceptance By Cotesia Flavipes Cameron And C. Sesamiae (Cameron) (Hymenoptera: Braconidae), Parasitoids Of African Gramineous Stemborers: Role Of Frass And Other Host Cues, Adele J. Ngi-Song, William A. Overholt
Host Location And Acceptance By Cotesia Flavipes Cameron And C. Sesamiae (Cameron) (Hymenoptera: Braconidae), Parasitoids Of African Gramineous Stemborers: Role Of Frass And Other Host Cues, Adele J. Ngi-Song, William A. Overholt
All Peer-Reviewed Publications
Naive females of Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) were attracted, in a T-tube olfactometer, to volatile kairomones from frass produced by Chilo partellus (Swinhoe), Chilo orichalcociliellus Strand, Sesamia calamistis Hampson, and Busseola fusca (Fuller) fed on maize (Zea mays L.), sorghum [Sorghum bicolor (L.)], and napier grass (Pen. nisetum purpureum Schumach). In dual-choice tests, C. flavipes and C. sesamiae were generally unable to discriminate between volatiles from frass produced by any of the four different stemborer species fed on maize stalk. When larvae of C. partellus and S. calamistis were washed in distilled water, their acceptance by both …
Volatile Infochemicals Used In Host And Host Habitat Location By Cotesia Flavipes Cameron And Cotesia Sesamiae (Cameron) (Hymenoptera: Braconidae), Larval Parasitoids Of Stemborers On Graminae, Adele J. Ngi-Song, William A. Overholt, Peter G.N. Njagi, Marcel Dicke, Jonathan N. Ayertey, Wilbert Lwande
Volatile Infochemicals Used In Host And Host Habitat Location By Cotesia Flavipes Cameron And Cotesia Sesamiae (Cameron) (Hymenoptera: Braconidae), Larval Parasitoids Of Stemborers On Graminae, Adele J. Ngi-Song, William A. Overholt, Peter G.N. Njagi, Marcel Dicke, Jonathan N. Ayertey, Wilbert Lwande
All Peer-Reviewed Publications
Female Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) were attracted to odors in a Y-tube olfactometer from uninfested maize (Zea mays L.), sorghum [Sorghum bicolor (L.)]. and napier grass (Pennisetum purpureum Schumach). In dual choice tests. Cotesia flavipes showed a preference for maize over sorghum, while maize and napier grass were equally attractive. In contrast, Cotesia sesamiae preferred volatiles from sorghum and napier grass over those from maize. The two parasitoids were significantly more attracted to maize infested with the stemborers, Chilo partellus (Swinhoe), Chilo orichalcociliellus Strand, Sesamia calamistis Hampson, and Busseola fusca (Fuller), than uninfested maize. In dual choice …
Proximity Of Release Points Of Pheromone Components As A Factor Confusing Males Of The Spotted Stem Borer, Chilo Partellus, Approaching The Trap, Slawomir A. Lux, Ahmed Hassanali, Wilber Lwande, Florence N. Njogu
Proximity Of Release Points Of Pheromone Components As A Factor Confusing Males Of The Spotted Stem Borer, Chilo Partellus, Approaching The Trap, Slawomir A. Lux, Ahmed Hassanali, Wilber Lwande, Florence N. Njogu
All Peer-Reviewed Publications
The effect of proximity of the release points of the two pheromone components (Z)-11-hexadecenal and (Z)-11-hexadecen-1-ol of the spotted stem borer, Chilo partellus (Lepidoptera: Pyralidae) on behavior of the males and on trapping efficiency was investigated. Separating the dispensers of the two components in the trap by a mere 3 cm resulted in a threefold decrease in trap performance, compared to very close release of the components. The result is attributed to possible distortion of the pheromone signal, resulting in confused behavior of C. partellus males in the vicinity of the trap. The ethological and practical implications of the phenomenon …
Nebraska Butterflies, Stephen M. Spomer
Nebraska Butterflies, Stephen M. Spomer
University of Nebraska State Museum: Staff and Affiliates, Publications
Nebraska is a crossroads of butterfly diversity. Many species reach their distributional limits in Nebraska. The 100th meridian, which runs through central Nebraska, appears to be a good distributional limit for many species. In short, eastern Nebraska contains butterflies similar or identical to those found in most of the eastern United States, central Nebraska has both eastern and western butterflies, and western Nebraska has a butterfly fauna more like the Rocky Mountains or Black Hills. Over 200 species of butterflies have been recorded in Nebraska, which is a higher number than most of our neighboring states. Some of our butterflies …
Feeding Responses Of Chilo Partellus (Swinhoe) (Lepidoptera: Pyralidae) Larvae To Sorghum Plant Phenolics And Their Analogs, Baldwyn Torto, Ahmed Hassanali, Kailash N. Saxena, Sagary Nokoe
Feeding Responses Of Chilo Partellus (Swinhoe) (Lepidoptera: Pyralidae) Larvae To Sorghum Plant Phenolics And Their Analogs, Baldwyn Torto, Ahmed Hassanali, Kailash N. Saxena, Sagary Nokoe
All Peer-Reviewed Publications
Phagostimulatory responses of third-instar larvae of Chilo Partellus to phenolic components identified in an ethyl acetate extract of the leaf whorls of 3-week-old plants of Sorghum bicolor cultivar IS 18363 were studied in no-choice bioassays. The major components in the extract were identified as 4-hydroxybenzaldehyde and 4-hydroxybenzoic acid, with 4-hydroxy-3-methoxycinnamic acid, 3,4-dihydroxycinnamic acid, and 4-hydroxycinnamic acid present in minor amounts. All but 4-hydroxycinnamic acid were stimulatory at the doses tested. 4-Hydroxybenzaldehyde was more stimulatory than other potential biogenetic analogs. Hydroxybenzoic acids generally elicited greater feeding response than cinnamic acids, and the pattern of oxygen substitution in the benzene ring was …
Collecting Slime Flux Feeding Coleoptera In Japan, Brett C. Ratcliffe
Collecting Slime Flux Feeding Coleoptera In Japan, Brett C. Ratcliffe
University of Nebraska State Museum: Entomology Papers
Sappy wounds of injured or diseased trees entice a wide variety of insects. Carter (1945) stated that when fluxing is prolific or long continued, air-borne bacteria, yeasts, and fungi contaminate the oozing sap, ferment it and produce the material called slime flux. Apparently the oozing flux is toxic to the flux site and so prevents callusing by the tree. Consequently, the same tree usually can be a good collecting site for insects from year to year. My stay in Japan spanned four years, and collecting at flux sites was one of the most fruitful areas of endeavor. As soon as …