Entomology Commons^™

Comparison Of Chemigated And Aerially-Applied Chlorpyrifos And Fenvalerate For Control Of European Corn Borer (Lepidoptera: Pyralidae) Larvae, Thomas J. Weissling, Frank B. Peairs, Stan D. Pilcher

Department of Entomology: Faculty Publications

Aerial and overhead center-pivot irrigation system (chemigated) applications of chlorpyrifos 4 emulsifiable concentrate (EC) and fenvalerate 2.4EC significantly reduced numbers of first- and second-generation European corn borer, Ostrinia nubilalis Hubner, larvae in field corn, Zea mays L. The number of first-generation O. nubilalis larvae, pupae, or cavities per plant in plots chemigated with chlorpyrifos in 1984 was significantly less than in plots where chlorpyrifos was applied aerially. A similar trend was observed for fenvalerate in 1985. No significant differences among application methods were observed for second-generation O. nubilalis treatments. Chlorpyrifos and fenvalerate were effective O. nubilalis control agents but efficacy …

Insect, Mite, And Nematode Pests Of Oat, Jaime E. Araya, John E. Foster

Department of Entomology: Faculty Publications

Various arthropods and nematodes cause damage to oat (Avena sativa L. and A. byzantina K. Koch.) plants throughout their life. No stage is free from damage. Crops can be affected from the seedling stage until the grain is harvested. Pests of oat are either polyphagous (damaging a wide range of plants) or oligophagous (feeding on only a few plant species). Few, if any pests, are truly specific to oat crops.

The presence of various pest species in oat fields does not necessarily imply that yield reduction will result. Hundreds of arthropod species feed on oat cultivated in the USA …

Influence Of Temperature On In Vitro Growth Of Entomopathogenic Hyphomycetes, J. Fargues, Nk Maniania, Jc Delmas, N. Smits

All Peer-Reviewed Publications

Thirty-one isolates of 6 entomopathogenic hyphomycetes, Beauveria bassiana (Balsamo) Vuillemin, B brongniartii (= tenella; (Saccardo) Petch, Metarhizium anisopliae (Metschnikoff) Sorokin, M flavoviride Gams et Rozsypal, Nomuraea rileyi (Farlow) Samsom and Paecilomyces fumosoroseus (Wize) Brown et Smith, were grown in vitro to determine growth rates and ranges of growth at 10 temperatures from 8 to 37 °C in the dark. Radial growth of surface colonies on semisynthetic nutrient agar was recorded by daily measurement of 2 cardinal diameters. Because radial measurements (from day 3 to 12) of surface colonies for each temperature fit a linear model (y = vt+b), growth rates …

Some Aspects Of Mating Behavior Of Glossina Morsitans Morsitans Males Infected With A Dna Virus, Walter G.Z.O. Jura, John O.A. Davies-Cole

All Peer-Reviewed Publications

Mating behavior of Glossina morsitans morsitans Westwood males, inoculated with the DNA virus during the third-instar larval stage, and sexual receptivity of females premated with such males were studied in the laboratory. Like normal males, the virus-infected males readily located females and mounted them instantaneously. The mean duration of copulation was similar in both normal and infected groups, and all males in both groups experienced the final jerking phase before separating. The value for the degree of insemination (mean spermathecal value) for the females mated with normal males was significantly greater than that for the flies mated with the virus-infected …

Larval Development Of Chilo Partellus (Swinhoe) (Lepidoptera: Pyralidae) On Artificial Diet Incorporating Leaf Tissues Of Sorghum Lines In Relation To Their Resistance Or Susceptibility, Kailash Narain Saxena

All Peer-Reviewed Publications

This study was taken up to examine the relationship between the susceptibility or resistance of six sorghum lines to Chilo partellus and dietary quality of their leaf tissues, incorporated in an artificial diet, to support larval development. The diets tested were agar based basic medium with or without cellulose powder, dry leaf powder or fresh leaf-paste of the sorghum lines. The basic medium alone or with cellulose powder showed the poorest dietary quality in-as-much as it did not support more than 26–32% larval development. The tolerant sorghum IS 18520 leaf tissues, incorporated in the artificial diet as dry powder or …

Eclosion Behavior In Tsetse (Diptera: Glossinidae): Extrication From The Puparium And Expansion Of The Adult, Jan Zdárek, David L. Denlinger

All Peer-Reviewed Publications

The tsetse adult extricates itself from the puparium and surrounding substrate by a series of muscular contractions that generate a Stereotypic pattern of changes in hemolymph pressure. The digging action of the fly can be distinguished from a second pattern of hemocoelic pulsations that is used to remove obstacles from its path. When the fly is restrained extrication behavior will persist for over 10 h. If the adult's legs are freed while the remainder of the body remains encased in the puparium, the fly fails to engage in extrication behavior, a result which suggests that freedom of the legs switches …

Trypanosome Infection Rates In Tsetse Flies (Diptera: Glossinidae) And Cattle During Tsetse Control Operations In The Kagera River Region Of Rwanda, Steve Mihok, Leonard H. Otieno, Christopher S. Tarimo

All Peer-Reviewed Publications

Trypanosome infections were monitored in three species of tsetse fly (Glossina pallidipes Austen, G. morsitans centralis Machado, and G. brevipalpis News-tead) at four locations in the Kagera River region of Rwanda from May 1989 to September 1990. Two of the four areas (Mpanga Ranch and Bukora Ranch) were subjected to tsetse fly suppression operations with odour-baited traps. Proboscis infections of the Trypanosoma congolense and T. vivax types accounted for roughly equal numbers of the 207 mature infections detected (3.8%). Variation in infection rates was area-specific rather than tsetse species-specific. Order of magnitude differences in tsetse fly densities among areas were …

Influence Of D(+)-Glucosamine On Infection Rates And Parasite Loads In Tsetse Flies (Glossina Spp.) Infected With Trypanosoma Brucei, Steve Mihok, Leonard H. Otieno, Nafisa Darji, David Munyinyi

All Peer-Reviewed Publications

Teneral Glossina morsitans centralis, G. m. morsitans and G. pallidipes were infected with three different clones of Trypanosoma brucei in blood containing d(+)-glucosamine, an inhibitor of tsetse midgut lectin. On average, 5 days of d(+)-glucosamine treatment tripled infection rates, without affecting the proportion of infections that matured. Total infection rates were equal in males and females, but twice as many infections matured in males. Counts of parasites in the guts and salivary glands of 277 flies revealed order of magnitude differences among flies, with females consistently having 2-3-times as many parasites as males. Parasite numbers varied in a sex-specific manner …

Nebline, December 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

Stings Of Ants Of The Tribe Ectatommini (Formicidae: Ponerinae), Charles Kugler

Insecta Mundi

The sting apparatus anatomy is described and compared for 24 species in six of the 9 extant genera of Ectatommini: Paraponera, Acanthoponera, Gnamptogenys, Ectatomma, Proceratium, and Discothyrea. Phylogenetic analysis sorts 15 species of Gnamptogenys into four species groups. Phylogenetic analyses on the six ectatommine genera suggest that: 1) Gnamptogenys and Ectatomma are sister genera, 2) Proceratium and Discothyrea are sister genera, 3) Acanthoponera may be more related to Gnamptogenys and Ectatomma than to the others, and 4) Paraponera may not belong with the other five genera.

Hexapod Herald - Vol. 2, No. 14, November 27, 1991

Hexapod Herald and Other Entomology Department Newsletters

Grants

Publications

Congratulations

Departmental travelers

Miscellaneous

Graduate students

Calendar of events

Nebline, November 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

Hexapod Herald - Vol. 2, No. 13, October 23, 1991

Hexapod Herald and Other Entomology Department Newsletters

Grants

Publications

Congratulations

Departmental travelers

Calendar of events

Miscellaneous

Graduate students

News from the main office

Nebline, October 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.

Hexapod Herald - Vol. 2, No. 12, September 17, 1991

Hexapod Herald and Other Entomology Department Newsletters

Grants

Publications

Teaching

Congratulations

Departmental visitors

Departmental travelers

Calendar of events

Hexapod Herald - Vol. 2, No. 11, September 6, 1991

Hexapod Herald and Other Entomology Department Newsletters

Publications

Miscellaneous

Departmental travelers

Departmental visitors

Seminars

Calendar of events

Phenology Of The Western Cherry Fruit Fly (Diptera: Tephritidae) In Utah And Washington, Vincent P. Jones, Diane G. Alston, Jay F. Brunner, Donald W. Davis, Mark D. Shelton

Office of the Dean (CAFES) Scholarship

The flight period of the western cherry fruit fly, Rhagoletis indifferens Curran, was investigated in Utah tart cherry, Prunus cerasus L., orchards from 1983 to 1989 and in Washington sweet cherry, Prunus avium L., orchards between 1982 and 1988. In Utah, flies were first detected on 31 May 1989, but the average time of first detection was 9 June across nine site-years. In Washington, the first fly was detected on 23 May 1988, with an average first detection time of 1 June in the three site-years. On a degree-day (DD) scale (lower threshold of 5°C and no upper threshold), detection …

Nebline, September 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

Acreage Resource Guide

Una Nueva Especie De Ferrisia Fullaway En La República Argentina. (Homoptera: Pseudococcidae), Maria Cristina Granara De Willink

Insecta Mundi

Ferrisia multiformis sp.n. is described from Argentina, on Parthenium sp. A key is given to separate it from virgata and meridionalis also present in Argentina.

Notes On Ant Larvae 1989-1991, George C. Wheeler, Jeanette Wheeler

Insecta Mundi

In 1976 we published "Ant Larvae: Review and Synthesis," which we regarded as a summary of our life-time of research. During the following years so many new larvae were added to our collection and so much was published about ant larvae that we decided another general treatment was desirable; so in 1986 we published a "Ten-Year Supplement" to include additions and revisions to our Memoir. In 1987 and 1988 additional material warranted a supplement to the "l0-year Supplement" in 1989a. This article is the third supplement to the Memoir.

In the supplement, two genera are characterized, one generic characterization is …

Type Species Of New World Hispinae Genera (Coleoptera: Chrysomelidae), C. L. Staines

Insecta Mundi

Type species designations are reviewed and discussed far six New World Hispinae genera. Valid designations are: Oediopalpa cyanipennis (Fab.), Homalispa (Homalispa) batesii Baly, H. (Xanthispa) cimicoides (Guerin), Demotispa pallida Baly, Cephaloleia nigricornis (Fab.), and Coraliomela brunnea (Thunberg).

Philonthus Furvus Nordmann, 1837 And Its Allies In Mexico And Central America (Coleoptera: Staphylinidae), A. Smetana

Insecta Mundi

The Mexican and Central American species associated with Philonthus firvus Nordmann, 1837 are reviewed. Nine species are treated, two of them, P. oenotrus and P. melampus, both from Mexico, are described as new. Philonthus flohri Sharp, 1876 is removed from synonymy with P. furvus. All species are described and illustrated, and a key is added to aid in their identification. All available records from Mexico and Central America, and biological data for the species are provided. Lectotypes are designated for: P. flohri Sharp, 1876; P. sallaei Sharp, 1885; P. fissilis Sharp, 1885; P. nigerrimus Erichson, 1840.

The Genus Vaejovis In Sonora, Mexico (Scorpiones, Vaejovidae), W. David Sissom

Insecta Mundi

The genus Vaejovis C. L. Koch in the Mexican state of Sonora is reviewed, based on the examination of numerous specimens from United States collections. Four species are reported to occur there: Vaejovis spinigerus (Wood), V. confusus Stahnke, V. sonorae Williams, and V. decipiens Hoffmann. Distributional information for all four species is updated, and a key is provided to facilitate identification. The subspecies V. spinigerus sonorensis Hoffmann is synonymized with V. spinigerus. The record for V. gravicaudus Williams on Isla Tiburon (Williams 1980) is demonstrated to be a misidentification resulting from atypical variation in the closely related V. spinigerus …

The Genus Serradigitus In Sonora, Mexico, With Descriptions Of Four New Species (Scorpiones, Vaejovidae), W. David Sissom, Scott A. Stockwell

Insecta Mundi

Taxonomic characters of the recently resurrected scorpion genus Serradigitus Stahnke are discussed, leading to changes in the diagnosis and composition of the genus. Four species, S. baueri (Gertsch), S. bechteli (Williams), S. littoralis (Williams), and S. pacificus (Williams) are transferred into Serradigitus from the genus Vaejovis. The diversity of Serradigitus and distribution of its species in the Mexican state of Sonora are investigated. Serradigitus hearnei (Williams) and S. subtilimanus (Soleglad) are reported for the first time there, and four new species are described (two of which also occur in the United States): S. allredi from southern Arizona and central …

A Revision Of The World Amphibulus Kriechbaumer (Hymenoptera: Ichneumonidae, Phygadeuontinae), John C. Luhman

Insecta Mundi

Amphibulus Kriechbaumer (Hymenoptera: Ichneumonidae, Phygadeuontinae = Gelinae, Gelini) is revised world-wide. It is separated from its sister group genus Endasys Foerster by means of a key and a diagnosis. Keys are given to 3 speciesgroups and 25 species, including European gracilis Kriechbaumer and fennicus Sawoniewicz. Mexican satageus (Cresson) is redescribed, and 22 species are newly described: africanus, awanticeps, aurarius, aureolus, bicolor, borealis, carinarum, dentatus, duodentatus, eurystomatus, flavipes, latioris, nigripes, orientalis, pentatylus, pilosus, pseudopustulae, pustulae, pyrrhoborealis, rugosus, salicis, and tetratylus. Thirty figures illustrate diagnostic characters.

Cse Grants Report

Insecta Mundi

The Center for Systematic Entomology periodically awards research grants to its members for systematic studies in support of the Florida State Collection of Arthropods (FSCA).

Color Identification Of Economically Important Spodoptera Larvae In Honduras (Lepidoptera: Noctuidae), S. Passoa

Insecta Mundi

Spodoptera frugiperda (J. E. Smith), S. exigua (Hiibner), S. latifascia (Walker), S. ornithogalli (Guenb), S. dolichos (Fabricius), S. sunia (Guenee), and S. eridania (Cramer) are commonly associated with crops in Honduras. A key to these species with color illustrations of rare and typical forms is presented. Potential problems in identifying Spodoptera species are discussed.

The Genus Culicoides In Uruguay (Diptera: Ceratopogonidae), Gustavo R. Spinelli, Maria E. Martinez

Insecta Mundi

A new phytotelmic species, Culicoides charua, is described and illustrated from adult males and females and their pupal exuviae. New records are provided for Uruguay of C. biestroi, C. chacoensis, and C. impusilloides. A key is presented for the identification of the twelve species of Culicoides that occur in Uruguay.

Bionomics Of Tetrastichus Sesamiae [Hymenoptera: Eulophidae], A Pupal Endo-Parasitoid Of Maruca Testulalis [Lepidoptera: Pyralidae], J. B. Okeyo-Owuor, G. W. Oloo, P. O. Agwaro

All Peer-Reviewed Publications

The biology and behaviour of Tetrastichus sesamiae Risbec, a pupal endoparasitoid of Maruca testulalis Geyer, were studied under laboratory conditions. Most adults emerged from the host pupae between 08.00 h and 09.00 h and mating and oviposition started almost immediately. Both ♂♂ and ♀♀ mated repeatedly, and each ♀ could lay eggs for up to 6 days and in up to 5 host pupae. Progeny production ranged from 0-263 offspring per ♀ and adult longevity was from 4.3-13.9 days. The quality of food available to the adults was a major factor influencing progeny production, and longevity. The species was capable …