Index Catalog // ScholarsArchive@OSU

The distribution and biology of some Anthocoridae (Hemiptera: Heteroptera) in the Pacific Northwest

Creator:: Anderson, Norman Herbert
Resource Type:: Masters Thesis
Full Text:: library material. To Mr. S. R. Cannings, Experimental Farm, Suinmerland, B. C., for taking the

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Creator:: Bajwa, Waheed Ibrahim
Abstract:: The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures of Bacillus thuringiensis-based microbial and selected chemical insecticides was studied under laboratory and field conditions. Joint actions (synergism, additivity and antagonism) of these mixtures were determined for both egg and larval stages. Higher rates of microbial control agents (MCAs),...
Resource Type:: Dissertation
Full Text:: , Dr. Helmet Riedl, Dr. Porter B. Lombard and Dr. Paul A. Roberts, fortheir suggestions and helpful

Conservation of arthropod natural enemies in broccoli with relay strip-cropping

Creator:: McGrath, Daniel M. (Daniel Morton)
Abstract:: Relay strip-cropping combines two vegetation management tactics, under-sowing and strip-management. In this study conducted from 1994 though 1997, a cover crop seed-mixture containing oats (Avena sativa L. var. "Monida"), common vetch (Vicia sativa L.), red clover (Trifolium pratense L.), annual ryegrass (Lolium multflorum Lam.), and buckwheat (Fagopyrum esculentum Moench) was...
Resource Type:: Dissertation
Full Text:: . Kenneth B. Johnson, and Dr. Jeffrey C. Miller for their suggestions and comments. My wife Darryla, who

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Creator:: Halaj, Juraj
Abstract:: This work examined the importance of structural complexity of habitat, availability of prey, and competition with ants as factors influencing the abundance and community composition of arboreal spiders in western Oregon. In 1993, I compared the spider communities of several host-tree species which have different branch structure. I also assessed...
Resource Type:: Dissertation
Full Text:: Appendices 115 Appendix A Arthropod Biomass Models 116 Appendix B Arboreal Arthropod Community

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:: Calkin, James D.
Abstract:: The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...
Resource Type:: Masters Thesis
Full Text:: eggs (B). Figure 2. Annual development of Douglas-fir 5 Christmas trees and spruce spider mite

Effects of synthetic 9-oxodectrans-2-enoic acid on the foraging activities of honey bees (Apis mellifera L.)

Creator:: Youngs, Lorna C.
Abstract:: An experimental formulation of 9 -oxodec-trans-2-enoic acid, the major component of honey bee (Apis mellifera L.) queen pheromone, was tested for its effect on worker foraging behavior in the pollination of sweet cherries (Prunus avium L. ). The test formulation consisted of a solid beeswax cylinder impregnated with a measured...
Resource Type:: Masters Thesis
Full Text:: of Entomology in charge of major Date thesis is presented June 10, 1977 Typed by Mary Jo Stratton

Acoustic and olfactory behavior of Ips pini (Say) (Coleoptera:Scolytidae) during host invasion and colonization

Creator:: Swaby, James Archie
Resource Type:: Masters Thesis
Full Text:: School Date thesis is presented July 28, 1975 Typed by Mary Jo Stratton for James Archie Swaby To my

Attractivity of plant volatiles and a semichemical-based bait to the western spotted cucumber beetle, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

Creator:: Hongtrakul, Tawatchai
Abstract:: The adult western spotted cucumber beetle (WSCB), Diabrotica undecimpunctata undecimpunctata Mannerheim is considered a major pest of snap beans grown for processing in Western Oregon. Control consists of 1 or 2 insecticide sprays prior to harvest. A commercial semiochemical-based insecticide bait, Adios TIC®, 1.3% carbaryl + 5% buffalo gourd root...
Resource Type:: Masters Thesis
Full Text:: alcohol (B), and beta-ionone (b) as promising attractants for WSCB. An equal part mixture of these

Influence of the secondary metabolites of Mentha piperita L. on Tetranychus urticae Koch

Creator:: Larson, Katherine Cole
Resource Type:: Masters Thesis
Full Text:: . 1973, Shih et al. 1976, Ponti 1977, Gould 1979, Herbert 1981). Twospotted spider mite development and

Insect parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon

Creator:: Poonyathawon, Panya
Abstract:: The purpose of this study was to determine the present status of introduced parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon. The omnivorous leaf tier is native to Europe. It was introduced into North America around 1929 and became a serious pest of economic crops such as...
Resource Type:: Masters Thesis
Full Text:: Dean of Graduate School Date thesis is nresented July 17, 1968 Typed by Mary Jo Stratton for Panya

Differential transmission of strawberry mottle virus by Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell)

Creator:: Eulensen, Gustav Egon
Abstract:: The transmission of strawberry mottle virus (SMV) to Fragaria vesca L. by Chaetosiphon thomasi and C. fragaefolii was studied to determine differences between the two species. Acquisition, inoculation, and retention phases of transmission were described. In all phases, C. fragaefolii was found to be the more efficient vector. Mean transmission...
Resource Type:: Masters Thesis
Full Text:: their assistance during this period. Finally, I would like to thank my parents, Mr. and Mrs. Herbert

Etiology and pathogenesis of chalkbrood in the alfalfa leafcutting bee, Megachile rotundata

Creator:: Vandenberg, J. D. (John Donald)
Abstract:: Chalkbrood is a mycosis of larvae of the alfalfa leafcutting bee, Megachile rotundata (Fabricius). It is a serious threat to alfalfa seed growers in western North America who use populations of this bee for pollination. Basic studies were conducted to determine the etiology of this disease and the course of...
Resource Type:: Dissertation
Full Text:: particular Dr. B. F. Eldridge, Becky Fichter and Kurt Yandell were most helpful. The technical assistance

A quantitative survey of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller

Creator:: Robbins, Richard George
Abstract:: A study of the population dynamics and ecology of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller, was conducted on three sites surrounding the city of Corvallis, Oregon. Over a period of 12 months, 22,641 adult and larval fleas representing three families and eight species were recovered from...
Resource Type:: Masters Thesis
Full Text:: presented May 22, 1975 Typed by Mary Jo Stratton for Richard George Robbins ACKNOWLEDGEMENTS This study

Sound production in three sympatric Ips (Coleoptera:Scolytidae) species co-inhabiting Sitka spruce (Picea sitchensis)

Creator:: Oester, Paul T.
Abstract:: Three sympatric species of Ips, colonizing Sitka spruce, were investigated with regard to their infestation habits, stridulating apparatus and acoustic signals. The above phenomena are evaluated qualitatively and/or quantitatively and the acoustic signal differences are proposed as a possible factor for maintaining species isolation, although function is not shown. Field...
Resource Type:: Masters Thesis
Full Text:: Mary Jo Stratton for Paul Thomas Oester ACKNOWLEDGMENT To the following individuals I would like to

The seasonal occurrence and distribution of stoneflies (Plecoptera) of a western Oregon stream

Creator:: Kerst, Cary Dean
Abstract:: Plecoptera were collected from four sampling stations selected to represent a range of conditions on Oak Creek, a small woodland stream originating in the foothills of the Oregon Coast Range. The elevation of Site I was 700 ft. while the lowest site was located at 225 ft. Monthly benthos samples...
Resource Type:: Masters Thesis
Full Text:: presented ,170,,, /1/7/)Lfi Typed by Mary Jo Stratton for Cary Dean Kerst ACKNOWLEDGEMENTS My sincere

The response of scutigerella immaculata to naturally occurring chemical stimuli

Creator:: Reeve, Daniel Hart
Abstract:: A study was conducted of the response of the garden symphylan, Scutigerella immaculata (Newport), to naturally occurring chemicals. Results of olfactometer studies with plant odors were inconclusive because air currents in one olfactometer and the shape of another had undesirable effects on symphylan behavior. Non-random distributions of symphylans in chambers...
Resource Type:: Masters Thesis
Full Text:: Date thesis is presented Typed by Mary Jo Stratton for Daniel Hart Reeve ACKNOWLEDGMENTS I wish to

Mechanisms of hop resistance to the twospotted spider mite (Tetranychus urticae Koch)

Creator:: Peters, Kay Myra
Abstract:: Hop varieties were compared under field and greenhouse conditions to determine their relative susceptibility to the twospotted spider mite, Tetranychus urticac Koch. A fertility schedule was prepared for mites on resistant and susceptible varieties, and tests were conducted to compare sex ratio, oviposition rate, survival rate, and developmental rate of...
Resource Type:: Masters Thesis
Full Text:: thesis is presented ology &(7? 6 /?7 Typed by Mary Jo Stratton for Kay Myra Peters ACKNOWLEDGEMENTS

Controlled release fumigation of the greater wax moth, Galleria mellonella (L.), a pest of stored honeycomb

Creator:: Tremblay, Alan
Resource Type:: Masters Thesis
Full Text:: by Mary Jo Stratton for Alan Tremblay ACKNOWLEDGEMENTS I am grateful to my major professor and

Seasonal distribution, sex attractants, and applied biology of the strawberry crown moth, Synanthedon bibionipennis (Boisduval), in Oregon (Lepidoptera:Sesiidae)

Creator:: Wilmot, Thomas Ray
Resource Type:: Masters Thesis
Full Text:: Gra6uate SchAl Date thesis is presented April 14, 1978 Typed by Mary Jo Stratton for Thomas Ray Wilmot

A model study of a plant-herbivore system

Creator:: Stimac, Jerry Lynn
Abstract:: The dynamics of tansy ragwort, Senecio jacobaea L. , and the cinnabar moth, Tyria jacobaeae (L.) were studied with the aid of a system simulation model. The model development and validation were based on knowledge of the plant and herbivore gathered from the literature, four years of data from previous...
Resource Type:: Dissertation
Full Text:: Jo Stratton for Jerry Lynn Stimac Redacted for privacy Redacted for privacy Redacted for privacy

The influence of certain respiratory inhibitors and other chemicals on the integrated metabolism of the gray garden slug, Deroceras reticulatus (Muller)

Creator:: White, Grant Melvin
Resource Type:: Masters Thesis
Full Text:: action, sodium aiäe inhibits the oxidation of th cytochrozaes b the cytochrouie oxidase system in a

The effects of four anticholinesterase compounds on the embryology of Acheta domesticus (L.) (Orthoptera: Gryllidae)

Creator:: Hartman, Margaret Jane, 1943-
Abstract:: Two organophosphates (Ruelene and Tiguvon) and two carbamates (Sevin and Baygon) were administered topically at various sublethal concentrations to cricket eggs. All the pesticides caused an immediate decrease in the acetylcholinesterase (AChE) activity level in the embryo, but the level usually returned to normal within three days after dosage. The...
Resource Type:: Dissertation
Full Text:: X170 Typed by Mary Jo Stratton for Margaret Jane Hartman ACKNOWLEDGEMENTS I wish to express my

The morphology and taxonomic significance of the male genitalia of Coenonycha (Coleoptera, Scarabaeidae)

Creator:: Davidson, Jean Hoyt Puckle
Abstract:: The genus Coenonycha contains 30 described species of small to medium sized scarabs. They are found in the arid and semi-arid regions of western United States and northern Baja California. The adults feed at night on several genera of xerophylous plants. An examination of the male genitalia of the 19...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Dean of Graduate School Date thesis is presented Typed by Mary Jo Stratton for Jean

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

Creator:: Isaacson, Dennis
Abstract:: The dynamics of a field population of the cinnabar moth, Tyria jacobaeae L., were studied near Jordan, Linn County, Oregon. In both 1970 and 1971 larval populations were so large that all foliage of the host weed, tansy ragwort, Senecio jacobaea L., was consumed. The ensuing starvation accounted for the...
Resource Type:: Masters Thesis
Full Text:: , Typed by Mary Jo Stratton for Dennis Lee Isaacson ACKNOWLEDGMENTS The following persons deserve

Spatial patterns of predaceous and phytophagous apple mites (Acari : Eriophyidae, phytoseiidae, Stigmaeidae, Tetranychidae) : intra- and interspecific relationships

Creator:: Slone, Daniel H.
Abstract:: Aggregation and species association of 9 species of phytophagous and predaceous mites were studied for 6 yr in an orchard with 100, 2 m tall 'Red Delicious' apple trees. To quantify aggregation, a method was developed that is powerful, and easily interpreted. It relates the proportion of habitat occupied to...
Resource Type:: Dissertation
Full Text:: bearable. S&B anyone? Finally, a big hug and thanks to my fiancée Jenny. She had to endure all of my

Biology and population regulation of the strawberry root weevil, Otiorhynchus ovatus (L.) (Coleoptera:Curculionidae)

Creator:: Emenegger, Donald Brian
Abstract:: The life history of the strawberry root weevil, Otiorhynchus ovatus (L.), on peppermint was studied in the Willamette Valley of Oregon to provide the information necessary to develop effective control measures. Adult weevils emerged from the soil from late May until mid- June and were active in the field until...
Resource Type:: Masters Thesis
Full Text:: , 1976 Typed by Mary Jo Stratton for Donald Brian Emenegger ACKNOWLEDGMENTS The following persons

Biology and behavior of the mite Cheletomorpha lepidopterorum (Shaw) (Prostigmata:Cheyletidae) and its role as a predator of a grain mite Acarus farris (Oud.) (Astigmata:Acaridae)

Creator:: Allison, James Roger, 1937-
Abstract:: Cheletomorpha lepidopterorum (Shaw), a predaceous, prostigmatid mite, was studied under laboratory conditions of 20° - 30° C and 80% - 90% R. H. to determine its effectiveness as a possible biological control agent of Acarus farris (Oud. ), a graminivorous mite which infests stored grains and grain products. Although Cheletophyes...
Resource Type:: Dissertation
Full Text:: Stratton for James Roger Allison DEDICATION This thesis is dedicated to my four children, Dennis

The taxonomic significance of the male genitalia and associated structures in the genus Eucerceris cresson (Hymenoptera : Sphecidae)

Creator:: Davidson, Jerry Mitchell
Abstract:: The male genitalia of 69 species, representing eight genera of sphecid wasps, were examined in order to ascertain their taxonomic value. In all, the male genitalia of approximately 1000 specimens were critically studied. Emphasis was placed on the genitalia and associated sclerites of the known males in the genus Eucerceris....
Resource Type:: Masters Thesis
Full Text:: Privacy Dean of Graduate School Date thesis is presented April 27, 1970 Typed by Mary Jo Stratton for

The role of acoustical signals in the communicative behavior of the water scavenger beetles, Tropisternus (Coleoptera:hydrophilidae)

Creator:: Ryker, Lee Chester
Abstract:: The communicative behavior of five species and subspecies of Tropisternus Solier (Coleoptera: Hydrophilidae) was studied. These aquatic beetles have stress and calling chirps (both sexes), a second male calling signal (one species), a single male courtship sound (usually), a male copulatory sound, and a female aggressive rejection buzz (three species)....
Resource Type:: Dissertation
Full Text:: presented June 6, 1975 Typed by Mary Jo Stratton for Lee Chester Ryker ACKNOWLEDGEMENTS I am grateful

Phospholipids and their components in the nutrition and metabolism of the blowfly, Phormia regina (Meig.)

Creator:: Hodgson, Ernest
Resource Type:: Dissertation
Full Text:: ) lec1thin was not required bt : ' 1 I ~I. t' .' ' Drqgg»b!la but cQUl.d be used as a replacement in the

The American species of the genus Ellopia (Lepidoptera) with special reference to Ellopia somniaria Hulst

Creator:: Johnson, Philip Cornwell
Resource Type:: Masters Thesis
Full Text:: of Ellopia are Rev. George D. ifuist, i. R. Grote, H. G. Dyar, J. B. smith, di11iam Barnes, and. J

Taxonomy and distribution of the leaf-hopper genus Aphrodes Curtis (Homoptera:Cicadellidae) in North America

Creator:: Klein, Terry Allen
Abstract:: The subfamily Aphrodinae is represented in the Nearctic Region by eight species contained in a single tribe, Aphrodini, and genus Aphrodes. The external and internal morphology, biology and ecology of the Nearctic members of the genus Aphrodes were investigated. Distributional evidence indicates that six of the eight species, belonging to...
Resource Type:: Masters Thesis
Full Text:: Stratton for Terry Allen Klein ACKNOWLEDGEMENTS I am very grateful to my major professor, Dr. Paul Oman

The species composition and adaptations of insects in an intermittent stream in western Oregon

Creator:: Tew, Michael Peter
Abstract:: The insect fauna of a small second order intermittent stream near Corvallis, Benton County, Oregon was studied. The species composition was determined, attempts were made to monitor migration to the stream, qualitative and quantitative benthos samples were taken, emergence was sampled, the dry stream bed was examined for forms of...
Resource Type:: Masters Thesis
Full Text:: of Graduate School Date thesis is presented October 19. 1970 Typed by Mary Jo Stratton for Michael

A study of ticks (Acarina: Ixodidae) and chiggers (Trombiculidae) from two areas in western Oregon

Creator:: Easton, Emmett Richard
Abstract:: A study of the host range and distribution of ticks and chiggers (Acari) was undertaken in two contrasting forested areas of western Oregon. Acarines were sampled from host mammals which were trapped along line transects laid out in both areas, each consisting of 18 stations 50 feet apart. Hosts were...
Resource Type:: Dissertation
Full Text:: Date thesis is presented 1gegii4q- 197..2 Typed by Mary Jo Stratton for Emmett Richard Easton

Enhancing pest mite biological control by Typhlodromus pyri (Acari: Phytoseiidae) in Pacific Northwest vineyards

Creator:: Gadino, Angela Noelle
Abstract:: The predatory mite Typhlodromus pyri (Acari: Phytoseiidae) is the predominant species in cool climate Pacific Northwest vineyards and a principal predator of pest mites including the grapevine rust mite Calepitrimerus vitis (Acari: Eriophyidae). In recent years vineyards have been experiencing C. vitis population outbreaks leading to increased economic damage from...
Resource Type:: Dissertation
Full Text:: thresholds for control group…………………………………………... 127 Appendix B Chapter IV - Preliminary tests for y

Effects of early season immigration on acaricide resistance of Tetranychus urticae Koch on strawberry in the California Pajaro and Salinas valleys

Creator:: Miller, Richard W. (Richard William), 1958-
Abstract:: In the Pajaro Valley near Watsonville, California, twospotted spider mite (Tetranychus urticae Koch) populations were surveyed in 1983 and '84 to detect the influence of immigrants from nursery plants or surrounding vegetation on subsequent resistance development to cyhexatin and formetanate in strawberry fields. Susceptible mites (cyhexatin LC50 = 0.0039 %...
Resource Type:: Masters Thesis
Full Text:: resistance in arthropods (Comins, 1977b, Georghiou and Taylor, 1977a,b, Tabashnik and Croft, 1983). Growers

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:: Jorgensen, Clive Darrel
Abstract:: The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...
Resource Type:: Dissertation
Full Text:: as B. praetiosa, from Crataegus, in Europe or North America. Kremer (58, p. 195) listed Oratae

Some factors in the development of northwestern entomology

Creator:: Bonnell, Daniel Ernest
Resource Type:: Dissertation
Full Text:: their very numbers, must go unmentioned by name. Corvallis, Oregon May, 1942 L D. E. B

The ecology and production dynamics of four black fly species (Diptera:simuliidae) in western Oregon streams

Creator:: Speir, Jon A.
Abstract:: Ecological and production studies of Prosimulium caudatum Shewell, P. dicum Dyar and Shannon, Simulium arcticum Malloch and S. canadense Hearle (Diptera: Simuliidae) were made in 1971 and 1972 in three streams near Corvallis, Oregon. The purpose of the study was to characterize the biology and population dynamics of larvae, and...
Resource Type:: Dissertation
Full Text:: August 14, 1975 Typed by Mary Jo Stratton for Jon A. Speir ACKNOWLEDGEMENTS I would like to express

The commercial propogation and biological studies of two parasites of the codling moth

Creator:: Gillespie, Douglas Grayson
Resource Type:: Masters Thesis
Full Text:: the Department of entomology at the college; B. G. Thompson, assistant entomologist; Joseph Wilcox

A revision of the genus Colladonus (Homoptera, Cicadellidae)

Creator:: Nielson, Mervin William
Resource Type:: Dissertation
Full Text:: his kindness to me durin& rq visit to the Museum. To Mr. Lawrence s. Jones aDd Dr. B. A. Porter ot

Biological and morphological studies of the Scaphytopius acutus complex (Homoptera:Cicadellidae)

Creator:: Musgrave, Carol A.
Abstract:: Reinterpretation of the leafhopper tribe Scaphytopiini reveals it to be primarily a New World taxon with only limited representation in the Palearctic, Oriental and possibly Ethiopian regions. Approximately 75 species assigned to three genera are known from the United States and Canada with at least another 75 species representing an...
Resource Type:: Dissertation
Full Text:: Dean of Graduate School Date thesis is presented May 6, 1974 Typed by Mary Jo Stratton for Carol Ann

Bioenergetics and strategies of some trichoptera in processing and utilizing allochthonous materials

Creator:: Grafius, Edward John
Abstract:: The purpose of the study was to provide quantitative information on the utilization and processing of leaves and needles by several species of caddisfly larvae. Field and laboratory studies were conducted on three species of Lepidostoma Rambur (Lepidostomatidae), from Willamette Valley and Cascade Mountain streams, and on Clistoronia magnifica (Banks)...
Resource Type:: Dissertation
Full Text:: of braduate Scflool Date thesis is presented March 15, 1977 Typed by Mary Jo Stratton for Edward J

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Creator:: Pratt, Paul D.
Abstract:: We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or...
Resource Type:: Dissertation
Full Text:: , California Academy of Sciences, and Acarologia. The original publications are: Pratt, P. D. and B. A

A taxonomic revision of the Nearctic species of Apateticus Dallas and Podisus Herrich-Schaeffer (Heteroptera:Pentatomidae:Asopinae)

Creator:: Phillips, Kathryn Ann
Resource Type:: Dissertation
Full Text:: University, Ames, (ISU), Dr. R. E. Lewis; Louisiana State University, Baton Rouge, (LSU), Dr. J. B. Chapin

The leafhopper genus Tiaja Oman (Homoptera:Cicadellidae), with a contribution to the biosystematics of the group

Creator:: Sawbridge, Jane Rosamund
Abstract:: The genus Tiaja Oman consists of eight known species of flightless leafhoppers of the subfamily Megophthalminae found along the western coast of North America between British Columbia and northern Mexico. Species occurring from the San Francisco Bay area northward are restricted to a narrow coastal zone within 1 km of...
Resource Type:: Dissertation
Full Text:: thesis is presented August 12, 1976 Typed by Mary Jo Stratton for Jane Rosamund Sawbridge

Ecology of the wheat stem sawfly, Cephus cinctus Norton

Creator:: Holmes, Neil Devlin
Resource Type:: Dissertation
Full Text:: unknown . ~tigia Soh1pdte - larvae bore in raspberries, b ackberries, roses. Janus Stephens - larvae

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis

The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

Creator:: Theiling, Karen M.
Abstract:: Documentation of the side effects of pesticides on arthropod natural enemies has expanded rapidly since the 1950's as part of an increase in non-target side effects literature. Most reviews have been based on empirical analysis of selected literature. The SELCTV database was developed to make a larger information base accessible...
Resource Type:: Masters Thesis
Full Text:: further information on this program, contact B. A. Croft). Record Structure SELCTV and REFER record

Systematics and host associations of Ormyrus species (Hymenoptera: Chalcidoidea)

Creator:: Hanson, Paul E.
Abstract:: The genus Ormyrus has a worldwide distribution and comprises about sixty recognized species. The higher taxonomic relationships of the genus are uncertain, as evidenced by its placement in the families Ormyridae, Pteromalidae, or Torymidae. Here, the genus is described in detail and a preliminary catalog of the world species is...
Resource Type:: Dissertation
Full Text:: . INTRODUCTION 1 CHAPTER 2. MATERIAL, METHODS, AND TERMS 5 A. Material examined 5 B. Morphology: methods and

Observations on some western Oregon mites, with special reference to the Oribatoidea

Creator:: Swisher, Ely Martin
Resource Type:: Masters Thesis
Full Text:: shrinkae and distortion, and darkens with age. Soft bodied mites cannot b munted in balsam as they soon

The Anopheline mosquitoes of Oregon, with suggestions for their control

Creator:: Anderson, Ernest Clifford
Resource Type:: Dissertation
Full Text:: Illetory of a1arta in Orcon . . . . . . b a1aria Survey of Northern Lane and Southeastern Benton Counties

A study of the Megaloptera of the Pacific coastal region of the United States

Creator:: Evans, Elwin D.
Resource Type:: Dissertation
Full Text:: October 4, 1971 Typed by Mary Jo Stratton for Elwin D. Evans ACKNOWLEDGEMENTS I would like to thank

Certain biotic factors influencing the invasion and survival of the Douglas-fir beetle Dendroctonus pseudotsugae Hopkins (Coleoptera : scolytidae) in fallen trees

Creator:: Hendrickson, William Henry
Abstract:: Factors considered were phloem moisture, sour-phloem (which may be furthered by the presence of ample phloem moisture), oleoresin of the host, and the presence of unmated female beetles in suitable host material. Levels of phloem moisture present in variously prepared logs in the field ranged from about 100 to upwards...
Resource Type:: Dissertation
Full Text:: experirnent showing at- tractance of logs containing unrnated fernale b eetle s 29 Running record of the

A review of the genus Torymus for Oregon and California (hymenoptera: chalcidoidea: torymidae)

Creator:: Hobbs, Kenneth Rollin
Resource Type:: Dissertation
Full Text:: guidance as well as invaluable assistance. Without the technical aid of Mr. A. B. Gahan of the United

Nearctic sawflies I, the adults and larvae of the subfamily Blennocampinae (Hymenoptera: Tenthredinidae)

Creator:: Smith, David R.
Abstract:: Seventy-two species of Blennocampinae in 21 genera and six tribes are known from the Nearctic region. The adults and known larvae of all species and genera are keyed, described and illistrated. A definition of the subfamily, a review of previous work, a table of host-plant associations, and a discussion of...
Resource Type:: Dissertation
Full Text:: History Survey, Urbana; Dr. B. D. Burks, U. S. Department of Agriculture, U. S. National Museum

A revision of the genus Notiphila Fallén (Diptera:Ephydridae) from America north of Mexico

Creator:: Mathis, Wayne N.
Abstract:: The North American species of the shore fly genus Notiphila Fallen were taxonomically revised. Over 13,000 specimens were examined from throughout the Nearctic Region and information relating to the biology of many species occurring in the West was gathered from both field and laboratory studies. Previously used characters were reevaluated;...
Resource Type:: Dissertation
Full Text:: by Mary Jo Stratton for Wayne N. Mathis ACKNOWLEDGEMENTS Numerous persons have assisted during

A revision of the black grass bug genus Irbisia Reuter (Heteroptera:Miridae)

Creator:: Schwartz, Michael David
Abstract:: The black grass bug genus Irbisia Reuter was revised. Over 18,000 specimens were examined and information concerning the biology, host plant and distributional relationships of the species was compiled. In addition to external characters, the male claspers and vesica, and the female dorsal libiate plate of the bursa copulatrix and...
Resource Type:: Masters Thesis
Full Text:: . Farris, State University of New York, Stonybrook. Ms. Bonnie B. Hall, Scientific Illustrator, Oregon

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