Index Catalog // ScholarsArchive@OSU

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:: TREES by WILLIAM HENRY HENDRICKSON A THESIS subrnitted to OREGON STATE UNIVERSITY in partial

The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Creator:: Cowan, Bruce Dudley
Abstract:: Six species of Cleridae, including Enoclerus spegeus Fabricius, E. lecontei Wolcott, E. schaefferi (Barr), E. eximius Mannerheim, Thanasimus undatulus Say, and an undescribed species of Enoclerus, were found on Douglas-fir in western Oregon. E. sphegeus was the only clerid of the six species studied which was primarily associated with the...
Resource Type:: Masters Thesis
Full Text:: appreciation to the following people for their help in the preparation of this thesis: To Dr. William P

Biological interrelationships between the Ambrosia beetle Xyleborus dispar with its symbiotic fungus Ambrosiella hartigii

Creator:: French, John Richard Joseph
Abstract:: Biological interrelationships between the ambrosia beetle Xyleborus dispar (F.) (Coleoptera:Scolytidae) with its symbiotic fungus, Ambrosiella hartigii Batra (Fungi Imperfecti) were investigated in western Oregon. Postdiapause adults of X. dispar collected in March through June with rotary nets, and excised from overwintered and newly attacked host material, produced a single generation...
Resource Type:: Dissertation
Full Text:: FUNGUS AMBROSIELLA HARTIGII Abstract approved: Redacted for Privacy William P. Nagel Biological

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

Creator:: Hobbs, Kenneth Rollin
Resource Type:: Dissertation
Full Text:: University of Texas, Dr. Henry Dietrich of Cornell University, and Dr. W. L. Brown of the Museum of

A revision of the genus Colladonus (Homoptera, Cicadellidae)

Creator:: Nielson, Mervin William
Resource Type:: Dissertation
Full Text:: . T4td o. Thatcher ot Colorado A and U College, Dr. Henry Dietrich of Cornell Univerait.y, Dr. A. F

Larval systematics of the Troginae in North America, with notes on biologies and life histories (Coleoptera: Scarabaeidae)

Creator:: Baker, Charles William, 1937-
Abstract:: A study of the immature stages of the subfamily Troginae in North America was conducted from the spring of 1963 through the spring of 1965, Larvae of Trox and Omorgus were easily reared in the laboratory, but all attempts to rear the larvae of Glaresis were unsuccessful, The suberosus group,...
Resource Type:: Dissertation
Full Text:: CHARLES WILLIAM BAKER for the Ph. D. in Entomology (Name) Date thesis is presented (Degree) (Major

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:: entirely applicable statewide (i.e., Univ. Calif. growers). Thanks are extended to Howard Tao, Henry

A systematic study of the genus Phytocoris Fallén (Heteroptera:Miridae) in western North America

Creator:: Stonedahl, Gary Michael
Abstract:: The western Nearctic species of the genus Phytocoris Fallen were taxonomically revised. Over 15,000 specimens were examined. Information concerning host plant associations and distributions was compiled and summarized for use by future researchers. External morphological features and characters of the male genitalia were used to distinguish species. The genital tubercles...
Resource Type:: Dissertation
Full Text:: . Kenton L. Chambers, Robert E. Frenkel, James D. Hall, and William P. Stephen, for their comments on the

Revision of the genus Platylygus (Heteroptera: Miridae)

Creator:: Equihua-Martinez, Armando
Abstract:: The genus Platylygus Van Duzee was erected in 1915 and revised by Kelton and Knight in 1970 describing 26 new species from United State and Mexico. Despite this prior revision, taxonomic problems have been encountered with the use of the keys and in the identification given the close similarity among...
Resource Type:: Dissertation
Full Text:: of these insects as well as his comments on closely related genera. want to thank Dr. William P

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:: taken in flight in California. However, Henry Edwards (1881) described it as a new species, Albuna

ScholarsArchive@OSU

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

The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Biological interrelationships between the Ambrosia beetle Xyleborus dispar with its symbiotic fungus Ambrosiella hartigii

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

A revision of the genus Colladonus (Homoptera, Cicadellidae)

Larval systematics of the Troginae in North America, with notes on biologies and life histories (Coleoptera: Scarabaeidae)

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

A systematic study of the genus Phytocoris Fallén (Heteroptera:Miridae) in western North America

Revision of the genus Platylygus (Heteroptera: Miridae)

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

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