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Creator:: Russell, Malcolm Howard
Resource Type:: Masters Thesis
Full Text:: Forestry, Oregon State University. Dr. W. P. Nagel, formerly Associate Professor of Entomology, was my

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:: . Kenton L. Chambers, Dr. John H. Lyford, Jr. and Dr. Paul W. Oman. Dr. John D. Lattin, my major professor

Creator:: Howse, Gordon M.
Resource Type:: Dissertation
Full Text:: ANALYSIS OF DOUGLAS-FIR BEETLE (DENDROCTONUS PSEUDOTSUGAE HOPK.) POPULATIONS Redacted for Privacy W. P

Creator:: Hollingsworth, Craig Stephen
Abstract:: A pest management program for Tetranychus urticae Koch in Oregon peppermint was developed based on studies of sampling, plant phenology, population dynamics and damage thresholds. A sample size of 45 leaves provided a confidence level of 90% and a confidence interval of 50%. Estimation of the sample mean was based...
Resource Type:: Dissertation

Creator:: Russell, Loren Kenneth
Abstract:: Caurinus dectes Russell is a minute, brachypterous scorpionfly which was discovered at Marys Peak, Benton County, Oregon, in 1976, and subsequently described as the only representative of the subfamily Caurininae within the Boreidae (snow scorpionflies). Caurinus dectes is now known to range from the Olympic Peninsula and Northern Cascades in...
Resource Type:: Dissertation
Full Text:: this uncertain prospect. I am also appreciative of the other members of my thesis committee: G. W

Creator:: Ranga Rao, Gangavalli V.
Abstract:: Developmental thresholds and thermal unit (degree day) requirements for eggs, different larval instars, pupal stage and preoviposition period were determined for the obliquebanded leafroller (OBLR), Choristoneura rosaceana (Harris). Separate thresholds and degree day requirements were determined for males and females, but differences between the sexes were not significant. However, there...
Resource Type:: Dissertation
Full Text:: financial and moral, and to the members of my committee Dr. N. H. Anderson, Dr. Ralph E. Berry, Dr. M. M

Creator:: Carlson, David Craig
Abstract:: The genus Lichnanthe Burmeister contains eight extant and one fossil species which are strictly nearctic in distribution. The subfamily Glaphyrinae, however, is distributed nearly world-wide. Five species were previously described and three are described as new herein. All eight extant species are described in detail herein, synonomies are made current,...
Resource Type:: Dissertation
Full Text:: . Roubik; T. Schuh; R. H. Turnbow; W. J. Turner; T. Vargas; R. L. Westcott; N. 'C. Wood ley. I would also

Creator:: Undurraga O., Jaime M.
Abstract:: Larval mortality of leafcutting bee, Megachile pacifica (Panzer) (= rotundata (F.)), is high, usually exceeding 50%. Parasites and predators are not a limiting factor in the survival of the progeny. The disease chalk brood has been an important mortality factor since 1974. Inadequate food supply, pollen and nectar, may affect...
Resource Type:: Dissertation
Full Text:: : MEGACHILIDAE) Redactedfor Privacy Abstract approved: William P. Stephen Li` Larval mortality of leafcutting

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