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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:: LeConte, T. atrox LeConte, T. spinulosus dentibius Robinson, T. foveicollis Harold, T. frontera Vaurie

Jerking behavior among phytoseiid mite species (Acari: Phytoseiidae)

Creator:: Blackwood, J. Scott
Abstract:: Jerking, which we defined as a pronounced and often repeated lunging of the entire body, was studied in larvae among seven species of phytoseiid mites, and in the nymphal stages of Neoseiulus fallacis (Garman). This behavior was observed in all active immature stages of N. fallacis, and in larvae of...
Resource Type:: Masters Thesis
Full Text:: : Phytoseiidae) AN ABSTRACT OF THE THESIS OF J. Scott Blackwood for the degree of Master of Science in

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Creator:: Dreves, Amy J.
Abstract:: Four sampling techniques were evaluated to estimate clover aphid, Nearctaphis bakeri (Cowen), abundance in red clover fields in the Willamette Valley. The Berlese funnel method detected one to four times more aphids than other sampling techniques. Visual assessment often underestimated the high aphid densities during the flowering and seeding of...
Resource Type:: Masters Thesis
Full Text:: clover aphid, Nearctaphis bakeri (Cowen) in red clover AN ABSTRACT OF THE THESIS OF Amy J. Dreves for

Pollination and pollinators of pumpkin and squash (Cucurbita maxima Duchesne) grown for seed production in the Willamette Valley of western Oregon

Creator:: Gavilánez-Slone, Jenny M.
Abstract:: 'Golden Delicious' winter squash (GDWS), Cucurbita maxima Duchesne, provides significant amounts of pollen (24 mg) and nectar (236 μl), but with a low reward of 14% nectar sugar. The quantity of nectar produced per GDWS flower differed between sites and floral sex. The GDWS male flowers had 25% higher sugar...
Resource Type:: Masters Thesis
Full Text:: . Many thanks to Drs. W. Stephen, J. Stang and A. Bakalinsky for their valuable suggestions and as

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:: members, Drs. David A. Perry and Arthur J. Boucot, were always encouraging and ready to provide good

Taxonomic characters of the genus Ochodaeus Serville with descriptions of two new species in the O. Pectoralis LeConte species complex (Coleoptera:Scarabaeidae)

Creator:: Carlson, David Craig
Abstract:: The genus Ochodaeus Serville contains approximately sixty species and is World wide in its distribution. One-half of these species are known from the Nearctic and Neotropic regions. Adults of six previously described species common to the United States have been studied in detail. The mandibles, stridulatory peg, and male genitalia...
Resource Type:: Masters Thesis
Full Text:: species descriptions are based. Dr. J. D. Lattin, committee member, for many stimulating discussions

Taxonomic revision of Lichnanthe Burmeister with studies on the biology of L. rathvoni (Leconte) (Coleoptera:Scarabaeidae)

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:: laboratory and in the field. Dr. J. D. Lattin, Dr. G. W. Krantz, Dr. P. Oman, Dr. P. D. Dawson, Dr. E. J

A review of Sitobion, with a description and revision of a new genus (Homoptera: Aphididae)

Creator:: Jensen, Andrew S.
Resource Type:: Dissertation
Full Text:: Descriptions 3.4.1 Robinsonaphis adianti (Oestlund) 3.4.2 Robinsonaphis clydesmithi (Robinson) 3.4.3

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:: lesser peach- tree borer, Synanthedon pictipes (Grote & Robinson). Pheromone traps baited with 100

Some factors in the development of northwestern entomology

Creator:: Bonnell, Daniel Ernest
Resource Type:: Dissertation
Full Text:: Collection. . . , . 134 J. The W. J. Chamberlin Collection . . . . . 134 K. The British Columbia

ScholarsArchive@OSU

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

Jerking behavior among phytoseiid mite species (Acari: Phytoseiidae)

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Pollination and pollinators of pumpkin and squash (Cucurbita maxima Duchesne) grown for seed production in the Willamette Valley of western Oregon

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

Taxonomic characters of the genus Ochodaeus Serville with descriptions of two new species in the O. Pectoralis LeConte species complex (Coleoptera:Scarabaeidae)

Taxonomic revision of Lichnanthe Burmeister with studies on the biology of L. rathvoni (Leconte) (Coleoptera:Scarabaeidae)

A review of Sitobion, with a description and revision of a new genus (Homoptera: Aphididae)

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

Some factors in the development of northwestern entomology

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