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Creator:: Meister, Herman Skinner
Abstract:: The cabbage flea beetle, Phyllotreta cruciferae (Coleoptera: Chrysomelidae) was introduced into the United States from Europe during the 1920's and 1930's. It was described as a new species, P. columbiana, native to North America by F. H. Chittenden in 1927. This synonymic situation was discovered in 1953 after P. cruciferae...
Resource Type:: Masters Thesis
Full Text:: cruciferae (goeze), in western Oregon AN ABSTRACT OF THE THESIS OF Herman Skinner Meister for the (Name

Creator:: Yensen, Arthur Eric
Abstract:: This study was undertaken to find means of separating the morphologically similar species of North American Trixagus and to bring together information on Trixagus and Pactopus. A key to separate the world's eight genera of extant Throscidae is presented for the first time. A key to the five species of...
Resource Type:: Masters Thesis

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

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:: formation of some homonyms. With minor exceptions, this condition continued until Herman Loew (1860

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