Herbert Osborn
Ohio State University
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Journal of Economic Entomology | 1929
Herbert Osborn
The leafhoppers of this country have not been given due consideration owing to their small size and inconspicuous character. The restriction to introduced plants and the absence of seasonal cycles are suggestive of immigrants from tropical regions. The egg stage is favorable to the introduction of such species. Observations are given on the introduction and distribution of the following: Idiacerus scurre, I. cognatus, Allygus mixtus, Platymetapius hyalinus, Deltocephalus pulicarius, D. pascuellus, D.ocellaris, D. collinus, D.flavicosta, Euscelis obscurinervis, Draeculacephale reticulata, Cicadula 6-notata, Balclutha punctata, Empoasca fabae, Eupteryx melissae, Tryphlocyba ulmi, T. rosae, Perkinsiella saccharicida and Peregrinus maidis.
Journal of Economic Entomology | 1923
Herbert Osborn
Earlier entomologists presumably had not set standards for training. The problem of standards is worth careful discussion. A great part of our knowledge is gained through personal contact and we lose in proportion as it becomes impossible. The advanced courses permit closer contact; there is also contact later with station and extension workers. Teachers in vocational agriculture frequently have opportunities to discover latent talent. There should be helpful contacts between entomologists and their assistants, partaking of the educational. There is no more ideal training than under the tutelage of a man of large experience. One method of obtaining this is through summer assignments with the Bureau of Entomology or Station Entomologists.
Canadian Entomologist | 1897
Herbert Osborn
The interesting note by Prof. Baker on Ledra perdita (Centruchus perdita , A. & S.) deserves notice on account of the mystery which it clears up, and it may also be worth while to add some testimony in the way of corroborative evidence.
Canadian Entomologist | 1883
Herbert Osborn
Journal of Economic Entomology | 1911
Herbert Osborn
Canadian Entomologist | 1892
Herbert Osborn
Canadian Entomologist | 1891
Herbert Osborn
Journal of Economic Entomology | 1926
Herbert Osborn
Canadian Entomologist | 1900
Herbert Osborn
Canadian Entomologist | 1894
Herbert Osborn