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Articles 10411 - 10440 of 11462

Full-Text Articles in Entomology

Pollination (In Growing Alfalfa For Seed In Utah), F. E. Todd, George E. Bohart, William P. Nye Jan 1950

Pollination (In Growing Alfalfa For Seed In Utah), F. E. Todd, George E. Bohart, William P. Nye

All PIRU Publications

No abstract provided.


Rate Of Deterioration Of Beetle-Killed Engelmann Spruce, James L. Mielke Jan 1950

Rate Of Deterioration Of Beetle-Killed Engelmann Spruce, James L. Mielke

The Bark Beetles, Fuels, and Fire Bibliography

Examination of beetle-killed stands in Utah and Colorado indicate that dead Engelmann Spruce will remain standing and sound for at least 20 years.


The Alkali Bee, Nomia Melanderi Ckll., A Native Pollinator Of Alfalfa, George E. Bohart Jan 1950

The Alkali Bee, Nomia Melanderi Ckll., A Native Pollinator Of Alfalfa, George E. Bohart

All PIRU Publications

No abstract provided.


Leaflet No 1001 - Aerial Baiting For The Control Of The Little Plague Grasshopper (Austroicetes Cruciata Sauss), C. F. Jenkins Jan 1950

Leaflet No 1001 - Aerial Baiting For The Control Of The Little Plague Grasshopper (Austroicetes Cruciata Sauss), C. F. Jenkins

Bulletins 1 - 2999

Aeroplanes have been tested for grasshopper control in many parts of the world during the last decade but the insecticides used have been in either dust or spray form.

The aerial distribution of bran bait is quite a recent development in overseas countries and was tried for the first time in Western Australia during the spring of 1949.


New Genera And Species Of Millipeds, Nell B. Causey Jan 1950

New Genera And Species Of Millipeds, Nell B. Causey

Journal of the Arkansas Academy of Science

No abstract provided.


The European Corn Borer, Gerald B. Spawn Sep 1949

The European Corn Borer, Gerald B. Spawn

Agricultural Experiment Station Entomology Pamphlets (1940-1952)

The European corn borer was first recorded from South Dakota i n the summer of 1946. At that time Hr. H. C. Severin and the author found borers in corn in Union and Lincoln and Minnehaha counties. Less than half of one percent of the stalks in the fields were infested at that time. During the summer of 1948 the infestation had spread over most of the corn producing area of our state. By the fall of that year 36 counties were known to be infested . Several fields in the southeastern part of the state had 100 per cent …


The Effect Of Field Applications Of Insecticides On Honey Bees, Frank E. Todd, F. V. Lieberman, William P. Nye, G. F. Knowlton Aug 1949

The Effect Of Field Applications Of Insecticides On Honey Bees, Frank E. Todd, F. V. Lieberman, William P. Nye, G. F. Knowlton

All PIRU Publications

Reports of tests of new insecticides have tended to minimize the practical dangers to beekeeping when these toxicants are applied to crops in bloom. The idea is current that these insecticides are harmless to bees if applied during hours when bees are not on the field. An examination of one alfalfa-seed area, where bee losses from commercial applications were reported, prompted a more critical examination to determine the effect of field applications of these insecticides on bees. This paper is a report of field experiments near Logan. Utah, with early-morning applications of DDT, chlordane, parathion, and toxaphene to alfalfa in …


Ec1506 Corn Rootworm Control In Nebraska, Ephriam Hixson, Martin H. Muma, Roscoe E. Hill Feb 1949

Ec1506 Corn Rootworm Control In Nebraska, Ephriam Hixson, Martin H. Muma, Roscoe E. Hill

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1506 discusses corn rootworm control in Nebraska.


Ec1507 Revised 1949 New Insecticides For The Control Of Grasshoppers In Nebraska, Ephriam Hixson Feb 1949

Ec1507 Revised 1949 New Insecticides For The Control Of Grasshoppers In Nebraska, Ephriam Hixson

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1507 Revised 1949 discusses new insecticides for the control of grasshoppers in Nebraska.


Record Of A Fungus Outbreak Among Adult Bees Of The Genus Andrena, George E. Bohart Jan 1949

Record Of A Fungus Outbreak Among Adult Bees Of The Genus Andrena, George E. Bohart

All PIRU Publications

No abstract provided.


New North American Bees Of The Genus Dufourea (Apoidea: Halictidae) Part Iii, George E. Bohart Jan 1949

New North American Bees Of The Genus Dufourea (Apoidea: Halictidae) Part Iii, George E. Bohart

All PIRU Publications

No abstract provided.


An Annotated List Of The Orthoptera Of Nebraska Part I The Blattidae, Mantidae And Phasmidae, Harold A. Hauke Jan 1949

An Annotated List Of The Orthoptera Of Nebraska Part I The Blattidae, Mantidae And Phasmidae, Harold A. Hauke

Bulletin of the University of Nebraska State Museum (1924–2023)

This paper is the first of a series on the Orthoptera of Nebraska. In 1932, while a graduate student at the University of Nebraska, the author began a taxonomic study of the Orthoptera, the result of which was an unpublished List of the Othoptera of Nebraska. The list has been studied and revised.


Injurious Effects From Contacts With Millipedes, Bruce W. Halstead, Raymond Ryckman Jan 1949

Injurious Effects From Contacts With Millipedes, Bruce W. Halstead, Raymond Ryckman

Medical Arts and Sciences: A Scientific Journal of the College of Medical Evangelists

Millipedes are probably among the least mentioned of the so-called "medically important arthropods." Perusal of a number of the more common texts dealing with the entomological aspects of medicine (Belding, 1942: 600, Craig and Faust, 1940:511, Herms, 1946: 539, Mackie, Hunter, and Worth, 1945:515) revealed the concept, which is commonly believed, that millipedes are not capable of producing injurious effects. A recent experience of the senior author and additional investigation by both writers have prompted the writing of this paper in an effort to broaden scientific thinking regarding the medical significance of this animal.


A Study Of The Heel Flies, Hypodermia Lineatum Devillers And Hypoderma Novis Degeer, In South Dakota, John A. Lofgren Jan 1949

A Study Of The Heel Flies, Hypodermia Lineatum Devillers And Hypoderma Novis Degeer, In South Dakota, John A. Lofgren

Electronic Theses and Dissertations

The heel flies or ox-warble flies and their larvae, commonly called cattle grubs or warbles, are among the most troublesome and costly insect pests of livestock producers in South Dakota. These parasites attack cattle almost exclusively although they may occur at times in other domestic and in wild animals. Infestations in man have been recorded, but these cases are quite rare. This work deals only with the occurrence of the parasites in cattle.


Effects Of Weather, Sanitation And Chlorinated Chemical Residues On House And Stable Fly Populations On Nebraska Farms, Martin H. Muma, Ephriam Hixson Jan 1949

Effects Of Weather, Sanitation And Chlorinated Chemical Residues On House And Stable Fly Populations On Nebraska Farms, Martin H. Muma, Ephriam Hixson

Department of Entomology: Faculty Publications

Since L. O. Howard's (1906) early report on house flies many entomologists have conducted research on these insects. Their reports range from notes on the hibernation of house flies, Musca domestica L., to lengthy papers on the biology and control of house flies and stable flies, Stomoxys calcitrans (L.). Early control studies stressed the importance of sanitatioll, screening and the use of mist type contact insecticides. These standard control measures have not, however, received much attention in the United States since Wiesmann (1943) reported on the pro-longed effectiveness of a new insecticide "Gesarol." Scores of other workers have also published …


Preliminary Geomorphological Studies Of The Lime Creek Area & Preliminary Report On The Lime Creek Sites: New Evidence Of Early Man In Southwestern Nebraska, C. Bertrand Schultz, Gilbert C. Lueninghuener, W. D. Frankforter Nov 1948

Preliminary Geomorphological Studies Of The Lime Creek Area & Preliminary Report On The Lime Creek Sites: New Evidence Of Early Man In Southwestern Nebraska, C. Bertrand Schultz, Gilbert C. Lueninghuener, W. D. Frankforter

Bulletin of the University of Nebraska State Museum (1924–2023)

PALEONTOLOGICAL and archaeological discoveries were made near Cambridge, Nebraska, by the University of Nebraska State Museum field party in the spring of 1947 (Schultz and Frankforter, 1948, pp. 279-280) . Fossils and artifacts were found in situ at the base of a fifty-foot terrace on Lime Creek (University of Nebraska State Museum Localities Ft-41 and Ft-42) and on Medicine Creek just below the mouth of Lime Creek (Ft-50). Lime Creek is located (Fig. 1) in southwestern Nebraska in the southeastern part of Frontier County. It is a tributary of Medicine Creek which in turn is a tributary to the Republican …


Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 5: Keys To Tribes And Genera, Lawrence Saylor Jul 1948

Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 5: Keys To Tribes And Genera, Lawrence Saylor

Entomology Papers from Other Sources

This paper completes my studies covering a synoptic review of the United States dynastine scarab beetles, the preceding four parts having been published in this same JOURNAL.

KEY TO UNITED STATES TRIBES

The genera of the tribes Phileurini and Dynastini were covered in Part 4 of this series, and the genera of the tribe Cyclocephalini in Part 1. The tribe Oryctini was discussed in Part 2 and in Part 3 and was completed in Part 4; these eight United States genera of Oryctini may be separated as follows: KEY TO GENERA OF UNITED STATES ORYCTINI

SUPPLEMENT Euetheola subglabra Schaeffer Since …


Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 4: Tribes Oryctini (Part), Dynastini, And Phileurini, Lawrence W. Saylor May 1948

Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 4: Tribes Oryctini (Part), Dynastini, And Phileurini, Lawrence W. Saylor

Entomology Papers from Other Sources

This paper is the fourth in the series of my United States dynastine scarab beetle studies and completes the specific listings and notes. The fifth, and last, part will include a complete classification of the tribes and genera, from the Nearctic standpoint.

Genus Aphonus LeConte

Tribe DYNASTINI -- Genus Dynastes Kirby, Genus Megasoma Kirb

Tribe PHILEURINI -- Genus Archopbileurus Kolbe, Genus Phileurus Latreille


Insect Pests And Predators In Relation To Alfalfa Seed Setting In Southern Alberta And The Effects On These Insects Of Three Chlorinated Hydrocarbons, Gordon A. Hobbs May 1948

Insect Pests And Predators In Relation To Alfalfa Seed Setting In Southern Alberta And The Effects On These Insects Of Three Chlorinated Hydrocarbons, Gordon A. Hobbs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa-insect investigations, because of necessity, had been neglected in the province of Alberta during the war years. Work was resumed on this project in the spring of 1946 by the writer.

So much progress has been made in the field of insect pest control since the advent of war-born chlorinated hydrocarbons, that it was thought advisable to design an experiment which would test under Alberta conditions the results obtained in Utah where most of this type of research had been previously carried out, and would thus serve to bring investigations in this part of Canada up to date.

It is …


Insect Food Of The Vesper Sparrow, Georger F. Knowlton, William P. Nye Jan 1948

Insect Food Of The Vesper Sparrow, Georger F. Knowlton, William P. Nye

All PIRU Publications

No abstract provided.


Beneficial Insects In Relation To Alfalfa-Seed Production In Utah, George E. Bohart Jan 1948

Beneficial Insects In Relation To Alfalfa-Seed Production In Utah, George E. Bohart

All PIRU Publications

No abstract provided.


New North American Bees Of The Genus Dufourea (Apoidea: Halictidae) Part Ii, George E. Bohart Jan 1948

New North American Bees Of The Genus Dufourea (Apoidea: Halictidae) Part Ii, George E. Bohart

All PIRU Publications

No abstract provided.


The Sarcophagidae Of Guam (Diptera), David G. Hall, Geroge E. Bohart Jan 1948

The Sarcophagidae Of Guam (Diptera), David G. Hall, Geroge E. Bohart

All PIRU Publications

No abstract provided.


A New Sciurid Of Blancan Age From Kansas And Nebraska, Claude W. Hibbard Jan 1948

A New Sciurid Of Blancan Age From Kansas And Nebraska, Claude W. Hibbard

Bulletin of the University of Nebraska State Museum (1924–2023)

The collecting of vetebrate fossils from deposits of Blancan age in Kansas, Nebraska, and Texas during the past twelve years has revealed many interesting forms. Some species have been found to have wide geographic distribution. A large sciurid related to the woodchucks has been recognized from both Kansas and Nebraska and is here described as a new genus and species.


Ec1551 Insect Control In The Production Of Alfalfa Seed, Ephriam Hixson Jun 1947

Ec1551 Insect Control In The Production Of Alfalfa Seed, Ephriam Hixson

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1551 discusses insect control in the production of alfalfa seed.


Ec1507 Revised 1947 New Insecticides For The Control Of Grasshoppers, Ephriam Hixson May 1947

Ec1507 Revised 1947 New Insecticides For The Control Of Grasshoppers, Ephriam Hixson

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1507 Revised 1947 discusses new insecticides for the control of grasshoppers.


A Taxonomic Study Of The Adult Mosquitoes Of Utah County With Notes On The Biology And Distribution Of The More Common Species 1946-1947, Cluff E. Hopla May 1947

A Taxonomic Study Of The Adult Mosquitoes Of Utah County With Notes On The Biology And Distribution Of The More Common Species 1946-1947, Cluff E. Hopla

Theses and Dissertations

In Utah County, information has been lacking concerning the taxonomy and distribution of mosquitoes. With the knowledge of this condition, it is felt that information can be presented which will be of value both to the scienoe of Entomology and the area concerned.


A Taxonomic Study Of The Scolytidae (Coleoptera) Of The Logan Canyon Area Of Utah, Stephen L. Wood May 1947

A Taxonomic Study Of The Scolytidae (Coleoptera) Of The Logan Canyon Area Of Utah, Stephen L. Wood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In spite of the great economic importance of north American Scolytidae, many taxonomic descriptions remain inadequate for the identification of species, and existing keys have been made obsolete by the recent description of new species. To bring these keys up to date and make them useful to students and practical foresters, detailed studies of the morphological structure of the various species are necessary. The purpose of the present investigation has been to clarify and revise existing keys and to describe briefly the species of Scolytidae occurring in the Logan Canyon area of Utah. The following keys and descriptions will be …


Ec1549 External Parasites Of Chickens And Ddt, Ephriam Hixson, Martin H. Muma Apr 1947

Ec1549 External Parasites Of Chickens And Ddt, Ephriam Hixson, Martin H. Muma

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1549 discusses external parasites of chickens and DDT.


Comparison Between The Reducing Action Of Monosaccharide Sugars And Their Efficacy In Supporting The Life Of Lucilia Sericata Meig, Cyril E. Abbott Jan 1947

Comparison Between The Reducing Action Of Monosaccharide Sugars And Their Efficacy In Supporting The Life Of Lucilia Sericata Meig, Cyril E. Abbott

Journal of the Arkansas Academy of Science

No abstract provided.