Entomology Commons^™

Problems In The Development Of Social Behavior And Communication Among Insects, Charles D. Michener

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No abstract provided.

Notes On Food Habits Of The Western Harvester Ant, George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

Notes On Mating, Prey Provisioning, And Nesting Of Sphex Procerus (Dahlbom), George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

Yearly Population Fluctuation Of Bombus Morrisoni At Fredonia, Arizona, George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

Wild Bees For Pollination Of The Alfalfa Seed Crop In Utah, George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

A Larva Of Trichodes Ornatus From A Pollen Trap On A Hive Of Honey Bees, William P. Nye, George E. Bohart

All PIRU Publications

No abstract provided.

Forest Fires In The Northern Rocky Mountains, J S. Barrows

The Bark Beetles, Fuels, and Fire Bibliography

This is a report on an analysis of 36,000 forest fires in the northern Rocky Mountains. The analysis was made to gain a better understanding of the occurrence, behavior, control, and effects of fires, and in turn to obtain essential information required for improved planning and management of fire protection systems. The results present answers to these questions: 1) What is the magnitude of the regional fire problem? 2) What are the basic features of fire behavior under various topographic, fuel, and weather conditions? 3) What have been the results of organized fire control programs including fire prevention, detection, communication, …

Honey Bees For Higher Yields Of Alfalfa Seed In Utah, George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

Hive And Field Mortality Of Honey Bees In Northern Utah Due To Effects Of Certain Ecological And Chemical Factors, Shih Chun Ma

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The honey bee is the most important pollinating insect in Utah, because various important crops such as fruits, legumes, and vegetable seed crops depend chiefly on it for pollination. In the past, honey bees have suffered repeated severe death losses through contact with arsenic and other agricultural chemicals. Recently the newer insecticides, such as DDT, chlordane, parathion, benzene hexachloride, lindane, toxaphene, and several kinds of miticides have further complicated the problem of bee survival. In addition, natural enemies such as predators and parasites and some unfavorable environmental conditions, including unfavorable temperature and humidity, wind, storm, and other changeable weather conditions, …

Observations On The Mating Habits Of Halictid Bees, George E. Bohart

All PIRU Publications

No abstract provided.

New Insecticides. What Is Their Effect On Bees When Applied To Flowering Alfalfa?, George F. Knowlton, William P. Nye, F. V. Lieberman, F. E. Todd, George E. Bohart

All PIRU Publications

No abstract provided.

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

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

All PIRU Publications

No abstract provided.

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 …

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

All PIRU Publications

No abstract provided.

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

All PIRU Publications

No abstract provided.

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

All PIRU Publications

No abstract provided.

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

All PIRU Publications

No abstract provided.

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 …

A Simple Method For Mounting Aphids, William P. Nye

All PIRU Publications

No abstract provided.

Some Records Of Parasitism Of Solitary Bees By Conopid Flies, John W. Macswain, George E. Bohart

All PIRU Publications

No abstract provided.

The Phorid Flies Of Guam, George E. Bohart

All PIRU Publications

No abstract provided.

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

All PIRU Publications

No abstract provided.

An Arsenic Survey In Utah, George F. Knowlton, L. W. Jones, William P. Nye

All PIRU Publications

No abstract provided.

Lizards Feeding On Ants In Utah, George F. Knowlton, William P. Nye

All PIRU Publications

No abstract provided.

Mirid-Bug Injury As A Factor In Declining Alfalfa-Seed Yields, Charles J. Sorenson

Faculty Honor Lectures

During the forty or more millions of years that insects have inhabited the earth they have developed remarkable adaptations and great powers of reproduction that have enabled them to spread over most of the world and occupy all of its habitable environments. In cultivating the land and in growing crops, man has disturbed the balance in nature which formerly prevailed. By doing this he has unwittingly assisted many insect species to multiply in unprecedented numbers by providing them with more delectable food in abundance and by transporting them from place to place and from continent to continent in his migrations …