Entomology Commons^™

How To Control Flystrike In Sheep, H E. Fels

Journal of the Department of Agriculture, Western Australia, Series 4

FLYSTRIKE affects incomes and efficiency because a large part of the work done on sheep farms is to prevent or treat it, and because it kills sheep and reduces the amount and quality of production.

Hatching Of Sod Webworm Eggs In Relation To Low And High Temperatures, Ellis L. Matheny, E. A. Heinrichs

Department of Entomology: Faculty Publications

Eggs of 12 species of sod webworm were exposed for various periods to temperatures of 0, 10, and 45°C. Hatchability was compared with control eggs kept at 25°C. Short exposures to any temperature did not significantly affect percent hatch. Prolonged exposure resulted in a significant decrease in hatchability for several species at 0° and for all species at 45°C. There was a significant difference in hatchability between the 3 generations of Crambus teterrellus (Zincken) and of Pediasia trisecta (Walker) at extreme temperatures. Populations of Agriphila ruricolella (Zeller), collected at 2 elevations, differed significantly in hatching percentage and developmental rate.

The Cytogenetics Of The Salivary Gland Chromosomes Of Three Wild Type Strains Of Drosophila Melanogaster, Rosemary Ann Harris

Masters Theses

This investigation involves the cytogenetics of three strains of field-collected, wild-type Illinois Drosophila melanogaster. These three strains were collected from Charleston, Channahon, and Olney, Illinois, in 1967.

The purpose of this study was to compare cytogenetically these three strains and to determine if there exists differences among them. First, the chromosomes themselves were studied for the purpose of identifying the four chromosomes of D. melanogaster by their characteristic banding patterns. Then, the chromosomes of the three strains were examined for chromosomal aberrations, principally inversions. The cytogenetics of the chromosomes of the three strains were then compared and contrasted.

Photographs …

Machairodont Cats From The Early Pleistocene Broadwater And Lisco Local Faunas, C. Bertrand Schultz, Larry D. Martin

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

A new species of Ischyrosmilus (I. crusafonti) is reported from the Early Pleistocene Broadwater Local Fauna of Morrill County, Nebraska. Ischyrosmilus sp. is reported from the Early Pleistocene Lisco Local Fauna. Megantereon is reported from the Broadwater Local Fauna and this is the first record of the genus from North America.

Collecting Slime Flux Feeding Coleoptera In Japan, Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Sappy wounds of injured or diseased trees entice a wide variety of insects. Carter (1945) stated that when fluxing is prolific or long continued, air-borne bacteria, yeasts, and fungi contaminate the oozing sap, ferment it and produce the material called slime flux. Apparently the oozing flux is toxic to the flux site and so prevents callusing by the tree. Consequently, the same tree usually can be a good collecting site for insects from year to year. My stay in Japan spanned four years, and collecting at flux sites was one of the most fruitful areas of endeavor. As soon as …

Onion Pollination As Affected By Different Levels Of Pollinator Activity, George E. Bohart, William P. Nye, L. R. Hawthorn

All PIRU Publications

No abstract provided.

A Study Of Insects Attacking Pinus Flexilis James Cones In Cache National Forest, Thomas Evan Nebeker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Six species of insects were found attacking limber pine cones from July 26, 1968, through October 4, 1969, in Cache National Forest. The three species considered of major importance are: Conophthorus flexilis Hopkins, Dioryctria abietella (D. & S.), and D. sp. near or disclusa Heinrich. The three minor species encountered are; Bradysia sp., Trogoderma parabile Beal, and Asynapta keeni (Foote). In addition to the major and minor cone pests three parasites, Apanteles sp. prob. starki Mason, Elacherus sp., and Hypopteromalus percussor Girault were found associated with the cone pests.

C. flexilis, which completely destroys the cone, was ranked as …

The Evolution Of Parasitism Among Bees, George E. Bohart

Faculty Honor Lectures

Before discussing parasitic bees, I will present a rough outline of the biology of "ordinary" or non-parasitic bees. The superfamily Apoidea (bees) includes perhaps 25,000 or 30,000 species divided into nine families by recent authorities (Stephen, Bohart, Torchio, 1969) . A common biological thread holding this vast assemblage together is the provision by adults of pollen and nectar for their young. Only in the honey bees (the genus Apis which includes four species) are the larvae fed primarily on a different substance (a secretion of the pharyngeal glands) , and even this is derived from pollen and honey eaten by …

An Annotated List Of Grasshoppers (Orthoptera, Acrididae) From The Eleven Panhandle Counties Of Nebraska, A. F. Hagen

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A description of the study area is presented indicating the ecological niches that exist in the Nebraska Panhandle. Seventy-five species of grasshoppers are listed from the 11 Panhandle counties. Twenty-one occur in the subfamily Acridinae, 29 in Oedipodinae, 24 in Cyrtacanthacridinae and 1 in Romaleinae. Ecological, taxonomic and distributional data are presented.

Sod Webworm (Lepidoptera: Pyralidae: Crambinae) Moths Collected In Light Traps, Elvis A. Heinrichs, Ellis Matheny

Department of Entomology: Faculty Publications

Thirteen species of sod webworm moths were collected during 1968. Distinct differences in fijght dates occurred among the species. Trap data indicated that seven species were univoltine while six were most likely multivoltine.

Sod webworm species collected as adults in light traps from May to October: Pediasia trisecta, P mutabilis, Chrysoteuchia topiaria, Agriphila vulgivagella, A. ruricolella, Microcrambus elegans, Argyria nivalis, Crambus alboclavellus, C. praefectellus, C. laquetellus, C. leachellus, C. satrapellus

The Response Of Kentucky Bluegrass Turf To Insecticidal Treatments, E. A. Heinrichs, Leonard C. Lehman, Lloyd M. Callahan, C. J. Southards, Ellis L. Matheny

Department of Entomology: Faculty Publications

The most common insect pests of Kentucky bluegrass (Poa pratensis L.) in Tennessee are sod webworms and white grubs. Attempts to control these insects with insecticides has, at times, resulted in the entire destruction of the lawn by sod webworms. Pass (1965) has shown that applications of aldrin, chlordane, and dieldrin increased the webworm population 2-3 fold. Streu and Vasvary (1966) found the same phenomenon in chinch bug control. Both Pass and Streu believed that this population increase of the target pest may have been related to an interference in some population-limiting mechanism, such as the natural enemies, but …

Grain Aeration On The Farm, G D. Rimes

Journal of the Department of Agriculture, Western Australia, Series 4

ALTHOUGH grain aeration is a well known and widespread technique employed to prevent insect development in stored grain, the installations are invariably designed for large scale grain handling authorities.

Experimental work carried out in Western Australia over the last four storage seasons has shown that simple unsophisticated equipment can be of direct use in farm storage.

Pollination Of Onion Seed Affected By Environmental Stresses, William P. Nye

All PIRU Publications

No abstract provided.

The Evolution Of Parasitism Among Bees, George E. Bohart

All PIRU Publications

No abstract provided.

Selective Breeding Of Honeybees For Alfalfa Pollen Collection: With Tests In High And Low Alfalfa Pollen Collection Regions, William P. Nye, O. Mackensen

All PIRU Publications

No abstract provided.

Commercial Production And Management Of Wild Bees--A New Entomological Industry, George E. Bohart

All PIRU Publications

No abstract provided.

The Influence Of Photoperiod On The Flight Activity Of Honeybees, J. A. Kefuss, William P. Nye

All PIRU Publications

No abstract provided.

Fire Weather : A Guide For Application Of Meteorological Information To Forest Fire Control Operations, Mark J. Schroeder, Charles C. Buck

The Bark Beetles, Fuels, and Fire Bibliography

Weather is never static. It is always dynamic. Its interpretation is an art. The art of applying complex information about weather to the equally complex task of wildland fire control cannot be acquired easily-especially not by the mere reading of a book. The environment is in control in wildland firefighting. Free-burning fires are literally nourished by weather elements, atmospheric components, and atmospheric motion. Outguessing mother nature in order to win control is an extremely difficult task. We need to soothe her with understanding. We have attempted to present information in such a way that your daily and seasonal awareness of …

Notes On The Habitat And Distribution Of The Odonata Of Franklin County, Arkansas, Jim Houston

Journal of the Arkansas Academy of Science

No abstract provided.

Butterflies Of Arkansas Family Nymphalidae, E. Phil Rouse

Journal of the Arkansas Academy of Science

No abstract provided.

The Development Of The Alfalfa Pollen-Collecting (Apc) Honey Bee, William P. Nye

All PIRU Publications

No abstract provided.

Should Beekeepers Keep Wild Bees For Pollination?, George E. Bohart

All PIRU Publications

No abstract provided.

The Ethology Of The Wasp, Pseudomasaris Edwardsii (Cresson), And A Description Of Its Immature Forms (Hymenoptera: Vespoidea, Masaridae), Phillip F. Torchio

All PIRU Publications

In a greenhouse, each nest of Pseudomasaris edwardsii (Cresson) was constructed of nectar-moistened soil, was solitary and was placed in open but concealed niches attached to a variety of substrates. The wasp anchored her egg by its posterior tip to the bottom of the cell, deposited a jellylike cylindrical provision composed of Phacelia pollen and nectar and constructed a cell cap. Soil carried to the nest was attached to the post genal surfaces of the female's head, and the pollen and nectar were transported in her honey stomach. Cells were clustered and attached to each other and to the substrate …

Control Of Hide Beetles, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

SKIN and hide beetles, members of the Dermestid beetle family, can cause serious damage to hides and skins.

British authorities are particularly concerned with the incidence of hide beetle infestation in sheepskins imported from Australia.

Local graziers and country abattoirs should pay attention to this problem as damage by hide beetles can greatly reduce the value of all types of skins.

A New Tribe Of Saber-Toothed Cats (Barbourofelini) From The Pliocene Of North America, C. Bertrand Schultz, Marian R. Schultz, Larry D. Martin

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

A new genus of Pliocene Saber-toothed felid, Barbourofelis, is proposed and two new species B. fricki and B. morrisi are described. These two forms and other described material represent an unusual lineage of felids with long sabers, shortened crania, and massive postorbital bars. The tribal name Barbourofelini is proposed for this lineage which is presently known in North America from deposits ranging in age from Clarendonian through Kimballian. The Barbourofelini apparently migrated from Eurasia to North America in the Late Miocene or Early Pliocene. Sansanosmilus of the French Vindobonian appears to represent the ancestral stock of these cats. The …

Screening Of Chemosterilants Against The Southern House Mosquito Culex Pipiens Quinquefasciatus, M. D. Boston, R. S. Patterson, C. S. Lofgren

Entomology Papers from Other Sources

In view of the current interest in the use of sterile males to control or eradicate some species of mosquitoes, information is needed about chemicals or other methods that induce sterility in these insects. Thus, at the Insects Affecting Man Investigations Laboratory at Gainesville, Fla., we have begun to evaluate the sterilizing effect of chemicals on the southern house mosquito, Culex pipiens quinquefasciatus Say.

Suppression And Elimination Of An Island Population Of Culex Pipiens Quinquefasciatus With Sterile Males, R. S. Patterson, D. E. Weidhaas, H. R. Ford, C. S. Lofgren

Entomology Papers from Other Sources

The release of 8,400 to 18,000 males per day of Culex pipiens quinquefasciatus Say which had been exposed to a sterilizing agent (thiotepa), suppressed and eliminated an indigenous population of this mosquito on an island off the cost of Florida in a 10 week period. Sterile males were effective in seeking out and mating with females on the island.

Lupin Diseases, H L. Harvey

Journal of the Department of Agriculture, Western Australia, Series 4

The two major diseases of lupins in Western Australia, brown spot and bean yellow mosaic, can be reduced by careful management of lupin crops.

Comparative Morphology Of The External Male Genitalia Of Gymnetis (Coleoptera: Scarabaeidae), Bhatti A. Rashid

Masters Theses

No abstract provided.

An Experimental Study Of The Food Plant Preferences Of The Black Cutworm, Agrotis Ypsilon (Hufnagel), Alan C. York

Masters Theses

No abstract provided.