Life Sciences Commons^™

Migration Of The Army Cutworm, Chorizagrotis Auxiliaris (Lepidoptera: Noctuidae). I. Evidence For A Migration, Kenneth P. Pruess

Department of Entomology: Faculty Publications

Indirect evidence is presented to support the conclusion that the army cutworm, Chorizagrotis auxiliaris (Grote), migrates from the Great Plains to the Rocky Mountains during the spring and the same individuals return to the Plains in the fall. Spring activity occurs progressively later from east to west, the delay being greater than that caused by emergence but commensurate with flight potential of the moth. Flight is predominately from east to west and a constant turnover of moths occurs at all locations on the Plains. Seasonal occurrence in the mountains coincides with the period of inactivity on the Plains, during which …

European Corn Borer, Ostrinia Nubilalis (Hbn.) Populations In Field Corn, Zea Mays (L.) In The North Central United States, R. E. Hill, A. N. Sparks, C. C. Burkhardt, H. C. Chiang, M. L. Fairchild, W. D. Guthrie

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

A long-range study of the annual changes in corn borer populations in the North Central States was started in Minnesota, Iowa, Kansas and Nebraska in 1955 and in Missouri and Ohio in 1956. This investigation was a phase of a broader Regional Project, NC-20, entitled "Factors Influencing Corn Borer Populations" and was undertaken to measure by standardized procedures the seasonal changes in abundance of the European corn borer, Ostrinia nubilalis (Hbn.), under cropping procedures in different locations within, the North Central States. Much valuable information has been accumulated on the abundance and effects of various physical and biotic factors on …

Distribution Of Eggs And Leaf Mines Of Choristoneura Houstonana (Lepidoptera: Tortricidae) Attacking Eastern Red Cedar, Juniperus Virginiana, Elvis A. Heinrichs

Department of Entomology: Faculty Publications

Cedar at Larned, Kansas, appeared to be more severely damaged in the upper and southern portions of the trees. There was a significant difference, in numbers of eggs and leaf mines, between the upper and lower halves and between compass directions; the upper and southern portions of the trees being most highly infested.

Choristoneura houstonana (Grote) is a pest of eastern red cedar, Juniperus virginiana, grown as a home landscape ornamental in shelter belts and windbreaks in western Kansas. It has been present for many years but the first reliable record in Kansas was in 1964, when it was sent …

Protecting Honey Bees From Pesticides, U.S. Department Of Agriculture

An

Honey bees frequently are in danger of being killed when crops are treated with pesticides. Honey bees produce honey and beeswax valued at $55 million annually; but even more significant, the annual value of crops that require bee pollination exceeds $1 billion. For this reason, farmers and beekeepers should cooperate in protecting the bees from pesticides. Observance of precautions recommended in this publication can significantly reduce bee losses from pesticide poisoning.

Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent

Bulletin of the University of Nebraska State Museum

A new fossil sciurid, Citellus kimballensis, is described. This new species was found in the Kimball Formation, uppermost Ogallala (very late Pliocene) at the University of Nebraska State Museum Collecting Locality Cn-1O1, northeast of Sidney, Cheyenne County, Nebraska. Characters of the dentition and skull of C. kimballensis are compared with those of other species of the genus, and with those of Cynomys.

The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble

Bulletin of the University of Nebraska State Museum

Larandrena contains a single species, A. miserabilis Cresson. This small, common Andrena is found throughout most of the United States and southern Canada in the spring. The subgeneric position, nomenclature, redescription. variation, notes on the biology, parasites, range, seasonal activity and plant host records are included. A. rniserabilis is thought to be an important pollinator of fruit trees.

A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner

Bulletin of the University of Nebraska State Museum

An uncrushed skull and associated skeletal elements of a very large rhinoceros are the basis for the description of a new species of Aphelops from Frontier County, Nebraska. The major differences are: the skull is much larger in most dimensions than other Aphelops; it has an extremely elevated occipital region in comparison to Aphelops mutilus; the narial notch is retracted to a point perpendicular to the center of molar one; and the teeth are more hypsodont than any other species of this genus. The sediments which yielded the skull and skeletal parts are considered to be Kimballian in …

Management Of Wild Bees (In Agriculture Handbook), George E. Bohart

All PIRU Publications

No abstract provided.

Biology Of Duforea And Of Its Cleptoparasite, Neopasites (Hymenoptera: Apoidea), Phillip F. Torchio, Jerome G. Rozen Jr., George E. Bohart, Marjorie S. Favreau

All PIRU Publications

No abstract provided.

Breeding Honey Bees For Pollination Of Specific Crops, O. Mackensen, William P. Nye

All PIRU Publications

No abstract provided.

A Revision Of The Genus Furnaricola(Mallophaga) With Descriptions Of New Species, M. A. Carriker Jr.

Department of Entomology: Faculty Publications

The present paper has been prepared with much care for two reasons: The first and most urgent is to clarify the taxonomic position of the genus itself, which has been a controversial one since it was placed under the synonomy of Rallicola in the 1952 "Checklist of Mallophaga" by Hopkins and Clay. The second reason is to describe additional material which has been collected by the author since the genus was established in 1944 and also to record its occurrence on two other families of birds, from one of which no Mallophaga have previously been taken..

It will be noted …

Managing The Alfalfa Leaf-Cutting Bee For Higher Alfalfa Seed Yields (Revised), George E. Bohart, George F. Knowlton

All PIRU Publications

No abstract provided.

A Revision Of The Bees Of The Genus Andrena Of The Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae), Wallace E. Laberge

Bulletin of the University of Nebraska State Museum

This paper is the first part of a monograph of the bee genus Andrena in the western hemisphere and treats the subgenus Callandrena. Available data regarding phylogeny, distribution, biology, and flower preferences are presented together with keys to separate the species, diagnoses and descriptions of the species and discussions of geographic variation when applicable. Seventy-nine species and one subspecies are recognized. Sixteen names are relegated to synonymy, one to homonymy and eight are removed from the subgenus Callandrena. The thirty-nine species new to science are: aerifera, aeripes, afimbriata, ardis, auripes, balsamorhizae, beameri, bilimeki, bullata, calvata, dreisbachorum, fulminea, fulminoides, …

The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra

Bulletin of the University of Nebraska State Museum

The contact between the Brule Formation (Oligocene) and the Gering Formation (Miocene) can be readily distinguished in the Wildcat Ridge area, as elsewhere in western Nebraska. At the critical fossiliferous exposures at Castle Rock in Scotts Bluff County, the contact on the south face between the two formations is defined as 129 feet above the base of the "Upper Ash" bed, which corresponds to the upper portion of Darton's (1899, PI. C, Fig. D, following p. 754) "sandy phase" in the upper part of the Brule. Certain key beds in the Gering Formation can be traced laterally from a channel …

Beekeeping Regions In The United States, William P. Nye

All PIRU Publications

No abstract provided.