Entomology Commons^™

Distribution Of Plants With Extrafloral Nectaries And Ants At Two Elevations In Jamaica, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Frequencies of plants with extrafloral nectaries were determined for two elevations in Jamaica. Extrafloral nectaries were found on 0.28 of the plants at sea level (Happy Grove, Portland) and 0.00 of the plants at 1310 m (Whitfield Hall, St. Thomas). Ant abundance, as indicated by discovery of and recruitment to baits, was greater at the lower elevation site. However, despite the apparent absence of plants with extrafloral nectaries, there were abundant ants at 1310 m.

Flowering Vegetation Of South Texas As An Aggregation Site For Screwworm Flies, Cochliomyia Hominivorax (Coquerel), Geral Lenford Long

Theses and Dissertations - UTB/UTPA

Flowering vegetation was investigated to determine its potential as an aggregation site for the mating of screwworm flies, Cochliomyia hominivorax (Coquerel). Fly activity was observed at vegetation on a typical south Texas shrub community. Noted were the species of vegetation present and the phenology of their flowering. Screwworm flies were found to be attracted to specific species of brush; however, in the absence of the most attractive species, the flies responded to secondary species. Both feeding and mating behavior were observed on vegetation.

Olfaction and visual mechanisms of aggregation were investigated. Results from an olfactometer showed the attractancy of some …

Larval Biology Of Some Utah Chrysididae, Bakary Vassery Ouayogode

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Biologies of eight chrysidid species were described. These wasps parasitized bees and wasps collected in trap nests set at several sites in two canyons near Logan, Utah. The completed nests were taken to the laboratory and the parasitized ones were kept for study of the development a l biology and behavior of both host and parasites.

The larval stages of Chrysura smaragdicolor, Chrysura sonorensis, Chrysis parkeri, Chrysis derivata, Chrysis coerulans, Cerotachrysis enhuycki, Trichrysis doriae and Hedychridium solierellae were studied. Omalus iridescens and Omalus purpuratus larvae were observed only in the fifth instar. The major …

A Study On The Species Composition Of Mecoptera In Macoupin County, Illinois, Bradley Huson

Insect Population Studies

No abstract provided.

A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.

Masters Theses

A two year census of the cave beetle Neaphaenops tellkampfi (Coleoptera, Carabidae) was conducted in Mushroom Cave, Hart County, Kentucky. Three methods were used to estimate populations of this beetle. A rise in population in certain areas of the cave was shown to occur in Mid-winter. The population as reported is felt to represent a portion of a much larger population which migrates toward the cave entrance beacuse of food shortages in winter with a summer movement back into deep cave habitat when the eggs of Hadenoecus subterraneus are plentiful.

Flystrike In Sheep : Secondary And Tertiary Flies Striking Sheep In Western Australia, N Monzu

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

Unlike primary species of blowflies, the secondary and tertiary species of flies cannot initiate a strike, but their activity in the presence of the primary blowflies becomes significant in the death of struck sheep. This is particularily so when the hairy maggot blowfly is involved. Future management of sheep flocks to minimise deaths may require recognition of these secondary and tirtiary flies.

This article presents some basic facts about these flies.

Fumigating A Farm To Control Grain Insects, J H. Moulden

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

During the past year, two major projects for control of grain insects were organised on Western Australian farms. Both excercises aimed to eradicate grain pests which would have seriously threatened grain exports if they had become established.

The fumigation was done jointly by the Entemology branch of the Department of Agriculture, and the Agricultural Protection Board.

Learning To Live With Spotted Alfalfa Aphid, M Grimm

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

The spotted alfalfa aphid which can devastate lucerne crops and perhaps also medic pastures, has been established in Western Australia since early 1978. However several methods of control are being developed, which could allow continued production of lucerne.

New Dung Beetles At Work In Western Australia, T J. Ridsdill-Smith

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

Two kinds od dung beetles are active in the agricultural areas of Western australia. In one group are the native beetles which are mainly active in winter, and in the other group are beetles introduced from overseas. The introduced beetles are mainly active in summer and have already produced some spectacular results

Pollen Manipulation And Related Activities And Structures In Bees Of The Family Apidae, Charles D. Michener, Mark L. Winston, Rudolf Jander

Mi

No abstract provided.

The Classification Of Halictine Bees: Tribes And Old World Nonparasitic Genera With Strong Venation, Charles D. Michener

Mi

No abstract provided.

Effect Of Cold Acclimation On Cold Tolerance Of Laboratory-Reared Diapausing Pink Bollworms, Robert J. Wright, H. M. Graham

Department of Entomology: Faculty Publications

Cold acclimation and cold tolerance were studied in laboratory-reared diapausing pink bollworms, Pectinophora gossypiella (Saunders), conditioned at 5°, 10°, and 15° C for 2,4, and 8 wk. Larval mortality, abnormal pupation and total mortality from 2-h exposure to sub-zero temperatures increased similarly as the temperature decreased from _6° to -15° C. Exposure to -9° C and above had little effect. The effect of cold conditioning on cold tolerance was most important at the _12° C exposure. Conditioning at 5°, 10°, and 15° C reduced total mortality after exposure to _12° C, compared to unconditioned larvae. Conditioning of larvae at 10° …

A Comparative Anatomical Study Of Mandibular Structure In Bees, Charles D. Michener, Anne Fraser

Mi

No abstract provided.

Residues Of Carbofuran Applied As A Systemic Insecticide In Irrigated Wetland Rice: Implications For Insect Control, J. N. Seiber, Elvis A. Heinrichs, G. B. Aquino, S. L. Valencia, P. Andrade, A. M. Argente

Department of Entomology: Faculty Publications

The behavior of carbofuran residues in rice plants treated by broadcast, soil incorporation, and root-zone application,and by seedling root-soak and root-coat technique was studied. Placement of insecticide in gelatin capsules in the root zone gave good persistence (about 60 days) and leaf residue (as much as 45 ppm at 10 days after treatment). Among the methods tested it also controlled early season pests best and gave the highest grain yields. Soil incorporation and root-zone placement with a liquid-band applicator was also more efficient than paddy-water broadcast in getting insecticide to the plant; soil incorporation provided slightly longer persistence (60 days) …

The Parasitic Groups Of Halictidae (Hymenoptera, Apoidea), Charles D. Michener

Mi

No abstract provided.

New Header Treatment Aids Weevil Control, J H. Moulden

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

A new insecticide formulation supplied in high pressure cylinders simplifies weevil control in headers.

Nest Architecture Of Polistine Wasps, James M. Poff

Journal of the Minnesota Academy of Science

Wasps of the genus Polistes build two basic types of unenclosed paper nests. The mesocaulus type nest has fewer peripheral cells and comes closer to having the minimum number of total cell walls than the acrocaulus type nest. It is suggested that natural selection has favored this more economical nest form in regions with short growing seasons.

Attempts To Enrich The Parasite Fauna Of The European Corn Borer In Minnesota, H. C. Chiang, D. F. Palmer

Journal of the Minnesota Academy of Science

Four parasitic insect species were tested in laboratory experimentation for adaptability to the European corn borer (ECB). Apanreles sesamiae, Apanteles flavipes and Chelonus knabi did not adapt to the ECB, Lixophaga diatraeae was able to survive on ECB. Three other species. Macrocentrus grandii, Eriborus terebrans and Lydella rhompsoni, all known parasites of ECB, were obtained and reared in the laboratory on ECB for propagation, release and ecological studies. Methodology for experimentation and propagation of parasites was described.

Thermal Shock Effects On Larvae Of Caddis Fly Brachycentrus Americanus, Jack A. Salmela, Richard L. Anderson

Journal of the Minnesota Academy of Science

Wild-collected Brachycentrus americanus larvae were subjected to thermal shocks of 30-minute and 60-minute duration in June, September, and December of 1976. Temperatures at collection were 14.7 , 10.4 , and 1.2 C, respectively. The TL50's for both 30-minute and 60-minute shock durations ranged from 33.3 C to 34.0 C for each month, except for a 30-minute exposure in September, which had a TL 50 of 34.6 C. Larvae from a December exposure were held for 16 days to observe postexposure behavior. Feeding was reduced 50 percent among specimens exposed to temperatures 1.2 C below the 30-minute TL 50 and 3.6 …

Specificity Of The Trail Pheromones Of Four Species Of Fire Ants, D. P. Jouvenaz, C. S. Lofgren, D. A. Carlson, W. A. Banks

Entomology Papers from Other Sources

The species specificity of trail pheromones of fire ants, Solenopsis spp., has been studied by Wilson (1962; Anim. Behav. 10: 137-47) and Barlin, Blum, and Brand (1976; J, Insect Physiol. 22: 839-44). Our study, stimulated by taxonomic advances since Wilson's work and conducted concurrently with that of Barlin et al., is presented here to confirm and supplement the latters' observations, and to report some differences in results.

Sex Pheromone Of The Tsetse Fly: Isolation, Identification, And Synthesis Of Contact Aphrodisiacs, D. A. Carlson, P. A. Langley, P. Huyton

Entomology Papers from Other Sources

Sex pheromones isolated from the cuticle of the female tsetse fly, Glossina morsitans morsitans Westwood, release mating behavior in the malefly at ultra- short range or upon contact with baited decoys. Three active components were iden- tified as 15,19-dimethylheptatriacontane, 17,21-dimethylheptatriacontane, and 15,19,23-trimethylheptatriacontane. Chemical and biological comparisons show that the natural and synthetic compounds are identical.

Genetic Method For The Preferential Elimination Of Females Of Anopheles Albimanus, J. A. Seawright, P. E. Kaiser, D. A. Dame, C. S. Lofgren

Entomology Papers from Other Sources

Recent field experiments demonstrated the possibility of using the sterile male method for the control of Anopheles albimanus Wiedemann, the most impor- tant vector of human malaria in Central America. Until now there was no practical method for excluding females from the releases of sterile males. A genetic method was developed for the preferential elimination of females during any of the four life stages. This genetic sexing system utilizes propoxur (o-isopropoxyphenyl methyl- carbamate) susceptibility as a recessive conditional lethal, a T(Y:2R) translocation, and an In(2R) inversion. The propoxur resistance allele (dominant) was linked to the Y chromosome via a radiation-induced …

First Year Corn Damage - Northern Corn Rootworm Ovipositional Studies, Thomas W. Hedrick

Electronic Theses and Dissertations

The purpose of this study was to determine the factors involved in first year corn damage by corn rootworm beetles and to sample small grain stubble for adult dispersion and oviposition.

Controle De Anticarsia Gemmatalis Hübner, 1818 (Lepidoptera- Noctuidae) Com Ph 6040 Em Baixas Dosagens, E. A. Heinrichs, R. F. Pires Da Silva

Department of Entomology: Faculty Publications

Em estudo realizado na Estação Experimental Agronômica da Universidade Federal du Rio Grande do Sul, foi verificada a ação de cinco dosagens de PH 6040 (1·(4-chlorophenyl)-3-(2,6 difluorobenzoyl)-Urea) sobre a «Lagarta da soja», Anticarsia gemmatalis.

Em blocos casualizados, o produto foi testado nas dosagens de 5, 10, 20, 40 e 80 gramas de p.a./ha. A análise estatistica evidenciou superioridade das dosagens de 20, 40 e 80 gramas, que proporcionaram periodo mais longo de proteção das plantas contra o desfolhamento provocado pela prage bem como maiores rendimentos de grãos.

Avaliação Dos Danos Causados Por (Westwood, 1837) (Hemiptera, Pentatomidae), Em Diferen Tes Niveis E Épocas De Infestação, Na Qualidade Da Semente De Soja (Glycine Max (L.) Merrill), M. H. M. Galileo, Elvis A. Heinrichs

Department of Entomology: Faculty Publications

Assessment of soybean seed quality in relation to the damage caused by Piezodorus guildinii (Westwood, 1837) (Hemiptera, Pentatornidae) at various infestation levels and at diferent stages of soybean development (Glycine max (L.) Merrill). Stinkbug effect on soybean seed quality was studied. Field tests were carried out in Guaiba, Rio Grande do Sul, 1974/75. Soybean plants were artificially infested at various densities of Piezodorus guildinii (Westwood, 1837) per 0.5m of row and at different stages of soybean development by means of isolation cages. Stinkbug infestations restricted from full bloom up to the beginning of pod formation do not result in …

Retençáo Foliar Em Plantas De Soja (Glycine Max (L.) Merrill), Resultante Da Açáo De Piezodorus Guildinii (Westwood, 1837) (Hemiptera, Pentatomidae), Em Diferentes Níveis E Épocas De Infestaçáo, M. H.M. Galileo, Elvis A. Heinrichs

Department of Entomology: Faculty Publications

Foliar retention in soybean (Glyaine max (L.) Merril) as effected by levels and period of infestation with Piezodorus guildinii (Westwood, 1837) (Herniptera, Pentatornidae)

The effect of stinkbug on foliar retention in soybean was studied. Field tests were carried out in Guaiba, Rio Grande do Sul, 1974/75. Soybean plants were artificially infested at various densities of Piezodorus guildinii (Westwood, 1837), per 0,5m of row and at different stages of soybean development by means of isolation cages. Foliar retention occurred when plants were infested continuosly, from full to the complete physiological maturity of the seed. This phenomenon was not observed when infestations …

Western Corn Rootworm Sex Pheromone; Field Trapping Studies, Michael J. Lockwood

Electronic Theses and Dissertations

The purpose of this study was to explore the potential of monitoring field populations of the NCR and WCR beetles with pheromone baited sticky traps. Predictions of CRW infestations in corn fields on a single field basis have yet to be achieved. The objectives of this study were: 1. To determine the effects of trapping procedures on CRW beetle trap catch variability: trap design, trap height, pheromone age, pheromone concentration and beetle density. 2. To determine the impact of environmental factors on daily trap catch variability: temperature (OC), wind speed (m/sec), and relative humidity (%) taken at hourly intervals. 3. …

Drosophila Pseudoobscura Of The Great Basin, Monte E. Turner

Theses and Dissertations

Four Utah populations of Drosophila pseudoobscura from the Wasatch Mountains in Utah were sampled and characterized for third chromosome gene arrangements. The original samples in this area were taken in 1940 and 1950. At that time the populations were essentially monomorphic for the Arrowhead arrangement, with small percentages of Pikes Peak and Chiricahua also found. The current samples show these populations to contain eight third chromosome arrangements; seven previously described (AR, PP, CH, ST, TL, OL, EP) and a newly discovered endemic arrangement (American Fork, AF), with breakpoints 63E and 70D. The frequency of AR had decreased to 25% in …

Bionomics Of A Subterranean Gall Midge (Diptera : Cecidomyiidae) From Artemisia Ludoviciana, Ranasinghe

Theses and Dissertations

Bionomics of a gall midge that emerged from nodulelike structures of herbaceous sage, Artemisia ludoviciana Nutt., was studied as a part of a larger investigation on possible nitrogen fixation by this plant. Infested plants collected from the field were regularly examined in the laboratory where some of them were grown in a liquid nutrient medium. In the laboratory, adult midges were reared from the pupae and induction of infestation was attempted. Apparent nodulation on these plants is caused by the subterranean bud galls of a previously unknown gall midge species, Rhopalomyia subhumilis Gagne. The life history of this midge is …

Geographical Variation In Nesting Biology And Social Organization Of Halictus Ligatus, Charles D. Michener, Fred D. Bennett

Mi

No abstract provided.