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Articles 961 - 990 of 1578
Full-Text Articles in Entomology
The Pest Status Of Yellowjackets In Ohio (Hymenoptera: Vespidae), Kenneth J. Stein, Dana L. Wrensch
The Pest Status Of Yellowjackets In Ohio (Hymenoptera: Vespidae), Kenneth J. Stein, Dana L. Wrensch
The Great Lakes Entomologist
Since 1975 in Ohio, there has been an escalation in the number of complaints and inquiries regarding yellowjackets (Vespula and Dolichovespula spp.) to the Ohio pest control operators, the Ohio Cooperative Extension Service (OCES) County Agents and the OCES Entomologists at the Ohio State University. A survey was distributed in May 1985 to both groups in order to determine the pest status of yellowjackets in Ohio. The results of this survey strongly suggest that yelIowjackets in Ohio are largely an "economic pest", with most economic disturbances associated with homeowners, outdoor businesses, and outdoor recreational facilities.
Records Of Ampulicidae In Michigan (Hymenoptera: Sphecoidea), Mark F. O'Brien
Records Of Ampulicidae In Michigan (Hymenoptera: Sphecoidea), Mark F. O'Brien
The Great Lakes Entomologist
Two species of Ampulicidae, Dolichurus greenei and Ampulex canaliculata, are reported from Michigan for the first time.
New Host Records And Developmental Notes On The Pear Slug Caliroa Cerasi (Hymenoptera: Tenthredinidae), Feeding On Cotoneaster And Chaenomeles Species., Kenneth F. Raffa, Gregory L. Lintereur
New Host Records And Developmental Notes On The Pear Slug Caliroa Cerasi (Hymenoptera: Tenthredinidae), Feeding On Cotoneaster And Chaenomeles Species., Kenneth F. Raffa, Gregory L. Lintereur
The Great Lakes Entomologist
The pear slug. Caliroa cerasi was collected and reared to adulthood on flowering quince and three species of Cotoneaster. This is the first record of C. cerasi attacking any member of the genus Chaenomeles and the first confirmation of feeding on Cotoneaster in North America. Adult emergence, oviposition, and larval development were evaluated under both laboratory and field conditions. Females lay an average of 48 eggs, with about two-thirds of the oviposition occurring during their first 24 hours. A method for monitoring adult emergence in the field was developed.
Seasonal Occurrence Of Pine Root Collar Weevil, Hylobius Radicis (Coleoptera: Curculionidae), In Red Pine Stands Undergoing Decline, Kenneth F. Raffa, David J. Hall
Seasonal Occurrence Of Pine Root Collar Weevil, Hylobius Radicis (Coleoptera: Curculionidae), In Red Pine Stands Undergoing Decline, Kenneth F. Raffa, David J. Hall
The Great Lakes Entomologist
A trapping scheme was devised for sampling the pine root collar weevil, Hylobius radicis, in mature red pine plantations in Wisconsin. Adult weevils were trapped throughout the 1986 field season, and the method appears sensitive enough to discern temporal and spatial trends. The number of weevils caught was higher in stands symptomatic of the general condition currently labelled Red Pine Decline and Mortality. In some stands there was a strong tendency for trap catches to be particularly high near certain trees. Seasonal trends and sex ratios were compared with published reports of H. radicis activity in Michigan.
Field Monitoring Of X-Disease Leafhopper Vectors (Homoptera: Cicadellidae) And Infected Chokecherry In Michigan Peach And Cherry Orchards, Kirk J. Larsen, Mark E. Whalon
Field Monitoring Of X-Disease Leafhopper Vectors (Homoptera: Cicadellidae) And Infected Chokecherry In Michigan Peach And Cherry Orchards, Kirk J. Larsen, Mark E. Whalon
The Great Lakes Entomologist
Populations of leafhopper vectors of X-disease, a major disease problem of the Michigan peach industry, were monitored by yellow sticky board traps and sweepnet samples during 1985 and 1986. Abundance of known leafhopper vectors varied throughout the stone fruit belt of Michigan, with Paraphlepsius irroratus common in the southwest Lower Peninsula, but representing 73.1 % of all known vectors found. Other commonly found vectors included Scaphytopius acutus (22%), Colladonus clitellarius (1.5'k). and Norvellina seminuda (3.4%). Yellow sticky boards were the best monitoring method used. accounting for 90.3% of all vectors captured. The appearance of X-disease symptoms on chokecherry throughout the …
Annotated List Of Crane Flies (Diptera: Tipulidae) From Mentor Marsh, Lake County, Ohio, Michael J. Bolton
Annotated List Of Crane Flies (Diptera: Tipulidae) From Mentor Marsh, Lake County, Ohio, Michael J. Bolton
The Great Lakes Entomologist
Sixty-one species of Tipulidae, one species of Ptychopteridae, two species of Trichoceridae, and one species of Anisopodidae are recorded for Mentor Marsh and adjacent woodlands.
Insecticide And Growth Regulator Effects On The Leafminer, Liriomyza Trifolii (Diptera: Agromyzidae), In Celery And Observations On Parasitism, E. Grafius, J. Hayden
Insecticide And Growth Regulator Effects On The Leafminer, Liriomyza Trifolii (Diptera: Agromyzidae), In Celery And Observations On Parasitism, E. Grafius, J. Hayden
The Great Lakes Entomologist
The effects of different insecticides were compared on survival and development of the leafminer, L. trifolii, in celery in Michigan and parasitism was assessed in this non- resident population. Avermectin, thiocyclam, and cyromazine effectively controlled L. trifolii larvae or prevented successful emergence as adults. Moderate to high levels of resistance to permethrin and chlorpyrifos were present. Avermectin caused high mortality of all larval stages and no adults successfully emerged. Thiocyclam caused high mortality to all larval stages, but did not affect adult emergence from the surviving larvae. Cyromazine acted most strongly against early stage larvae before visible mines were …
Ectoparasites And Other Arthropod Associates Of Some Voles And Shrews From The Catskill Mountains Of New York, John O. Whitaker Jr., Thomas W. French
Ectoparasites And Other Arthropod Associates Of Some Voles And Shrews From The Catskill Mountains Of New York, John O. Whitaker Jr., Thomas W. French
The Great Lakes Entomologist
Reported here from the Catskill Mountains of New York are 30 ectoparasites and other associates from 39 smoky shrews, Sorex fumeus, 17 from 11 masked shrews, Sorex cinereus, 11 from eight long-tailed shrews, Sorex dispar, and 31 from 44 rock voles, Microtus chrotorrhinus.
Ectoparasites And Other Arthropod Associates Of The Hairy-Tailed Mole, Parascalops Breweri, John O. Whitaker Jr, Thomas W. French
Ectoparasites And Other Arthropod Associates Of The Hairy-Tailed Mole, Parascalops Breweri, John O. Whitaker Jr, Thomas W. French
The Great Lakes Entomologist
A total of 33 taxa of ectoparasites and other associates was taken on seven individuals of the Hairy-tailed Mole, Parascalops breweri, from New York and New England. The most abundant form was the glycyphagid mite, Labidophorus nearcticus.
Movement, Dispersion, And Orientation Of A Population Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), In Eggplant, Charles E. Williams
Movement, Dispersion, And Orientation Of A Population Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), In Eggplant, Charles E. Williams
The Great Lakes Entomologist
Short-term dispersal, dispersion, and orientation of a population of the Colorado potato beetle, Leptinotarsa decemlineata. were examined in a uniformly spaced planting of eggplant using a mark-recapture technique. Recaptures of marked beetles declined throughout the study, the greatest decline occurring 24 h after release. Dispersal of remaining beetles through the field was gradual; beetle numbers declined with distance from the release point during the first 3 days of the study and increased with distance thereafter. Beetles were highly aggregated for 3-4 days after release but were well dispersed for the remainder of the study. Dispersal of aggregated beetles may …
Bibliographic Guide To The Terrestrial Arthropods Of Michigan: Supplement 1, Mark F. O'Brien
Bibliographic Guide To The Terrestrial Arthropods Of Michigan: Supplement 1, Mark F. O'Brien
The Great Lakes Entomologist
A list of publications dealing with faunistic studies, range extensions, systematics, and identification of the terrestrial arthropods of Michigan is presented, primarily for the period of 1983-1987. Correlation is also made between earlier entomological activities and resulting publications on the fauna of the state.
Life History Of Mesovelia Mulsanti (Hemiptera: Mesoveliidae) In Southern Illinois, J. E. Mcpherson
Life History Of Mesovelia Mulsanti (Hemiptera: Mesoveliidae) In Southern Illinois, J. E. Mcpherson
The Great Lakes Entomologist
The life history of Mesovelia mulsanti was studied during 1983-1986. This species was apparently trivoltine with a partial 4th generation at the end of the year. It overwintered as eggs. First ins tars appeared in mid-April followed by marked overlapping of the subsequent instars and generations. The first adults appeared in early May. No active individuals were found after November.
Revisionary Notes On Predaceous Heptageniidae Based On Larval And Adult Associations (Ephemeroptera), W. P. Mccafferty, A. V. Provonsha
Revisionary Notes On Predaceous Heptageniidae Based On Larval And Adult Associations (Ephemeroptera), W. P. Mccafferty, A. V. Provonsha
The Great Lakes Entomologist
New data indicate that larvae previously described as Spinadis Edmunds and Jensen and Spinadis wallacei Edmunds and Jensen are the larval stage of the prior named adults of Anepeorus simplex (Walsh) and are therefore synonymized. It is highly probable that larvae described as Acanthomola pubescens Whiting and Lehmkuhl represent the larval stage of Anepeorus rusticus McDunnough, but they remain to be reared. Anepeorus sensu novum and Pseudiron are placed in the subfamily Anepeorinae, and Raptoheptagenia (= recently associated Heptagenia cruentata Walsh adults and larvae previously thought to be Anepeorus) is placed in the subfamily Heptageniinae.
Seasonal Correction Factors For The Biotic Index, William L. Hilsenhoff
Seasonal Correction Factors For The Biotic Index, William L. Hilsenhoff
The Great Lakes Entomologist
For evaluation of streams with the biotic index (BI), samples of arthropods should be collected in the spring before degree day accumulations of mean air temperatures above 4.5°C reach 440° in warm-water streams, and before they reach 1050° in cold-water streams that remain below 20°e. Sampling in the fall may be resumed 60 days after the 440 degree day accumulation in warm-water streams and 45 days after the 1050 degree day accumulation in cold-water streams. Stream temperature had no effect on the BI, except as it affected seasonal differences. Current had less effect on the BI than anticipated, but currents …
Observations Of The Gallery Habits Of Trypodendron Retusum (Coleoptera: Scolytidae) Infesting Aspen In Central Michigan, Steven D. Brewer, Robert A. Beck, Richard A. Roeper
Observations Of The Gallery Habits Of Trypodendron Retusum (Coleoptera: Scolytidae) Infesting Aspen In Central Michigan, Steven D. Brewer, Robert A. Beck, Richard A. Roeper
The Great Lakes Entomologist
A monogamous pair of adult Trypodendron retusum construct a gallery system consisting of an entrance tunnel and from two to five lateral tunnels into the sapwood of aspen. Inoculation of the mutualistic fungus Ambrosiella ferruginea by the female beetle, was followed by oviposition in shallow egg cradles. Two instars were observed as the larvae enlarged their cradles. The number of cradles per gallery system was correlated to the length of the gallery system. Progeny adults with a sex ratio of approximately 1:1 emerged from late June to early August to overwinter in the litter.
Review Of Adaptations Of Velvet Ants (Hymenoptera: Mutillidae), Mark Deyrup
Review Of Adaptations Of Velvet Ants (Hymenoptera: Mutillidae), Mark Deyrup
The Great Lakes Entomologist
Mutillid wasps are active and conspicuous insects, but their interactions with each other and with other animals are seldom observed. Mostly indirect evidence is used to postulate that an array of traits represents adaptations to exploit ground-nesting, aggressive, often highly dispersed hosts. The massive exoskeleton protects the parasitoid invading nests of biting and stinging hosts; certain unrelated parasitoids attacking the same hosts are similarly armored. Female aptery occurs in mutillids and in many other wasps attacking soil-dwelling hosts. In at least two mutillid lineages, female aptery apparently led to phoretic copulation, which led in turn to selection for large size …
A Procedure For Sampling Nymphs Of Saratoga Spittlebug, Aphrophora Saratogensis (Homoptera: Cercopidae), Using Percentage Of Sample-Units Infested, Louis F. Wilson, Sharon L. Hobrla
A Procedure For Sampling Nymphs Of Saratoga Spittlebug, Aphrophora Saratogensis (Homoptera: Cercopidae), Using Percentage Of Sample-Units Infested, Louis F. Wilson, Sharon L. Hobrla
The Great Lakes Entomologist
A method is proposed for rapidly estimating the nymphal population of the Saratoga spittlebug on alternate host plants in young red pine plantations. The method is based on an assumption that the number of nymphs per sample unit is distributed within an infested plantation according to the negative binomial distribution. This method can be 1.1-11.0 times more efficient depending upon the density of plants and the nymphal population level.
Life History And Laboratory Rearing Of Gerris Argenticollis (Hemiptera: Gerridae) With Descriptions Of Immature Stages, Peter P. Korch Iii, J. E. Mcpherson
Life History And Laboratory Rearing Of Gerris Argenticollis (Hemiptera: Gerridae) With Descriptions Of Immature Stages, Peter P. Korch Iii, J. E. Mcpherson
The Great Lakes Entomologist
The life history of Gerris argenticollis was investigated in Jackson County, Illinois, March-June 1986, and the immature stages were described. The water strider also was reared from egg to adult under laboratory conditions. This univoltine species overwintered as adults that became active in early March, appearing on a temporary woodland pond after the air temperature exceeded 12°C. Seasonal occurrence of the adults and immatures is discussed. Adults were last observed in mid-June. Feeding records are given. G. argenticollis was reared on Drosophila melanogaster adults under a 10L: 14D photoperiod (ca. 2800 lux) at ca. 21°C. The incubation period averaged 12.5 …
Exploitation Of Eggs Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), By The Exotic Egg Parasitoid Edovum Puttleri (Hymenoptera: Eulophidae) In Eggplant, Charles E. Williams
Exploitation Of Eggs Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), By The Exotic Egg Parasitoid Edovum Puttleri (Hymenoptera: Eulophidae) In Eggplant, Charles E. Williams
The Great Lakes Entomologist
Edovum puttleri is a newly discovered, exotic, egg parasitoid of the Colorado potato beetle, (CPB) Leptinotarsa decemlineata. The exploitation of CPB eggs by E. puttleri was examined in a New Jersey eggplant field. E. puttleri parasitized 46.8% of the CPB eggs present in the field. Exploitation of eggs within eggmasses was high; 73.9% of CPB eggs in eggmasses attacked by E. puttleri were parasitized.
Influence Of Temperature On Egg Production In Sunflower Stem Weevil Cylindrocopturus Adspersus (Coleoptera: Cucurlionidae), John F. Barker
Influence Of Temperature On Egg Production In Sunflower Stem Weevil Cylindrocopturus Adspersus (Coleoptera: Cucurlionidae), John F. Barker
The Great Lakes Entomologist
Controlled laboratory experiments were conducted to study the influence of temperature on production of eggs by a sunflower stem weevil Cylindrocopturus adspersus. Maximum egg production occurred when the temperature was 30± 1°C. At 27C the rate of egg production was lower than at 30°C but significant only at the P < 0.1 level. At 20, 23. and 35C egg production was significantly lower than at 30°C (P < 0.05) indicating that temperature can be an important factor in regulating the fecundity of this species.
Observations Of The Habits Of Corthylus Punctatissimus (Coleoptera: Scolytidae) Infesting Maple Saplings In Central Michigan, Richard A. Roeper, Brian J. Palik, Demetrios V. Zestos, Patrick G. Hesch, Celia Duke Larsen
Observations Of The Habits Of Corthylus Punctatissimus (Coleoptera: Scolytidae) Infesting Maple Saplings In Central Michigan, Richard A. Roeper, Brian J. Palik, Demetrios V. Zestos, Patrick G. Hesch, Celia Duke Larsen
The Great Lakes Entomologist
Corthylus punctatissimus, the pitted ambrosia beetle, infested and killed maple saplings that were 3-12 years of age with a basal diameter of 4-14 mm. The habits of the parental pair of adults are described. The beetles construct a spiral gallery system with about five egg niches per host. Half the brood reaches adult stage during the summer with a sex ratio of 1:1. No relationship was found between the number of niches, length of gallery system, or diameter of stem.
Bibliography Of Sequential Sampling Plans In Insect Pest Management Based On Wald's Sequential Probability Ratio Test, Gary W. Fowler, Ann M. Lynch
Bibliography Of Sequential Sampling Plans In Insect Pest Management Based On Wald's Sequential Probability Ratio Test, Gary W. Fowler, Ann M. Lynch
The Great Lakes Entomologist
This paper contains 65 references dealing with the development of sequential sampling plans in insect pest management based on Wald's Sequential Probability Ratio Test (SPRT), 25 in forest entomology and 40 in agriculture entomology. The insect(s) sampled, whether the decision procedure was based on one or two SPRTs, and the mathematical distribution and probabilities of Type I and Type II errors used to develop the SPRTs are also given for each sequential sampling plan.
Regression Equations And Table For Estimating Numbers Of Eggs In Spruce Budworm (Lepidoptera: Tortricidae) Egg Masses In Michigan, Gary W. Fowler, Bruce A. Montgomery, Gary A. Simmons
Regression Equations And Table For Estimating Numbers Of Eggs In Spruce Budworm (Lepidoptera: Tortricidae) Egg Masses In Michigan, Gary W. Fowler, Bruce A. Montgomery, Gary A. Simmons
The Great Lakes Entomologist
Three simple linear regression equations were developed to estimate the numbers of eggs in spruce budworm, Choristoneura fumiferana, egg masses in Michigan. One equation was developed for each of 2-row, 2- row + , and 3-row egg masses. A table of estimated numbers of eggs per egg mass is given for each of the three row types for egg mass lengths from 1 to 13 mm.
Bacteria As Ovipositional Attractants For Culex Pipiens (Diptera: Culicidae), C. Lee Rockett
Bacteria As Ovipositional Attractants For Culex Pipiens (Diptera: Culicidae), C. Lee Rockett
The Great Lakes Entomologist
(excerpt)
The study of factors and mechanisms involving ovipositional attractants in mosquitoes is still a relatively new area of research. Some early workers in mosquito biology suggested that gravid mosquitoes simply scattered their eggs indiscriminately on available aquatic sites; however, numerous field studies have failed to provide any real evidence for indiscriminate oviposition. The current idea is that oviposition involves not only locating an aquatic site, but the selection of an environment containing the necessary physical, chemical, and biotic factors required for larval development. It is desirable for female mosquitoes to be able to detect a breeding site that can …
Regression Equations And Table For Estimating Numbers Of Eggs In Jack Pine Budworm (Lepidoptera: Tortricidae) Egg Masses In Michigan, Gary W. Fowler, Gary A. Simmons
Regression Equations And Table For Estimating Numbers Of Eggs In Jack Pine Budworm (Lepidoptera: Tortricidae) Egg Masses In Michigan, Gary W. Fowler, Gary A. Simmons
The Great Lakes Entomologist
Three simple linear regression equations were developed to estimate the numbers of eggs in jack pine budworm, Choristoneura pinus pinus, egg masses in Michigan. One equation was developed for each of 2-row, 2-row +, and 3-row egg masses. A table of estimated numbers of eggs per egg mass is given for each of the three row types for egg mass lengths from 1 to 25 nun.
Head Capsule Widths As An Indicator Of The Larval Instar Of Codling Moth (Lepidoptera: Olethreutidae), Peter Weitzner, Mark E. Whalon
Head Capsule Widths As An Indicator Of The Larval Instar Of Codling Moth (Lepidoptera: Olethreutidae), Peter Weitzner, Mark E. Whalon
The Great Lakes Entomologist
Head capsule width was a reliable indicator of larval instar in a strain of Michigan codling moths, Cydia pomonella. Head capsules were 0.33, 0.50, 0.82, 1.18 and 1.55 mm in width from first to fifth instar respectively. Development as measured by days and degree days was much more variable than head capsule width in estimating larval instars.
Parasites Recovered From Overwintering Mimosa Webworm, Homadaula Anisocentra (Lepidoptera: Plutellidae), F. D. Miller, T. Cheetham, R. A. Bastian, E. R. Hart
Parasites Recovered From Overwintering Mimosa Webworm, Homadaula Anisocentra (Lepidoptera: Plutellidae), F. D. Miller, T. Cheetham, R. A. Bastian, E. R. Hart
The Great Lakes Entomologist
The mimosa webworm, Homadaula anisocentra, overwinters in the pupal stage. Two parasites, Parania geniculata and Elasmus albizziae, are associated with overwintering pupae or the immediate prepupal larvae. Combined parasitism during the winters of 1981-82,1982-83, and 1983-84 was 2.1,3.9, and 2.9%, respectively.
New Host Records Of Parasitic Hymenoptera In Clearwing Moths (Lepidoptera: Sesiidae), Foster Forbes Purrington, David G. Nielsen
New Host Records Of Parasitic Hymenoptera In Clearwing Moths (Lepidoptera: Sesiidae), Foster Forbes Purrington, David G. Nielsen
The Great Lakes Entomologist
Synanthedon pictipes is host for Dibrachus cavus; Podosesia aureocincta hosts Phaeogenes ater, Macrocentrus marginator, and
Lissonota sp.; Podosesia syringae hosts Lissonota sp.
Habitats And Spider Prey Of Dipogon Sayi Sayi (Hymenoptera: Pompilidae) In Washington County, Maine, Daniel T. Jennings, Frank D. Parker
Habitats And Spider Prey Of Dipogon Sayi Sayi (Hymenoptera: Pompilidae) In Washington County, Maine, Daniel T. Jennings, Frank D. Parker
The Great Lakes Entomologist
Spider wasps were reared from three types of trap-nests deployed in strip-clearcut areas of a spruce-fir-mixed hardwood forest of Maine. Collections of Dipogon sayi sayi from Mooseborn National Wildlife Refuge, Washington County, represent the easternmost records for the United States. Spider prey included females of Misumena vatia, Xysticus emertoni (new prey record), and X. punctatus, and juveniles and penultimate males of Xysticus sp. We found no evidence of nest-site competition between spider wasps and eumenid wasps (Hymenoptera: Eumenidae) that prey on spruce budwornl, Choristoneura fumiferana, when available nesting sites ranged from 320 to 4400,
Spruce Budworm And Other Lepidopterous Prey Of Eumenid Wasps (Hymenoptera: Eumenidae) In Spruce-Fir Forests Of Maine, Judith A. Collins, Daniel T. Jennings
Spruce Budworm And Other Lepidopterous Prey Of Eumenid Wasps (Hymenoptera: Eumenidae) In Spruce-Fir Forests Of Maine, Judith A. Collins, Daniel T. Jennings
The Great Lakes Entomologist
Three species of eumenid wasps, Ancistrocerus adiabatus, Ancistrocerus antilope, and Euodynerus Ieucomelas, accepted and provisioned trap-nesting blocks with lepidopterous larvae, A pyralid. Nephopteryx sp., was the most commonly provisioned prey. A. adiabarus and E. leucomelas preyed on late instars of the spruce budworm, Choristoneura fumiferana: however. budworms accounted for only 6% of the provisioned prey. Estimates of budworm population densities before and after wasp predation, and subsample-s of provisioned prey indicated no significant reductions i = 0.065%) in budworm populations attributable to trap-nesting wasps.