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Articles 1141 - 1170 of 1578
Full-Text Articles in Entomology
Field Evaluation Of Trap Components For The Introduced Pine Sawfly, Diprion Similis (Hymenoptera: Diprionidae), H. A. Thomas
Field Evaluation Of Trap Components For The Introduced Pine Sawfly, Diprion Similis (Hymenoptera: Diprionidae), H. A. Thomas
The Great Lakes Entomologist
Three sizes of the Conrel Delta trap, a yellow cardboard tube trap, and the Pherocon II standard trap generally used in detection surveys were evaluated. Tests were run for 41 days in the summer of 1980 and 35 days in the spring of 1981. The lure in all traps was the standard 38-cm cotton dental roll charged with 10 female equivalents of crude virgin female pheromone extract. In 1980, all test traps outperformed the standard Pherocon II model. In 1981, the Pherocon II traps captured more males than any of the others. The catch in the Delta traps appeared to …
Description Of The Fifth Instar Of Epiptera Opaca (Homoptera: Fulgoroidea: Achilidae), Stephen W. Wilson
Description Of The Fifth Instar Of Epiptera Opaca (Homoptera: Fulgoroidea: Achilidae), Stephen W. Wilson
The Great Lakes Entomologist
(excerpt)
Epiptera opaca (Say) ranges from Quebec south to Georgia and west to Ontario and Mississippi; it has also been recorded from British Columbia (Beirne 1950, Wilson and McPherson 1980). This achilid has been associated with pines (Hepburn 1967); otherwise no information on the biology of this species is available. Based on observations of E. fusca (Walker), Hepburn (1967) noted that the immature stages of all species of Epiptera probably live beneath the loose bark of dead trees, presumably feeding on fungal hyphae.
Determining The Cost Of An Ipm Scouting Program, Grayson C. Brown
Determining The Cost Of An Ipm Scouting Program, Grayson C. Brown
The Great Lakes Entomologist
A simple model of an integrated pest management (IPM) program is presented. The model incorporates most common sources of income and expenditure encountered by scouting programs. It has been validated in the 30-county Kentucky IPM program using county- specific parameters and agrees very well with current pricing policies in those counties. This indicates that it should be a reliable indicator of future policies as labor and fuel costs rise. Other applications of the model are discussed.
Technology Transfer In Forest Pest Management: A Case History, John A. Witter, Gary A. Simmons, Bruce A. Montgomery, Randall G. Rogan
Technology Transfer In Forest Pest Management: A Case History, John A. Witter, Gary A. Simmons, Bruce A. Montgomery, Randall G. Rogan
The Great Lakes Entomologist
The current approach being used in the spruce budworm technology transfer program for the Lake States is described. During 1981-1982, we concentrated on needs assessment surveys and the development and packaging of materials in five areas: general manual, chemical control handbook, silviculture handbook, instruction manual for remote sensing workshops, and technical reports on budworm impact on spruce-fir stands. We present a list of factors that researchers and technology transfer specialists should consider when plan- ning a research and technology transfer program in forest pest management.
Spruce Budworm Egg Mass Density On Balsam Fir And White Spruce: Low Population Levels (Lepidoptera: Tortricidae), Gary A. Simmons, Gary W. Fowler
Spruce Budworm Egg Mass Density On Balsam Fir And White Spruce: Low Population Levels (Lepidoptera: Tortricidae), Gary A. Simmons, Gary W. Fowler
The Great Lakes Entomologist
As part of a study to develop improved foliage sampling methods for spruce budworm, Choristoneura fumiferana (Clemens), egg masses, two balsam fir (four in one stand), Abies balsamea, and two white spruce, Picea glauca, trees were chosen from each of five spruce- fir stands in Michigan's Upper Peninsula in 1980. All stands had very low to low population densities. Each tree was completely enumerated so that the number of new egg masses, foliage surface area, and egg mass density could be determined for the entire tree, three crown classes, four quadrants, and the tree top. Results indicated (1) considerable tree-to- …
Spruce Budworm Egg Mass Density On Balsam Fir: Low To Extreme Population Levels (Lepidoptera: Tortricidae), Gary W. Fowler, Gary A. Simmons
Spruce Budworm Egg Mass Density On Balsam Fir: Low To Extreme Population Levels (Lepidoptera: Tortricidae), Gary W. Fowler, Gary A. Simmons
The Great Lakes Entomologist
A study was initiated in Michigan's Upper Peninsula to develop improved foliage sampling methods for spruce budworm, Choristoneura fumiferana (Clemens), egg masses. Four balsam fir, Abies balsamea, trees were chosen from each of four stands in 1979, and four balsam fir trees were chosen from one stand in 1980. The number of new egg masses, foliage surface area, and crown and quadrant classes of each branch were determined for all trees. Egg mass density for each part of the tree was determined by dividing total number of egg masses by total surfaee area. The 20 trees were divided into five …
Ethology And Overwintering Of Podalonia Luctuosa (Hymenoptera: Sphecidae), Mark F. O'Brien, Frank E. Kurczewski
Ethology And Overwintering Of Podalonia Luctuosa (Hymenoptera: Sphecidae), Mark F. O'Brien, Frank E. Kurczewski
The Great Lakes Entomologist
The nesting and overwintering behavior of Podalonia luctuosa (Smith) was studied in New York and Colorado. Females provisioned shallow (ca. 2 cm deep), unicellular nests with a single cutworm (Noctuidae) during April, May, and July. Paralyzed prey were trans- ported on the ground and were cached on plants just above ground level. Prey weights averaged about 400 mg. The miltogrammine fly Hilarella hilarella Zetterstedt parasitized prey at both localities. From I to IO adult females were found to overwinter in burrows 0.5 m deep, which were dug in late summer and early fall. Collection data and field studies indicated that …
Seasonal Emergence Patterns Of Black Flies (Diptera: Simuliidae) In Northwestern Pennsylvania, P. H. Adler, B. L. Travis, K. C. Kim, E. C. Masteller
Seasonal Emergence Patterns Of Black Flies (Diptera: Simuliidae) In Northwestern Pennsylvania, P. H. Adler, B. L. Travis, K. C. Kim, E. C. Masteller
The Great Lakes Entomologist
A two-year emergence trap study of black flies at four sites in northwestern Pennsylvania yielded 1%3 individuals of nine species. The collections included Prosimulium mixtum, P. jU5cum, Stegapterna mutata, Simulium aureum, S. excisum (recorded for the first time from Pennsylvania), S. gauldingi, S. sp. nr. innacens, S. vittatum, and S. tuberasum. Species richness for all sites peaked during May. Emergence collections below a sewage plant effluent outfall represented fewer individuals and species than collections above the effluent outfall. Chromosomal analysis of supplementary larval collections revealed the IIIL-l and IS-7 sibling species of S. vittatum and the FG sibling of S. …
The Influence Of Plant Dispersion On Movement Patterns Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), Catherine E. Bach
The Influence Of Plant Dispersion On Movement Patterns Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), Catherine E. Bach
The Great Lakes Entomologist
The influence of plant dispersion on movements of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), was studied with mark-recapture techniques. Beetles released between potato monocultures, polycultures with two additional non-host plant species, and polycultures with five additional non-host species, randomly colonized the three types of plots. Releases between different arrangements of potted host and non-host plants showed (1) greater beetle colonization and greater length of time spent on potato plants growing alone than on potato plants surrounded by non-host vegetation, and (2) no effect of potato plant density on colonization or tenure time. Overall, there was a 65~ …
A Split-Stem Lesion On Young Hybrid Populus Trees Caused By The Tarnished Plant Bug, Lygus Lineolaris (Hemiptera: [Heteroptera]: Miridae), Frank J. Sapio, Louis F. Wilson, Michael E. Ostry
A Split-Stem Lesion On Young Hybrid Populus Trees Caused By The Tarnished Plant Bug, Lygus Lineolaris (Hemiptera: [Heteroptera]: Miridae), Frank J. Sapio, Louis F. Wilson, Michael E. Ostry
The Great Lakes Entomologist
The tarnished plant bug, known principally as an agricultural pest, injures young hybrid Populus by feeding on the stems and meristems. Tarnished plant bug eggs, fungi associated with some lesions, and simple mechanical stimuli alone from feeding appeared not to cause lesion formation. Of 20 Populus hybrids tested in a clonal trial, four appeared to be consistently susceptible to lesion injury, with Populus nigra var. betulifolia x trichocarpa the most susceptible. Several clones showed high resistance in the trial but a few were susceptible in other plantings and in host preference tests when caged with tarnished plant bugs. Lesions diminished …
Descriptions Of Nymphal Instars Of Thyanta Calceata (Hemiptera: Pentatomidae), S. M. Paskewitz, J. E. Mcpherson
Descriptions Of Nymphal Instars Of Thyanta Calceata (Hemiptera: Pentatomidae), S. M. Paskewitz, J. E. Mcpherson
The Great Lakes Entomologist
The external anatomy of each of the five nymphal instars of Thyanta calceata is de- scribed.
A New Species Of Nixe From Indiana (Ephemeroptera: Heptageniidae), W. P. Mccafferty
A New Species Of Nixe From Indiana (Ephemeroptera: Heptageniidae), W. P. Mccafferty
The Great Lakes Entomologist
Nixe flowersi n. sp. is described for Indiana heptageniid mayflies that had previously been misidentified as Heptagenia persimplex McDunnough .
The Pentatomoidea (Hemiptera) Of Northeastern North America With Emphasis On The Fauna Of Illinois. J. E. Mcpherson. 240 Pages. Southern Illinois University Press, Carbondale, 1982. $30.00., A. G. Wheeler Jr.
The Great Lakes Entomologist
(excerpt)
Among the most conspicuous of the true bugs are the pentatomoid Hemiptera, stink bugs and their relatives, many of which are large, or moderately so, and brightly colored. Unwary berry pickers probably can recount an unpleasant experience with fruit tainted by the noisome odor of a stink bug, and the characteristic, barrel-shaped eggs of most Pentatomidae, often ornate and arranged in neat rows, have evoked the wonderment of naturalists and prompted numerous technical descriptions from entomologists. Contributing to the importance of this group are the crop losses inflicted by certain plant-feeding species and the destruction of insect pests by …
First Report Of The Leafhopper Graminella Fitchii For Michigan (Homoptera: Cicadellidae), Oscar Taboada
First Report Of The Leafhopper Graminella Fitchii For Michigan (Homoptera: Cicadellidae), Oscar Taboada
The Great Lakes Entomologist
(excerpt)
While working on a leafhopper project I came across four specimens of Graminella fitchii (Van Duzee) in the Entomology Museum, Department of Entomology, Michigan State Uni- versity, and five specimens in the Museum of Zoology, The University of Michigan.
Description Of A New Species Of Paradamoetas (Araneae: Salticidae), With A Revised Key To The Genus, Bruce Cutler
Description Of A New Species Of Paradamoetas (Araneae: Salticidae), With A Revised Key To The Genus, Bruce Cutler
The Great Lakes Entomologist
Paradamoetas changuinola new species, is described. The range of this antlike genus of jumping spiders is extended south to Panama. A revised key to the four specics currently recognized is presented.
New Records For Ectoparasites Of Michigan Bats, S. B. Dood, A. Kurta
New Records For Ectoparasites Of Michigan Bats, S. B. Dood, A. Kurta
The Great Lakes Entomologist
During 1978, 1979, and 1981 ectoparasites of bats were collected in 16 counties of the Upper and Lower peninsulas in connection with an extensive study of Michigan bat populations (Kurta 1980, 1982). The two insect and five acarine species recovered include four new records for Michigan and two new host records for the United States. All are listed with comments on past records of Michigan bat ectoparasites.
Diurnal And Seasonal Activity Of Female Mutillids On A Michigan Sand Flat (Hymenoptera: Mutillidae), David A. Evans
Diurnal And Seasonal Activity Of Female Mutillids On A Michigan Sand Flat (Hymenoptera: Mutillidae), David A. Evans
The Great Lakes Entomologist
Diurnal activity of mutillid females of a southwestern Michigan sand area was characterized in relation to sand surface temperature conditions. Seasonal abundance patterns weredetermined for four Dasymutilla species.
Susceptibility Of White Spruce Seed Sources To Yellowheaded Spruce Sawfly, Pikonema Alaskensis,(Hymenoptera: Tenthredinidae), Michael D. Connor, Mark W. Houseweart, Herbert M. Kulman
Susceptibility Of White Spruce Seed Sources To Yellowheaded Spruce Sawfly, Pikonema Alaskensis,(Hymenoptera: Tenthredinidae), Michael D. Connor, Mark W. Houseweart, Herbert M. Kulman
The Great Lakes Entomologist
A field caging technique was used to test the susceptibility of 25 white spruce, Picea glauca (Moench) Voss, seed sources to attack by Pikonema alaskensis (Rohwer). No sig- nificant differences were found in the number of eggs laid, number of dessicated eggs, or number of egg slits. Percent oviposition differed significantly within a tree, the south side having more eggs. Bud size differed significantly within trees and between trees but not between seed sources. The number of sawfly eggs laid on a bud could not be related to bud size. There was no significant difference in susceptibility of the seed …
Notes On Shifting Distribution Patterns And Survival Of Immature Danaus Plexippus (Lepidoptera: Danaidae) On The Food Plant Asclepias Syriaca, Susan Sullivan Borkin
Notes On Shifting Distribution Patterns And Survival Of Immature Danaus Plexippus (Lepidoptera: Danaidae) On The Food Plant Asclepias Syriaca, Susan Sullivan Borkin
The Great Lakes Entomologist
Abundance and distribution of immature stages of the monarch butterfly, Danaus plexippus, on the food plant Asclepias syriaca were examined at a site in southeastern Wisconsin over one growing season. Estimated mortality for eggs and larvae was substantial (88%). Dispersal of larvae between individual food plants, along with egg and larval mortality factors, may result in low population density. Although the mechanism triggering larval dispersal is unknown, several alternative hypotheses are proposed for further examination.
Gypsy Moth (Lepidoptera: Lymantriidae): History Of Eradication Efforts In Michigan, 1954-1981, Murray Hanna
Gypsy Moth (Lepidoptera: Lymantriidae): History Of Eradication Efforts In Michigan, 1954-1981, Murray Hanna
The Great Lakes Entomologist
Gypsy moth, Lymantria dispar, was first discovered in Michigan in 1954, Aerial spraying operations were conducted to eradicate gypsy moth infestations with synthetic insecticides (DDT, carbaryl, and diflubenzuron),
Biological Characteristics That Make The Lesser Peachtree Borer (Lepidoptera: Sesiidae) A Pest On Peach Trees, R. H. Meyer
Biological Characteristics That Make The Lesser Peachtree Borer (Lepidoptera: Sesiidae) A Pest On Peach Trees, R. H. Meyer
The Great Lakes Entomologist
The lesser peachtree borer, Synanthedon pictipes, is a native insect with well distributed hosts near peach orchards, which has high mobility between sylvatic and domestic hosts. It is able to take advantage of the susceptibility of the peach tree to periodic freeze injury and disease cankers. The moth stage is present through most of the growing season and effectively conceals the eggs singly at the most favorable sites for larval success.
Adult Female Spruce Bedworm, Choristoneura Fumiferana (Lepidoptera: Tortricidae), Dry Weight In Relationship To Pupal Fresh Weight And Case Diameter, W. J. Mattson, C. N. Koller, S. S. Slocum
Adult Female Spruce Bedworm, Choristoneura Fumiferana (Lepidoptera: Tortricidae), Dry Weight In Relationship To Pupal Fresh Weight And Case Diameter, W. J. Mattson, C. N. Koller, S. S. Slocum
The Great Lakes Entomologist
(excerpt)
The weights of adult insects are often measured in production and population studies in order to estimate such variables as growth rates, food conversion efficiencies, fecundity, and others. For the eastern spruce budworm, Choristoneura fumiferana (Clemens), both pupal fresh weights and pupal case diameters have been measured as indicators of adult fecundity and adult dry weights (Miller 1957). However, there are no reports explicitly showing the relationship between these metric pupal variables and adult dry weights. This is the goal of this note.
Annotated Bibliography Of The Ambrosia Beetle Xylosandrus Germanus (Coleoptera: Scolytidae), B. C. Weber, J. E. Mcpherson
Annotated Bibliography Of The Ambrosia Beetle Xylosandrus Germanus (Coleoptera: Scolytidae), B. C. Weber, J. E. Mcpherson
The Great Lakes Entomologist
(excerpt)
Xylosandrus germanus (Blandford) (= Xyleborus germanus) is an ambrosia beetle that is found in Japan, Korea, the KurU Islands, Vietnam, China, Taiwan, central Europe, and the Cnited States (Nobuchi 1981). It attacks apparently healthy plants and those that are dying or recently dead (Weber 1982). Kaneko (1967) reported X. germanus to be a serious pest on tea (Thea sp.) plants in Japan, and Heidenreich (1%0) reported it on oak (Quercus sp.) trees in Gennany. This beetle seems to be increasing in economic importance on black walnut (Juglans nigra L.) and other hardwood species in the U.S. …
The Distribution Of Xylosandrus Germanus In America North Of Mexico (Coleoptera: Scolytidae), B. C. Weber, J. E. Mcpherson
The Distribution Of Xylosandrus Germanus In America North Of Mexico (Coleoptera: Scolytidae), B. C. Weber, J. E. Mcpherson
The Great Lakes Entomologist
Xylosandrus gemzanus (Blandford) (= Xyleborlus germanus), a sexually dimorphic beetle. was first described in 1894 from specimens collected in Japan; it is now also known from Korea. the Kuril Islands, Vietnam, China, Taiwan, central Europe, and the U.S. ("Sobuchi 1981).
Projected Red Pine Yields From Aldrin-Treated And Untreated Stands Damaged By White Grub (Coleoptera: Scarabaeidae) And Other Agents At Stand Age Ten Years, Richard F. Fowler, Louis F. Wilson, Allen L. Lundgren
Projected Red Pine Yields From Aldrin-Treated And Untreated Stands Damaged By White Grub (Coleoptera: Scarabaeidae) And Other Agents At Stand Age Ten Years, Richard F. Fowler, Louis F. Wilson, Allen L. Lundgren
The Great Lakes Entomologist
White grubs affect pine plantations by killing some trees and by reducing vigor and growth of others. Light to moderate mortality only slightly affects timber yields and financial re- turns if the level of trees remains at the number required for full utilization of the site. Reduced height growth, however, lowers apparent site quality and substantially affects yields and financial returns. The 100 year projections suggest that greater product volumes, financial returns. and higher interest rates on the investment will be gained by grub control before tree growth is reduced.
The Female Of Graphoderus Manitobensis With Notes On Identification Of Female Graphoderus (Coleoptera: Dytiscidae), Byrn H. Tracy, William L. Hilsenhoff
The Female Of Graphoderus Manitobensis With Notes On Identification Of Female Graphoderus (Coleoptera: Dytiscidae), Byrn H. Tracy, William L. Hilsenhoff
The Great Lakes Entomologist
Ten male and II female Graphoderus manitobensis were collected in April and May, 1980 and 1981 from a pond 16 kIn west of Madison, WI. Females can be distinguished from female G. fascicollis (Harris) by their much narrower metastemal wings and more pronounced conugated sculpturing on the pronotum. The SCUlpturing and markings on the pronorum. width of the metastemal wings, and projections at the base of the ovipositer are used to identify females of G. manitobensis and three closely related species.
Effects Of Various Split Developmental Photophases And Constant Light During 24 Hour Period On Adult Morphology In Euschistus Tristigmus Tristigmus (Hemiptera: Pentatomidae), J. E. Mcpherson, S. M. Paskewitz
Effects Of Various Split Developmental Photophases And Constant Light During 24 Hour Period On Adult Morphology In Euschistus Tristigmus Tristigmus (Hemiptera: Pentatomidae), J. E. Mcpherson, S. M. Paskewitz
The Great Lakes Entomologist
Rearing immatures of Euschistus tristigmus tristigmus in a range of split photophases during each 24 h period and in constant light showed that the adult dimorphic response in shoulder shape and number of midventral spots could be produced; individuals reared in photoperiods in which each scotopnase was at least 2 h in length developed into the tristigmus (short-day) form.
The Distribution Of Natural Enemies Of The Corn Leaf Aphid (Homoptera: Aphdidae) On Field Corn, S. W. Wagner, W. G. Ruesink
The Distribution Of Natural Enemies Of The Corn Leaf Aphid (Homoptera: Aphdidae) On Field Corn, S. W. Wagner, W. G. Ruesink
The Great Lakes Entomologist
(excerpt)
The corn leaf aphid (CLA), Rhopalosiphum maidis (Fitch), is found on field corn in the midwest Cnited States each year. Except for infrequent and scattered outbreaks, CLA populations remain at low levels. Injury to corn occurs during tasseling (Snelling et aL 1941) and is caused by CLAs which are the progeny of colonizers that arrived 2-3 weeks earlier when the corn was in the whorl stage (Bryson 1934, Falter 1963).
The Distribution And Spread Of (Homoptera: Aphididae) In The North-Central States With Notes On Its Hosts, Biology, And Origin, David Voegtlin
The Distribution And Spread Of (Homoptera: Aphididae) In The North-Central States With Notes On Its Hosts, Biology, And Origin, David Voegtlin
The Great Lakes Entomologist
(excerpt)
Hyadaphis tataricae (Aizenberg). an aphid known from eastern Europe, is rapidly becoming a pest on ornamental honeysuckles (Lonicera spp.) throughout the north-central states.
The source of the infestation is not known but it could have been introduced from eastern Canada where it has been present since 1976 (Boisvert et aI. 1981), or by separate introduction from eastern Europe. The first observations in the United States were made in the north-eastern corner of Illinois (Lake County) in 1979 (Voegtlin 1981). Observations of damage levels in that area support the hypothesis that its introduction to the north-central states originated there …
Triepeolus Mesillae (Hymenoptera: Apoidea) In Illinois: A Cleptoparasitic Bee New To The Eastern United States, John K. Bouseman
Triepeolus Mesillae (Hymenoptera: Apoidea) In Illinois: A Cleptoparasitic Bee New To The Eastern United States, John K. Bouseman
The Great Lakes Entomologist
(excerpt)
Cockerell (Ann. Mag. Nat. Hist., Ser. 7, 13:33-42,1904) named Triepeolus mesillae on the basis of a series of specimens which he collected at Mesilla, New Mexico. A second locality for the species was added by Rozen (Amer. Mus. Novitates 2244, 1966) when he described the larva of T. mesillae from cells of Nomia (Epinomia) triangulifera Vacha! excavated by E. A.