Life Sciences Commons^™

Effect Of Beauveria Bassiana On Underground Stages Of The Colorado Potato Beetle, Leptinotarsa Decemlineata (Coleoptera: Chrysomelidae), George E. Cantwell, William W. Cantelo, Robert F. W. Schroder

The Great Lakes Entomologist

Tests were conducted to determine the effect of the fungus Beauveria bassiana (B.b.) on underground of the Colorado potato beetle (CPB), Leptinotarsa decemlineata. Two levels of B.h., g/m2 and 75 g/m2 , were suspended in water and sprinkled over the surface of the ground in cages to which CPB were added, either as overwintering adults or as 4th instar larvae of the 15t generation. Efficacy of treatments was determined by counting emerged adults. Neither level of B .b. increased mortality in overwintering adults. The highest level of B.h. caused a significant decline in emergence of adults from the 1st …

Effect Of Beta·Exotoxin Of Bacillus Thuringiensis On Development Of The Mexican Bean Beetle (Coleoptera: Coccinellidae), George E. Cantwell, William W. Cantelo, Michael A. Cantwell

The Great Lakes Entomologist

Mexican bean beetle larvae were fed several levels of Bacillus thuringiensis var. thuringiensis that contained the beta-exotoxin to determine if this treatment would extend or prolong their preadult life span. Feeding on bean foliage sprayed with a solution containing 2 g/liter active ingredient diluted I: 10,000, extended the life by 7.5 days. Dilutions of I: 15,000 and 1:20,000 extended the life by over 3 and 5 days, respectively. By extending the time of larval development, enhancement of parasite or predator activity may occur.

The Influence Of Host Condition On Post First Instar Development Of The Bronze Birch Borer, Agrilus Anxius (Coleoptera: Buprestidae), John Ball, Gary Simmons

The Great Lakes Entomologist

The bronze birch borer is a contributing factor in birch dieback. It is believed that host condition has a major influence on the development of the borer. We found that the host tree's apparent condition does not appear to influence post first instar development.

Parasitism Of Early Instar Jack Pine Budworm (Lepidoptera: Tortricidae) By Apanteles Spp. (Hymenoptera: Braconidae) And Glypta Fumiferanae (Hymenoptera: Ichneumonidae), N. C. Elliott, G. A. Simmons, C. Chilcote

The Great Lakes Entomologist

Glypta fumiferanae and two species of Apanteles parasitized 1st-4th instar jack pine bud worm (Choristoneura pinus). Apparent parasitism of budworm in four Michigan populations ranged from 10.6 to 30.9% for A. fumiferanae, 4.3-16.4% for A. morrisi, and 2.1-9.1 % for G.fumiferanae. A. morrisi probably parasitized 3rd-4th instar jack pine bud worm. Based on the results obtained, it is suggested that sampling overwintering budworm larvae is appropriate for estimating apparent parasitism by A. fumiferanae and G. fumiferanae. Sampling budworm larvae at ca. 500 degree-days (base 8.9°C) is appropriate for estimating apparent parasitism by A. morrisi.

First Documented Record Of Oarisma Powesheik (Lepidoptera: Hesperiidae) In Canada, P. M. Catling, J. D. Lafontaine

The Great Lakes Entomologist

During a brief survey of the prairie areas near Vita, Manitoba, July 1985, Oarisma powesheik Parker was found to be abundant, although often local. Specimens collected constitute the first documented record for the species in Canada.

Evaluation Of Pit-Trap Transects With Varied Trap Spacing In A Northern Michigan Forest, Renate M. Snider, Richard J. Snider

The Great Lakes Entomologist

The study compared effects of four distances between traps (range 0.5-4.0 m) on arthropod captures. Twelve traps were aligned in each of four transects, and 20 samples. trap were obtained during summer and fall in a northern Michigan deciduous forest. Catches proved to be unaffected by trap spacing. Rather, they reflected local within-site differences in abundance of dominant species.

Host Plant For Brachyleptura Champlaini (Coleoptera: Cerambycidae), D. C. L. Gosling

The Great Lakes Entomologist

(excerpt)

Brachyleptura champlaini Casey was relegated to synonymy with Anoplodera vagans (Olivier) by Swaine and Hopping (1928), and was so regarded until Linsley and Chemsak (1976) restored the status of both Casey's species and the genus Brachyleptura.

Barbaetis: A New Genus Of Eastern Nearctic Mayflies (Ephemeroptera: Baetidae), R. D. Waltz, W. P. Mccafferty, J H. Kennedy

The Great Lakes Entomologist

The new genus Barbaetis Waltz and McCafferty, and new species Barbaetis benfieldi Kennedy are described from larvae collected from the New River, Virginia. Barbaetis is easily told from Baetis by the presence of procoxal osmobranchia. Cladistics of B. benfieldi, related Pseudocloeon species, and the lutheri and pavidus complexes of Baetis are presented and indicate the need for further taxonomic revision. The habitat of B. benfieldi is described in terms of several ecological parameters. The new species demonstrates a univoltine life history with postembryonic development restricted to a short springtime period.

New Synonomy In Hypogastrura (Collembola: Hypogastruridae), R. D. Waltz, J. W. Hart

The Great Lakes Entomologist

(excerpt)

In the course of faunistic studies of Indiana Collembola, seasonal occurrences of the two species Hypogastrura packardi (Folsom), 1902 and H. notha (MacNamara), 1922 were found to exhibit seasonal dimorphism and population dynamics similar to those patterns observed in cyclomorphic species previously reported in literature (Leinaas 1981 a,b).

Developmental Rate And Longevity Of Illinoia Pepperi (Homoptera: Aphididae) On Excised Blueberry Leaf Disks, E. A. Elsner, M. E. Whalon

The Great Lakes Entomologist

The aphid Illinoia pepperi is the vector of blueberry shoestring virus, a serious disease of cultivated high bush blueberry. We present a laboratory study of the developmental rate of I. pepperi on excised blueberry leaf discs at different temperatures from 5 to 29°C. Growth rates were lowest at the upper temperature treatments (26 and 29°) and at 10°C. Growth rate and duration in degree-days for each life stage are presented as well as an overall regression equation for development. The lower developmental threshold was calculated at 3.4°C. The results are being used in a phenological management system and an epidemiological …

The Brachycentridae (Trichoptera) Of Wisconsin, William L. Hilsenhoff

The Great Lakes Entomologist

Five species of Brachycentrus and three species of Micrasema were collected. Previous records for Brachycentrus lateralis in Wisconsin are incorrect and should be for B. incanus. but B. lateralis larvae were collected recently in Douglas County. Brachycentrus americanus. B. numerosus. B. occidentalis, Micrasema kluane. M. rusticum and M. wataga usually occurred statewide in unpolluted permanent streams, but were generally absent from southern and eastern agricultural counties where most streams are organically enriched. More than one species and genus frequently occurred in the same stream. with Micrasema larvae often being found in streams with less current than required by Brachycentrus …

Pammene Perstructana (Walker) (Lepidoptera: Tortricidae) Identified After More Than A Century, William E. Miller

The Great Lakes Entomologist

Sciaphila perstructana Walker has been known only from the female holotype, and Pammelle signifera (Heinrich) only from males. Based on associated males and females from the Great Lakes area. the two names apply to one species. The resulting synonymy leads to a new combination. Pammene perstructana, and finally associates a species with this long-battling specitlc name.

Melanistic Males Of Callosamia Promethea (Lepidoptera: Saturniidae), G. P. Waldbauer, J. G. Sternburg

The Great Lakes Entomologist

(excerpt)

During the summer of 1983 seven melanistic male promethea moths appeared among several hundred males that emerged from cocoons we were holding in the laboratory.

Adult Emergence In Two Univoltine Callosamia Promethea Populations: Preponderance Of The Early Emerging Morph In The North And Of The Late Emerging Morph In The South (Lepidoptera: Saturniidae), G. P. Waldbauer, J. G. Sternburg

The Great Lakes Entomologist

Callosamia promethea is common on wild black cherry, Prunus serafina, at the University of Michigan Biological Station in northern lower Michigan. In this area the early emerging morph is preponderant, while to the south in northern Indiana, the late emerging morph is preponderant.

Longevity And Weight Loss Of Free-Flying Male Cecropia Moths, Hyalophora Cecropia (Lepidoptera: Saturniidae), G. P. Waldbauer, J. G. Sternburg, D. H. Janzen

The Great Lakes Entomologist

During their spring flight season, free-ranging male cecropia moths lived a maximum of 12 days (one of 124 recaptured moths of 387 released moths). The number of survivors declined precipitiously after day five; five to seven days is probably the usual life span. The recaptured moths did not have different initial weights than those that were not recaptured. The larger the moth the more absolute weight it lost and the faster it lost weight during the first few days. A moth lost about 20% of its weight during the first night of flight and accumulated about a 40% weight loss …

The Slave-Making Ant Formica Gynocrates (Hymenoptera: Formicidae), Mary Talbot

The Great Lakes Entomologist

Formica gynocrates, a recently described species of slave-making ant, was found at the E. S. George Reserve in southern Michigan. It contrasted with the other five sanguinea group species found there by living in dry fields and enslaving a field-dwelling ant, Formica vinculans. Slave raids were carried on from 16 June to 11 September and flights occurred between 5 July and 14 August. Three other sanguinea group species, F. subintegra, F pergandei, and F. rubicunda, were most common along field-wood ecotones. They enslaved F subsericea, and F pergandei occasionally took F pallidefulva nitidiventris F subnuda lived in and under …

A New Host Family For Lyroda Subita (Hymenoptera: Sphecidae), Frank E. Kurczewski, Margery G. Spofford

The Great Lakes Entomologist

Lyroda subita, a sphecid that ordinarily stocks its cells with Gryllidae, is reported provisioning a two-celled nest in upstate New York with Tridactylidae. The structure of the nest, depth of celis, stages of wasps, and degree of paralysis of the prey are described.

Temperature And Crowding Effects On Virus Manifestation In Neodiprion Sertifer (Hymenoptera: Diprionidae) Larvae, M. A. Mohamed, H. C. Coppel, J. D. Podgwaite

The Great Lakes Entomologist

Temperature and (or) crowding (larval density) functioned as stressors in the induction of symptoms associated with the nucleopolyhedrosis virus of the European pine sawfly, Neodiprion sertifer, Subsamptes of larvae maintained at 30 and 35°C, with three levels of larval density each (20, 60, and 100/shoot) which had died under these conditions, revealed the presence of polyhedral inclusion bodies under microscopic examination. In contrast, larvae maintained at 25°C with the same three larval density levels experienced no symptoms of virus infection or mortality, The latter was consistent with field observations when temperatures during larval development ranged from 14°C to 27°C …

Nearctic Rhyacionia Pine Tip Moths: A Revised Identity And A New Species (Lepidoptera: Tortricidae), William E. Miller

The Great Lakes Entomologist

Moths now identified as Rhyacionia busckana are a mix of two long-confused sibling species. The name R. busckana applies to the species with male antennal pecten length subequal to antennal segment length. and with female sterigma width threecfold or more ostium bursae width. The name R. granti applies to the previously undescribed species ltype locality Iron Bridge, Algoma District, Ontario) with male antennal pecten length at least two-fold antennal segment length, and with female sterigma width less than three-fold ostium bursae width. Structural differences were discovered after sex attractant studies revealed differences in behavioral physiology and phenology. In the Great …

An Illustrated Key To The Pupae Of Six Species Of Hydropsyche (Trichoptera: Hydropsychidae) Common In Southern Ontario Streams, Jane E. Rutherford

The Great Lakes Entomologist

I present a key for the identification of pupae and pupal exuviae of six species of Hydropsyche that are widely distributed throughout northeastern North America and that are particularly abundant in the streams of southern Ontario. Use of the pupal key requires less manipulation of a specimen than either removing larval sclerites from the pupal case or attempting to discern the adult genitalia through the pupal integument.

Archilestes Grandis In Wisconsin (Odonata: Lestidae), Susan Sullivan Borkin

The Great Lakes Entomologist

(excerpt)

Archilestes grandis (Rambur) is the largest damselfly that occurs in America north of Mexico. Its distribution in the United States was reported by Muttkowski (1910) as Lower Sonoran, Washington to Baja California, and Texas.

Clover Root Curculio Injury And Abundance In Minnesota Alfalfa Of Different Stand Age, Whitney S. Cranshaw

The Great Lakes Entomologist

Root injury and midsummer adult abundance of clover root curculio (CRC), Sitona hispidulus (Fabricius), was surveyed in 24 different aged southeastern Minnesota alfalfa fields. CRC presence was not detected in first year fields 2-3 months following stand establishment. Increased root scarring was observed as stand age increased and most fields 3-5 years old showed heavy CRC root scarring. High CRC adult popUlations and widespread root scarring was found in second year alfalfa fields which suggests that CRC is a mobile insect capable of rapidly colonizing new plantings.

Aquatic Insect Colonization And Substrate Changes In A Relocated Stream Segment, Richard P. Narf

The Great Lakes Entomologist

A section of Bear Creek in northwestern Wisconsin was relocated to accommodate new highway construction. The 850-m section of the stream was shortened to 650 m and fashioned with five broad bends and a uniform width and depth. Sandy substrate and lack of coarse particulate organic matter within the new channel delayed colonization by aquatic insects. The absence of snags, boulders, and cobbles in the design of the new channel reduced available habitat. Substrate stabilization and colonization of available habitats was determined to be complete 5.5 years after channelization, when the 22 dominant insect taxa were similar to the control …

Social Feeding Behavior Of Hyphantria Cunea Larvae (Lepidoptera: Arctiidae) In Multiple Choice Experiments, William N. Cannon Jr.

The Great Lakes Entomologist

The response of fall webworm larvae, Hyphantria cunea, to identical feeding stimuli presented in a series of multiple choice tests was studied in the laboratory. Instead of responding independently, all larvae in 61 % of the trials were observed to aggregate at one of two identical feeding stations.

Notes On The Vanhorniidae (Hymenoptera), Mark Deyrup

The Great Lakes Entomologist

The biology and taxonomy of Vanhornia eucnemidarum Crawford, a rare and specialized parasitoid of Eucnemidae, is reviewed. The position of the genus Vanhornia as a separate family is reaffirmed.

Description Of A New Species Of Slave-Making Ant In The Formica Sanguinea Group (Hymenoptera: Formicidae), Roy R. Snelling, William F. Buren

The Great Lakes Entomologist

The new species, Formica gynocrates, is described and illustrated from all the castes. This slave-making species is a member of the sanguinea group and is most similar to F. pergandei. The type locality is the E. S. George Reserve, Livingston County, Michigan. Specimens were also examined from North Dakota, Wyoming, and Colorado. A key is provided for the separation of the described North American members of the sanguinea group. The most commonly associated slave species is F. vinculans Wheeler, a member of the neogagates group. It is our opinion that F. vinculans is a valid species and not a synonym …

The Economics Of Spruce Budworm Outbreaks In The Lake States: An Overview, Debra J. Huff, Bruce A. Montgomery, John A. Witter, G. Robinson Gregory

The Great Lakes Entomologist

Economic effects of spruce budworm outbreaks in the Lake States were examined. The recent outbreak caused spruce and fir mortality on 420 thousand ha (I.OS million acres) of commercial forest land in the Lake States. Two models of Lake States spruce-fir markets were developed. A Static Economic Model established the nature of the Lake States spruce-fir market and a Comparative Static Model examined changes brought about by spruce budworm outbreaks.

Outbreaks result in short-run supply shifts which probably decrease total revenue to stumpage owners but do not affect demand. The magnitude of long-run impacts were dependent on developing Lake States …

Effect Of White Spruce Release On Subsequent Defoliation By The Yellowheaded Spruce Sawfly, Pikonema Alaskensis (Hymenoptera: Tenthredinidae), B. W. Morse, H. M. Kulman

The Great Lakes Entomologist

Hand release of 22 5-year-old white spruce, Picea glauca (Moench) Voss, dramatically increased the amount of defoliation by the yellowheaded spruce sawfly, Pikonema alaskens is . The percent defoliation of the released trees was six times the defoliation in the control trees. A light overstory for young white spruce is suggested as a silvicultural method of reducing defoliation by this sawfly.

Notes On Microctonus Spp. (Hymenoptera: Braconidae) Introduced To Iowa Against The Alfalfa Weevil, Hypera Postica (Coleoptera: Curculionidae), James W. Mertins

The Great Lakes Entomologist

The braconid parasitoid Microctonus colesi was released in Story and Boone counties, Iowa, but not recovered from collected alfalfa weevils, Hypera postica. Sampled adult weevils were parasitized at an overall seasonal rate of 41.5% by Microctonus aethiopoides, although it had not been released in the immediate vicinity.

Live Branches On Pine Stumps Deter Pales Weevil Breeding In Michigan (Coleoptera: Curculionidae), Jeffrey A. Corneil, Louis F. Wilson

The Great Lakes Entomologist

Eastern white pine and Scotch pine stumps with living branches were unattractive to pales weevil for breeding. When feasible, leaving a few lower branches on Christmas tree stumps during harvest should prevent weevil buildup.