Entomology Commons^™

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.