Entomology Commons^™

Eastern Pine Seedworm, Cydia Toreuta (Lepidoptera: Tortricidae) In Red Pine Cones In Wisconsin, S. A. Katovich, H. M. Kulman

The Great Lakes Entomologist

Cydia toreuta population densities, prolonged diapause behavior, parasitism and adult emergence patterns were examined over four years at two red pine locations in Wisconsin. Last-instar densities ranged from 0.54 to 3.18 per cone. This was considered a wide range for this species in red pine. Population clumping was evident at last-instar densities below 2.90, however no consistent pattern was evident between years. Clumping disappeared at populations greater than 2.90 last-instars. Prolonged diapause varied from 7.8 to 38.9070. Parasitism rates var­ ied from 10.9 to 46.6 %. Phanerotoma toreuta (Hymenoptera: Braconidae) was the most abundant parasite at both sites and emerged …

Influence Of Strip-Mining On The Mortality Of A Wetland Caddisfly, Limnephilus Indivisus (Trichoptera: Limnephilidae)., J. D. Usis, B. A. Foote

The Great Lakes Entomologist

A coal mine about 2.2 km upstream from Stillfork Swamp Nature Preserve, Carroll Co., Ohio was suspected of causing a reduction in Limnephilus indivisus caddisflies in the south half of the preserve. Second instar L. indivisus larvae collected from the south half of the preserve and from two control areas were reared in cages at the site of collection and at the other two sites in a replicated experiment. Elevated total dissolved solids in water samples from within rearing enclosures displayed strong correlation (r2 = 0.864) with increased mortality when compared to larvae reared in unaffected areas. This investigation suggests …

Water Quality Of The West Branch Of The Dupage River And Kline Creek, Illinois, As Evaluated Using The Arthropod Fauna And Chemical Measurements, Chris E. Peterson

The Great Lakes Entomologist

The water quality of the West Branch of the DuPage River (W. Branch) and Kline Creek, a tributary of the W. Branch, were examined. Both streams are located in rapidly developing DuPage County, IL. Using Hilsenhoff's biotic index of the arthropod fauna and selected chemical measurements, the W. Branch was found to be moderately polluted and Kline Creek moderately to severely polluted. High mean biotic index measurements ranging from 6.28 to 7.97, ammonia- nitrogen readings of 1.0-3.9 ppm, nitrate-nitrogen readings of 0.4-1.6 ppm, chloride readings of 231-313 ppm, and orthophosphate readings of 0.3-0.5 ppm reflect organically polluted waters in both …

Trap-Nest Bore Diameter Preferences Among Sympatric Passaloecus Spp. (Hymenoptera: Sphecidae), John M. Fricke

The Great Lakes Entomologist

Five species of Passaloecus used trap-nests in a study area in southern Michigan. Significant differences in trap-nest bore diameter selection were noted among P. annulatus, P. areolatus, P. cuspidatus, and P. monilicornis. P. annulatus and P. areolatus selected bore diameters 1.6 to 2.4 mm, P. cuspidatus used bore diameters of 2.0 to 6.4 mm, and P. monilicornis selected diameters of 1.6 to 3.6 mm.

Trap-Nest Design For Small Trap-Nesting Hymenoptera, John M. Fricke

The Great Lakes Entomologist

(excerpt)

Many solitary bees and wasps construct brood cells in pre-existing natural cavities such as beetle borings or in excavations of pithy stems and twigs like Sambucus and Juglans. Artificial nesting materials are also acceptable and provide a convenient approach to study nest architecture, nesting activity, provisions and parasites. Arti- ficial nesting materials have included bamboo, glass tubes, plastic straws, cuttings of twigs and stems, and trap-nests. However, use of many of these materials have significant drawbacks.

Foodplant Processing Adaptations In Four Hyalophora Species (Lepidoptera: Saturniidae): Regional And Taxonomic Specialization, J. Mark Scriber, Eric Grabstein

The Great Lakes Entomologist

To determine whether local populations of four Hyalophora species (Lepidoptera: Satumiidae) had improved survival or were physiologically adapted for rapid and/or efficient growth on their local hosts, a series of larval feeding studies were conducted using gravimetric techniques on several host plant species. Significantly better survival and growth performances were observed for H. columbia (a tamarack specialist) on its host, Larix laricina. Similarly, H. gloveri had the best growth performance on Elaeagnus angustifolia (its favorite) as did certain sympatric populations of H. cecropia on black cherry, Prunus serotina. Hyalophora gloveri and H. columbia are largely sympatric with Betula papyrifera …

An Array Of Spatulate Sensilla On Antennae Of Male Brachymeria Lasus (Hymenoptera: Chalcididae), D. H. Simser, H. C. Coppel

The Great Lakes Entomologist

An array of spatulate sensilla on the ventral flagellar surface of each antenna of male Brachymeria lasus occurs only on segments IV-VII and is absent on female antennae. Most such sensilla are on segment VI. Each spatulate sensillum was 15 p, by 16.7 p with a stalk extending 17 p, from the antennal base. Pores were not apparent, but the sensillum surface was imbricated. The sensilla are speculated to have a role in the courtship sequence of this chalcid by functioning both as chemoreceptors of the female-produced sex pheromone and as mechanoreceptors to indicate female receptivity, as female B. lasus …

Noteworthy Range Extensions Of Three Emesine Species (Heteroptera: Reduviidae), J. E. Mcpherson

The Great Lakes Entomologist

The first records of Empicoris culiciformis and E. winnemana from Michigan and of Pseudometapterus umbrosus from Illinois are reported. All represent considerable extensions of their recorded ranges.

An Annotated Checklist Of The Lepidoptera Of The Beaver Island Archipelago, Lake Michigan., Dennis Profant

The Great Lakes Entomologist

A survey of Lepidoptera was conducted in 1987 and 1988 on Beaver Island, Lake Michigan. When combined with a 1930 survey of the Beaver Island Archipelago, 757 species from 41 families have now been recorded from these islands.

A Review Of The Genus Gryllus (Orthoptera: Gryllidae), With A New Species From Korea, Richard D. Alexander

The Great Lakes Entomologist

Gryllus is the most widely distributed genus of the Tribe Gryllini, and may be the largest; it includes 69 described species occupying most of the New World, Africa, and Europe, and much of Asia. A new species from Korea significantly extends the known range of the genus.

Alarm Pheromone In A Gregarious Poduromorph Collembolan (Collembola: Hypogastruridae), Foster Forbes Purrington, Patricia A. Kendall, John E. Bater, Benjamin R. Stinner

The Great Lakes Entomologist

We report an alarm pheromone in the gregarious poduromorph collembolan, Hypogastrura pannosa. Cuticular rupture results in emission of a rapidly vaporizing hexane-soluble material with an active space diameter of ca. 1 cm. Conspecifics encountering the vapor front respond with stereotypic aversion and dispersal behaviors. This is the first report on the presence of an alarm pheromone in the order Collembola.

Predation By Amphibians And Small Mammals On The Spruce Budworm (Lepidoptera: Tortricidae), Daniel T. Jennings, Hewlette S. Crawford Jr., Malcolm L. Hunter Jr.

The Great Lakes Entomologist

Stomach-content analyses of pitfall-trapped amphibians and small mammals showed that the eastern American toad, Bujo americanus americanus, and the wood frog, Rana sylvatica, preyed on late instars and moths of the spruce budworm, Choristoneura fumiferana. The spotted salamander, Ambystoma maculatum, and the masked shrew, Sorex cinereus, also preyed on late instars of the spruce budworm.

Dispersal Of Fenusa Dohrnii (Hymenoptera: Tenthredinidae) From An Alnus Short-Rotation Forest Plantation, Elwood R. Hart, Richard B. Hall, Roger D. Hanna

The Great Lakes Entomologist

The European alder leafminer, Fenusa dohrnii, is a defoliating insect pest of Alnus in short-rotation forest plantations. A 2-year study was performed to quantify movement from infested stands to uninfested areas. Sticky traps and potted monitor trees were installed at different locations within and at various distances from (0,5, 10, and 20 m) an infested stand to measure adult flight and oviposition activity, respectively. Trap catch and oviposition activity fell off sharply with distance, few insects being trapped or eggs laid at distances of 5 m or greater from the infestation.

List Of The Lepidoptera Of Black Sturgeon Lake, Northwestern Ontario, And Dates Of Adult Occurrence, C. J. Sanders

The Great Lakes Entomologist

From May to September each year from 1960 through 1968, a collection of Lepidoptera was made at Black Sturgeon Lake, northwestern Ontario, from speci­ mens captured in a light trap and from specimens netted during the day. A total of 564 species was recorded from 70 families. A list of the species with dates of capture is presented.

Acorns As Breeding Sites For Chymomyza Amoena (Loew) (Diptera: Drosophilidae) In Virginia And Michigan, Henretta Trent Band

The Great Lakes Entomologist

Chymomyza amoena is the only chymomyzid fly emerging from white oak acorns in Virginia. An average of 2-3 adult flies emerged from a single acorn in July while emergence declined to 0.4 adults/acorns in September. In fall, Drosophila melanogaster was also present. The incidence of drosophilid (Drosophila, Chymomyza) larvae in parasitized acorns in Virginia (400/0) in autumn was significantly greater than in Michigan (14%). The Chymomyza larvae present in the parasitized acorns in Michigan most likely were C. amoena, from the known adaptation of this species in Michigan to frass-breeding.

Geographic Distribution Of Siphonaptera Collected From Small Mammals On Lake Michigan Islands, William C. Scharf

The Great Lakes Entomologist

The distribution of ten flea species collected from five small mammal host species on 13 Lake Michigan islands is described. Four new eastern and southern records for Hystrichopsylla dippiei Rothschild are given. Speculative suggestions are made regarding dispersal routes of some of the small mammal host species, and the distribution of flea species from Peromyscus maniculatus gracilis LeConte is dis- cussed in the context of island biogeography theory.

Host Plant Suitability And A Test Of The Feeding Specialization Hypothesis Using Papilio Cresphontes (Lepidoptera: Papilionidae), J. Mark Scriber, Robert V. Dowell

The Great Lakes Entomologist

The concept that host plant favorites would be used for more rapid and/or efficient growth of the "locally adapted" individuals was tested in a preliminary way using the giant swallowtail butterfly, Papilio cresphontes. Populations feeding only on northern prickly ash, Zanthoxylum americanum (from Wisconsin), primarily (or exclusively) on hoptree, Ptelea trifoliata (in Ohio) and on lime prickly ash, Z. fagara, or Citrus, (in Florida) were compared on alternate hosts and on their actual local hosts under controlled environmental conditions. While the results with final instar larvae generally support the feeding specialization hypothesis with regard to more rapid …

Acrobasis Shoot Moth (Lepidoptera: Pyralidae) Infestation-Tree Height Link In A Young Black Walnut Plantation, George Rink, Barbara C. Weber, D. Michael Baines, David T. Funk

The Great Lakes Entomologist

Acrobasis shoot moth infestations were evaluated in a young black walnut progeny test for 4 years, from ages 3 to 6. Infestation levels were greatest on the largest trees in the fourth and fifth year after plantation establishment, and were declining by the sixth year. Acrobasis infestation appears to be a problem primarily on young trees less than 2.5 m in height. There was no evidence for genetic resistance to Acrobasis infestation in black walnut.

No Intersexual Differences In Host Size And Species Usage In Spalangia Endius (Hymenoptera: Pteromalidae), B. H. King

The Great Lakes Entomologist

Spalangia endius were collected from fly pupae, primarily house fly and stable fly, from a poultry house in Indiana. Male and female wasps did not differ within and across host species in host size usage. Also, despite stable fly pupae being significantly smaller than house fly pupae, the proportion of male wasps emerging from the two host species was similar.

Acoustic Signals Of Graminella Nigrifrons (Homoptera: Cicadellidae), S. E. Heady, L. R. Nault

The Great Lakes Entomologist

The deltocephaline leafhopper, Graminella nigrifrons, produces low intensity sub- strate transmitted vibrations (signals) to facilitate location of virgin females by males during courtship. In the laboratory, signals produced on maize leaves were received by a phonographic cartridge, amplified, and analyzed on an oscillograph and sonograph. Male calls, that are produced spontaneously, are complex, consisting of three consecutive sections. Section 1 consists of ca. 3 sec of irregular clicks. Section 2 has ca. 4 sec of repeated phrases consisting of a continuous series of 0.4 sec chirps and a roll. Section 3 consists of ca. 5 sec of an intermittent …