455 research outputs found

    Preliminary Inventory of Lepidoptera From Cook County, Minnesota: Hesperioidea, Papilionoidea, Drepanoidea, Geometroidea, Bombycoidea, Sphingoidea and Noctuoidea

    Get PDF
    Four hundred and sixty five species of butterflies, skippers and moths, collected from 1988 through the summer of 2007, are reported from Cook County, MN. Included are data for three butterfly species of special concern: Lycaeides idas nabokovi Masters, Erebia discoidalis (Kirby) and Oeneis jutta (Hübner). Numbers of species recorded for the following families were: Hesperiidae (14), Papilionidae (2), Pieridae (7), Lycaenidae (14), Nymphalidae (24), Satyridae (6), Danaidae (1), Thyatiridae (4), Drepanidae (3), Geometridae (99), Lasiocampidae (2), Saturniidae (4), Sphingidae (16), Notodontidae (20), Arctiidae (19), Lyman- triidae (5) and Noctuidae (225). Euphydryas phaeton (Drury) (Nymphalidae) is reported for the first time from Cook County, MN and Pontia protodice (Boisduval & LeConte) (Pieridae) and Hyalophora columbia (Smith) (Saturniidae) for the first time from northeastern Minnesota

    Adult Trichoptera of the Devil Track River Watershed, Cook County, Minnesota and Their Role in Biomonitoring.

    Get PDF
    Thirty two light trap collections of 7,797 adult Trichoptera made from 1990-1992, show that the Devil Track River Watershed in northeast Minnesota includes at least 16 families, 41 genera, and 101 species of caddisflies including three new state records: Agyrpnia colorata, Agrypnia obsoleta, and Polycentropus glacialis. The greatest number of species were represented by the families Limnephilidae (21), Leptoceridae (19), Hydroptilidae (13), Polycentropodidae (12), nidae (10), and Hydropsychidae (9). Twenty two species were collected sites and 46 at one or two sites. The greatest number of species (81) was collected from the Devil Track River and Devil Track Lake with fewer (64 and 40) from two sites on Junco Creek. Most species are widely distributed and inhabit cool streams and lakes throughout eastern and northern North America. The high species diversity at all sites and the low number of tolerant species indicate that water quality within the watershed is good to excellent. However, increased water temperature, acidity, and/or organic enrichment could adversely affect at least one third of the Trichoptera species inhabiting the Devil Track River Watershed

    Phenotypic Expression in the Paper Wasp \u3ci\u3ePolistes Fuscatus\u3c/i\u3e (Hymenoptera: Vespidae)

    Get PDF
    Quantification of color/color pattern in Polistes fuscatus (Fabricius) revealed that these attributes were the interaction of two antagonistic color sequences; their expression being highly correlated with nest microclimate (relative humidity-temperature). Color/ color pattern expressions were modified under experimental conditions to produce forms having natural counterparts in the field. Principal coordinates analyses and trend surface analyses using specimens collected throughout the United States indicated three color pattern trends, representing three distinct geographic areas, and, when objectively defined, without intergradation between and/or among areas. It was concluded that fuscatus should not be considered a widespread, polytypic species; rather, as three discrete species: an eastern, P. fuscatus (Fabricius); a western, P. aurifer Saussure; and an undescribed yellow form from the southwestern United States

    New Record of \u3ci\u3eVanessa Virginiensis\u3c/i\u3e (Drury) (Lepidoptera: Nymphalidae) as a Host of \u3ci\u3eThyrateles Procax\u3c/i\u3e (Cresson) (Hymenoptera: Ichneumonidae)

    Get PDF
    On 4 August, 2005 a male Thyrateles procax (Cresson) (Hymenoptera: Ichneumonidae) emerged from a pupa of Vanessa virginiensis (Drury) (Lepidoptera: Nymphalidae) which was contained within a screened cage in Cook County, MN. This is the first published record of Vanessa virginiensis as a host of Thyrateles procax. Adults of T. procax appear to be rare, as only two old records (both males) are known from Minnesota (University of Minnesota, Insect Collection

    Trichoptera (Caddisflies) of Watercress Marsh, Columbiana County, Ohio

    Get PDF
    Author Institution: Department of Biological Sciences, Youngstown State University ; Biology Department, Thiel CollegeCaddisfly adults numbering 4,371 were collected by means of light traps at Watercress Marsh, Columbiana Co., Ohio, from June 1976 to October 1981. The marsh occupies a site of the Grand River lobe of the Wisconsin Glacier near its southernmost extent in Columbiana Co. The 69 species in the 10 families collected included 15 species of Limnephilidae and 4 new state records. Seasonal species diversity values were calculated

    The Ground Beetles (Coleoptera: Carabidae) of Stillfork Swamp Nature Preserve, Carroll County, Ohio

    Get PDF
    Author Institution: Department of Biological Sciences, Youngstown State UniversityOne hundred and one species of Carabidae, including Bembidion incrematum LeConte, Pterostichus caribou Ball, Amara lunicollis Schi0dte, Stenolophus rotundatus LeConte, and Lebia tnoesta LeConte, new state records, representing 32 genera were identified from light trap collections operated during 1984 and 1986-1988 in the open wetland, and from barrier pitfall traps placed in an adjacent swamp oak—hawthorn forest in 1992. Most species are hygrophilous. Species richness was highest in Agonum and Bembidion. Pterostichus hamiltoni Horn, P. permundus (Say), Bembidion graciliforme Hayward were the most abundant species collected by pitfall traps and Stenolophus ochropezus (Say), Agonum tenue (LeConte) and Clivina impressefrons LeConte were the most abundant in light trap collections. Differences in the number and abundance of species collected by light traps and pitfalls suggest both methods be used to survey wetlands

    A nagy egyenlőtlenségek társadalmilag káros következményei

    Get PDF
    A jövedelmi egyenlőtlenségeknek az Egyesült Államokban tapasztalt lendületes növekedése már meglehetősen régóta tart; mostanra megkérdőjelezhetetlen, és szemlátomást stabil eleme lett hétköznapjainknak. Jóllehet sok kutatás vizsgálta már, mik az okai ennek a lendületnek, miből táplálkozik, mégis nagyon keveset tudunk arról, hogyan is próbálják az emberek a maguk számára kialakítani a megélhetés új módozatait egy olyan társadalomban, ahol az egyenlőtlenségek mértéke egyre csak fokozódik. Hogyan változtatták meg a növekvő jövedelmi egyenlőtlenségek azokat a szabályokat, amelyek betartása révén az emberek képesnek bizonyulnak betagozódni korunk kulcsszerepet betöltő intézményeibe (vegyük példának akár a családot, akár a katonaságot, a börtönt vagy az oktatási rendszert)? Hogyan változott meg a szabályoknak az az együttese, melyek alapján például a piacgazdaság rendszere „jutalmazza” a résztvevőket? Hogyan hatott mindez életvitelünk alkalmazkodóképességére? Hogyan változtatta meg életünket vezérlő attitűdjeinket s azokat a politikai ideológiákat, amelyekre fölesküdtünk
    corecore