A Field Key to the North American Species of Hylobius (Curculionidae)

1961 ◽  
Vol 93 (7) ◽  
pp. 501-502 ◽  
Author(s):  
R. J. Finnegan
Keyword(s):  
United States ◽  
North American ◽  
Economic Importance ◽  
North American Species ◽  
Eastern United States ◽  
Eastern Canada ◽  
The North

There are five known North American species in the genus Hylobius; H. pales (Hbst.), H. congener Dalla Torre, H. pinicola (Couper), H. radicis Buch., and H. warreni Wood. In recent years four of these species have increased considerably in economic importance in central and eastern Canada and the eastern United States; H. pales and H. radicis attacking pines and H. pinicola and H. warreni attacking spruces and pines. H. congener occurs only in small numbers and little is known about its ecology. It is important, therefore, to be able to separate these species readily in the field.

The North American Species in Group VII of Ips De Geer (Coleoptera: Scolytidae)

1965 ◽  
Vol 97 (2) ◽  
pp. 193-198 ◽  
Author(s):  
G. R. Hopping
Keyword(s):  
United States ◽  
New Species ◽  
North American ◽  
North American Species ◽  
The North ◽  
Northern United States

AbstractGroup VII of North American Ips contains I. thomasi, new species, I. borealis Swaine and I. swainei R. Hopping. They are less than 4.0 mm. long and females have the front of the head or at least the vertex smooth and shining, impunctate, or with very fine sparse punctures; males are more coarsely granulate-punctate on the frons. The species are described and a key is given. All breed in Picea in Canada and northern United States.

A SYNOPSIS OF THE NORTH AMERICAN SPECIES OF SYNDIPNUS (HYMEN., ICHNEUMONIDAE)

1940 ◽  
Vol 72 (7) ◽  
pp. 135-145 ◽  
Author(s):  
G. Stuart Walley
Keyword(s):  
United States ◽  
North American ◽  
The United States ◽  
North American Species ◽  
National Museum ◽  
United States National Museum ◽  
The North

As noted below the two North American species described in Syndipnus by workers appear to belong in other genrra. In Europe the gunus is represented by nearly a score of species and has been reviewed in recent years by two writers (1, 2). North American collections contain very few representatives of the genus; after combining the material in the National Collection with that from the United States National Museum, the latter kindly loaned to me by Mr. R. A. Cushman, only thirty-seven specimens are available for study.

scholarly journals Verification of Extratropical Cyclones within the NCEP Operational Models. Part I: Analysis Errors and Short-Term NAM and GFS Forecasts

2009 ◽  
Vol 24 (5) ◽  
pp. 1173-1190 ◽  
Author(s):  
Michael E. Charles ◽  
Brian A. Colle
Keyword(s):  
United States ◽  
North America ◽  
North American ◽  
Eastern Pacific ◽  
Extratropical Cyclones ◽  
Global Forecast System ◽  
Eastern United States ◽  
Forecast System ◽  
Short Term ◽  
The North

Abstract This paper verifies extratropical cyclones around North America and the adjacent oceans within the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) and North American Mesoscale (NAM) models during the 2002–07 cool seasons (October–March). The analyzed cyclones in the Global Forecast System (GFS) model, North American Mesoscale (NAM) model, and the North American Regional Reanalysis (NARR) were also compared against sea level pressure (SLP) observations around extratropical cyclones. The GFS analysis of SLP was clearly superior to the NAM and NARR analyses. The analyzed cyclone pressures in the NAM improved in 2006–07 when its data assimilation was switched to the Gridpoint Statistical Interpolation (GSI). The NCEP GFS has more skillful cyclone intensity and position forecasts than the NAM over the continental United States and adjacent oceans, especially over the eastern Pacific, where the NAM has a large positive (underdeepening) bias in cyclone central pressure. For the short-term (0–60 h) forecasts, the GFS and NAM cyclone errors over the eastern Pacific are larger than the other regions to the east. There are relatively large biases in cyclone position for both models, which vary spatially around North America. The eastern Pacific has four to eight cyclone events per year on average, with errors >10 mb at hour 48 in the GFS; this number has not decreased in recent years. There has been little improvement in the 0–2-day cyclone forecasts during the past 5 yr over the eastern United States, while there has been a relatively large improvement in the cyclone pressure predictions over the eastern Pacific in the NAM.

A REVISION OF THE NORTH AMERICAN OMALIINAE (COLEOPTERA: STAPHYLINIDAE): THE GENERA ARPEDIUM ERICHSON AND EUCNECOSUM REITTER

1984 ◽  
Vol 116 (4) ◽  
pp. 487-527 ◽  
Author(s):  
J. M. Campbell
Keyword(s):  
United States ◽  
North American ◽  
Biological Data ◽  
Eastern United States ◽  
European Species ◽  
Boreal Species ◽  
Line Drawings ◽  
The North ◽  
New Synonymy ◽  
Scanning Electron

AbstractThe North American species of the genera Arpedium Erichson, and Eucnecosum Reitter are revised. Five species are recognized, the holarctic species E. brachypterum (Gravenhorst), E. tenue (LeConte) and E. brunnescens (J. Sahlberg), the transcontinental boreal species A. cribratum Fauvel and the eastern United States species A. schwarzi Fauvel.Lectotypes are designated for E. brachypterum, A. cribratum, A. angulare Fauvel (= A. cribratum), and A. schwarzi. The following new synonymy is established, Arpedium norvegicum var. sallasi Munster and Eucnecosum meybohmi Lohse (= E. tenue) and Arpedium angulare Fauvel and A. columbiense Hatch (= A. cribratum). All genera and species are described and illustrated with scanning electron photomicrographs and line drawings, four maps showing the North American distribution of each species are provided, and keys are presented to aid in the identification of all the species as well as the European species Arpedium quadrum (Gravenhorst). All available records and biological data for the species are summarized.The use of the generic name Eucnecosum Reitter is discussed and the transfer of brachypterum, tenue, and brunnescens from Arpedium to this genus by Lohse is confirmed.

scholarly journals FOUR OCHODÆUS NEW TO THE UNITED STATES

1906 ◽  
Vol 38 (8) ◽  
pp. 269-272 ◽  
Author(s):  
Chas. Schaeffer
Keyword(s):  
United States ◽  
North American ◽  
Distinct Species ◽  
The United States ◽  
North American Species ◽  
The North

Working over some neglected material, I found, to my surprise, that the specimens of Ochodœus colleted by me last year in Arizona are separable into three distinct species, none of which agree with the descriptions of the North American species. A few years ago my brother sent me from California, with some other material, two specimens of what I take to be an Ochadœus. Unfortunately, I misplaced one of the specimens, and not wishing to dissect the single remaining one, I leave this species in this genus for the present, till more material is available.

scholarly journals THE NORTH AMERICAN SPECIES OF GNATHODUS

1896 ◽  
Vol 28 (2) ◽  
pp. 35-42 ◽  
Author(s):  
Carl F. Baker
Keyword(s):  
United States ◽  
North American ◽  
The United States ◽  
Wide Distribution ◽  
North American Species ◽  
Characteristic Appearance ◽  
The North ◽  
Apical Cells

The genus Gnathodus, as at present accepted, includes forms closely allied to Cicadula, but differing in having only two apical cells in the wing. They are of a weaker build than species of Cicadula, and a characteristic appearance from above makes them readily distinguishable from any of that genus. The species are very variable and difficult to define. They are small, more or less slender, greenish, yellowish, or whitish Jassids, usually without distinct markings. The ocelli are distant from the eyes. The clypeus usually somewhat exceeds the genæ. The ovipositor rarely exceeds the pygofers. In the United States at least, most of the species are of very wide distribution.

The North American Species of the Family Opomyzidae (Diptera: Acalypterae)

1961 ◽  
Vol 93 (7) ◽  
pp. 503-522 ◽  
Author(s):  
J. R. Vockeroth
Keyword(s):  
North America ◽  
North American ◽  
Economic Importance ◽  
North American Species ◽  
The North ◽  
The Family

The family Opomyzidae is composed of small (2.0 mm.-4.4 mm.), slender, usually brown or reddish flies; the wings have at least an apical spot and are usually more heavily marked. Several species of the genus Geomyza have the wings reduced and are nearly flightless. The few species whose larvae are known feed in grass stems. Some are of minor economic importance in Europe but none have been so reported in North America.

Seven new species of Bibloplectus Reitter (Coleoptera: Staphylinidae: Pselaphinae) from Eastern United States with notes on distributions of previously described species

Zootaxa ◽  
2017 ◽  
Vol 4243 (1) ◽  
pp. 139 ◽  
Author(s):  
BRITTANY E. OWENS ◽  
CHRISTOPHER E. CARLTON
Keyword(s):  
United States ◽  
New Species ◽  
Natural History ◽  
North American ◽  
North American Species ◽  
Eastern United States ◽  
Diagnostic Characters ◽  
Label Data ◽  
Field Museum ◽  
Distributional Information

Seven new species in the genus Bibloplectus Reitter, 1881 are described: Bibloplectus ellisi Owens and Carlton, new species; Bibloplectus levis Owens and Carlton, new species; Bibloplectus parki Owens and Carlton, new species; Bibloplectus quadratum Owens and Carlton, new species; Bibloplectus suteri Owens and Carlton, new species; Bibloplectus steevesi Owens and Carlton, new species; and Bibloplectus tishechkini Owens and Carlton, new species. New species are integrated into the previously published key, supported by illustrations of diagnostic characters, and a revised key and checklist to eastern North American species is presented. All new species described in this study were obtained from, and are deposited in, collections of the Field Museum of Natural History (FMNH). Additionally, label data for 1122 Bibloplectus specimens from the FMNH and from 111 specimens from the Louisiana State Arthropod Museum (LSAM) were combined to provide updated distributional information on existing species and note significant range extensions. 

The North American Species in Groups II and III of Ips De Geer (Coleoptera: Scolytidae)

1963 ◽  
Vol 95 (11) ◽  
pp. 1202-1210 ◽  
Author(s):  
G. R. Hopping
Keyword(s):  
United States ◽  
British Columbia ◽  
New Mexico ◽  
North American ◽  
North American Species ◽  
Western United States ◽  
Group Iii ◽  
The Third ◽  
The North ◽  
Group Ii

AbstractNorth American Ips of Group II (Hopping, 196îb) are I. emarginatus (Leconre) and I. knattsi Swaine. They are the only Ips having the third declivital spine emarginate ar the tip. They breed in various species of pine. The distribution of I. emarginatus is from southern British Columbia to California and eastward to Montana. I. knausi is found in Colorado, New Mexico and Arizona. A key to the species is given. I. plastographus (Leconte) is the sole representative of Group III. It is the only four-spined Ips with the sutures of the autennal club strongly angled at the middle. I. plastographus breeds in species of pine. It occurs from southern British Columbia southward in the western United States and through Mexico into Guatemala. Hosts and more detailed distributions are given for species in Groups IT and III.

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