scholarly journals Xerocomellus (Boletaceae) in western North America

2020 ◽  
Vol 6 (1) ◽  
pp. 265-288
Author(s):  
J.L. Frank ◽  
N. Siegel ◽  
C.F. Schwarz ◽  
B. Araki ◽  
E.C. Vellinga
Keyword(s):  
North America ◽  
Morphological Variability ◽  
Morphological Data ◽  
Eastern North America ◽  
New Combinations ◽  
Western North America ◽  
Key To Species ◽  
Dichotomous Key ◽  
Species Complexes ◽  
Three New Species

Understanding diversity in the genus Xerocomellus in western North America has been obscured by morphological variability, widespread use of species epithets typified by specimens from Europe and eastern North America, misunderstood phylogenetic relationships, and species complexes. We collected extensively and used genetic and morphological data to establish the occurrence of ten Xerocomellus species in western North America. We generated ITS sequences from five type collections and from vouchered representative collections to clarify our understanding of existing species concepts. We describe three new species (Xerocomellus atropurpureus, X. diffractus, and X. salicicola) and propose two new combinations (X. amylosporus and X. mendocinensis), transfer Boletus coccyginus to Hortiboletus, and provide a dichotomous key to species of Xerocomellus in western North America.

A taxonomic revision of Crataegus (Rosaceae) in Ontario

1980 ◽  
Vol 58 (15) ◽  
pp. 1621-1699 ◽  
Author(s):  
J. B. Phipps ◽  
M. Muniyamma
Keyword(s):  
North America ◽  
Taxonomic Revision ◽  
Diagnostic Value ◽  
Eastern North America ◽  
New Combinations ◽  
Key To Species ◽  
Line Drawings ◽  
Hybrid Swarms ◽  
Variation Patterns ◽  
Range Of Variation

This taxonomic revision of Ontario Crataegus (Rosaceae) indicates the presence of 39 good species in 14 series in the province. This appears to represent about one-third of the taxa of North American Crataegus. Additionally, six "little-known" species are briefly described. The reasons for taxonomic difficulty in Crataegus in eastern North America are fully discussed and attention is drawn to the care with which specimens must be collected and the characteristics known to be of diagnostic value. A key to and descriptions of the series are provided. A key to species is followed by descriptions of each. Line drawings of 25 species at anthesis are provided to indicate the range of variation in Ontario Crataegus and to underline discriminating features. This is the only pictorial record of this detail for Ontario Crataegus. Thirty-two colour figures emphasize the differences among fruiting Crataegus, which have hitherto caused much confusion to collectors. Thirty-five species are mapped for their Ontario distribution and exemplar specimens are cited for all taxa. Seven new combinations have been made. Our species concepts are not consistent because of the range of variation patterns found in the genus, from ordinary sexual outbreeders through polytypic forms with various cytotypes to situations where hybrid swarms may be suspected. The taxonomic situation is known to be complicated by apomixis and polyploidy.

scholarly journals Three new species of Glossobalanus (Hemichordata: Enteropneusta: Ptychoderidae) from western North America

Zootaxa ◽  
2013 ◽  
Vol 3630 (1) ◽  
pp. 143-154 ◽  
Author(s):  
CHRISTOPHER B. CAMERON ◽  
ANGÉLICA OSTIGUY
Keyword(s):  
New Species ◽  
North America ◽  
West Coast ◽  
Western North America ◽  
Salish Sea ◽  
The West ◽  
Additional Species ◽  
Dichotomous Key ◽  
The Family ◽  
Three New Species

Twenty three enteropneust species have been described from the west coast of North America, including one species from the family Ptychoderidae, Glossobalanus berkeleyi from the Salish Sea, Vancouver Island. Here we use morphology to describe three additional species of acorn worms in the genus Glossobalanus: G. williami from Cape Arago, Oregon; G. hartmanae and G. barnharti fromLa Jolla,California. Notes on the habit and localization of each species as well as a dichotomous key to the genera of the family Ptychoderidae are provided.

New Protosmylinae (Neuroptera: Osmylidae) from the early Eocene of western North America, with taxonomic remarks

Zootaxa ◽  
2021 ◽  
Vol 4980 (1) ◽  
pp. 142-156
Author(s):  
VLADIMIR N. MAKARKIN ◽  
S. BRUCE ARCHIBALD ◽  
ROLF W. MATHEWES
Keyword(s):  
North America ◽  
Hind Wing ◽  
Late Eocene ◽  
Early Eocene ◽  
Western North America ◽  
Green River ◽  
Incertae Sedis ◽  
Three New Species ◽  
Okanagan Highlands ◽  
Provincial Park

The osmylid subfamily Protosmylinae is revised based on our emended diagnosis: Petrushevskia Martynova, 1958 and Mesosmylidus Jepson et al., 2012 are excluded (both considered Osmylidae incertae sedis), and Sogjuta Martynova, 1958 is transferred to it from the Mesosmylininae. The late Eocene genus Protosmylus Krüger, 1913 is considered a junior synonym of Osmylidia Cockerell, 1908 based on a distinct apomorphy (deeply forked MA in the hind wing), syn. nov. Three new species of Osmylidia from the early Eocene of North America are described: O. donnae sp. nov. from Quilchena, O. glastrai sp. nov. from Republic, Washington, USA, and an unnamed species of Osmylidia is reported from Driftwood Canyon Provincial Park, British Columbia (all localities of the Okanagan Highlands series), and O. taliae sp. nov. from the Green River Formation of Colorado, USA. 

High-Frequency Seismic Wave Propagation in Northeastern North America

1990 ◽  
Vol 61 (3-4) ◽  
pp. 193-208 ◽  
Author(s):  
S. E. Hough ◽  
K. H. Jacob ◽  
L. Seeber
Keyword(s):  
North America ◽  
High Frequency ◽  
Characteristic Length ◽  
Body Waves ◽  
Eastern North America ◽  
Western North America ◽  
Energy Propagation ◽  
Length Scales ◽  
Near Surface ◽  
High Frequencies

Abstract A key element in the assessment of seismic hazard is the estimation of how energy propagation from a given earthquake is affected by crustal structure near the receiver and along the more distant propagation path. In this paper, we present data from a variety of sources in eastern North America recorded at epicentral distances of a few to 800 km, and characterize and interpret systematic features. Site effects have been classically considered in terms of amplification either within a sediment-filled valley or from a single topographic feature (Geli et al., 1988). We present evidence of high frequency (5–30 Hz) resonances observed in hard-rock recordings of both body waves and Lg waves, and suggest that site effect should be expanded regionally to include structural and topographic information over sufficiently large areas to include several wavelengths of any features that may interact with seismic waves in the frequency range of interest. A growing body of evidence suggests that ground motions at high frequencies recorded at large epicentral distances in eastern North America are controlled by resonance effects. We hypothesize that a fundamental difference between eastern and western North America spectra stems from a combination of differences in the character of topography and near-surface structure. Active tectonics of western North America gives rise to a complex crust that scatters seismic energy in a random manner and results in very effective attenuation of high frequencies. The older eastern North American crust contains scatterers that are more ordered, with characteristic length scales that give rise to resonance phenomena in the frequency band critical for earthquake hazard. We present preliminary analysis of topographic data from the Adirondack Mountains in New York that demonstrates the existence of characteristic length scales on the order of up to 1–3 kilometers. Features with these length scales will effectively scatter energy at frequencies in the 1 to 10 Hz range.

A revision of the genus Orchestia Leach, 1814 with the reinstatement of O. inaequalipes (K.H. Barnard, 1951), the designation of a neotype for Orchestia gammarellus (Pallas, 1776) and the description of three new species (Crustacea: Amphipoda: Talitridae: Talitrinae)

Zootaxa ◽  
2020 ◽  
Vol 4808 (2) ◽  
pp. 201-250
Author(s):  
ALAN A. MYERS ◽  
JAMES K. LOWRY
Keyword(s):  
New Species ◽  
North America ◽  
South America ◽  
Type Species ◽  
Pacific Coast ◽  
Species Group ◽  
Eastern North America ◽  
The Pacific ◽  
North Eastern ◽  
Three New Species

The amphipod genus Orchestia is revised. It now includes 10 species of which three are new: O. forchuensis sp. nov. from north-eastern North America and Iceland., O. perezi sp. nov. from Chile and O. tabladoi sp. nov. from Argentina. Orchestia inaequalipes (K.H. Barnard 1951) is reinstated. The type species of the genus, O. gammarellus is redescribed based on material from Fountainstown, Ireland and a neotype is established to stabilize the species. The species was originally described from a garden in Leiden, far from the sea. Its true identity is unknown and no type material exists. Orchestia gammarellus (Pallas, 1776) is shown to be a sibling species group with members in both hemispheres of the temperate Atlantic as well along the Pacific coast of South America. A hypothesis for the establishment of the current distribution of Orchestia species is presented that extends back to the Cretaceous. 

Revision of the North American Genera Tetracis Guenée and Synonymization of Synaxis Hulst with Descriptions of Three New Species (Lepidoptera: Geometridae: Ennominae)

Zootaxa ◽  
2010 ◽  
Vol 2347 (1) ◽  
pp. 1 ◽  
Author(s):  
CLIFFORD D. FERRIS ◽  
B.CHRISTIAN SCHMIDT
Keyword(s):  
New Species ◽  
North American ◽  
Western North America ◽  
Check List ◽  
Key To Species ◽  
Additional Species ◽  
Distribution Maps ◽  
The North ◽  
Three New Species ◽  
Species Descriptions

The genus Synaxis is synonymized with Tetracis. The thirteen North American species in genus Tetracis (some formerly in Synaxis) are discussed, including descriptions of three new species from western North America: Tetracis australis, T. montanaria, T. pallidata. Two additional species, “Synaxis” triangulata and “S.” brunneilinearia are excluded. A key to species, descriptions, check list, illustrations of adults and genitalia, and distribution maps are included. The formerly presumed lost types of the taxa aurantiacaria, cervinaria, and jubararia were located and are illustrated.

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