Tricholoma, subgenus Tricholoma, section Albidogrisea: North American species found principally in the Great Lakes region

1989 ◽  
Vol 67 (11) ◽  
pp. 3134-3152 ◽  
Author(s):  
Clark L. Ovrebo
Keyword(s):  
North America ◽  
Great Lakes ◽  
North American ◽  
North American Species ◽  
Eastern North America ◽  
Great Lakes Region

Fifteen species of Tricholoma, subgenus Tricholoma, section Albidogrisea, are described and illustrated. All species occur in the Great Lakes region and many are distributed elsewhere in eastern North America. Four species are new: Tricholoma argenteum, Tricholoma atrodiscum, Tricholoma insigne, and Tricholoma pullum. Keys are provided to the sections of subg. Tricholoma and to the species and stirpes of sect. Albidogrisea.

A review of the Thaumaleidae (Diptera: Culicomorpha) of eastern North America, including a redefinition of the genus Androprosopa Mik

1996 ◽  
Vol 27 (4) ◽  
pp. 361-376 ◽  
Author(s):  
Bradley J. Sinclair
Keyword(s):  
North America ◽  
North American ◽  
New Records ◽  
Instar Larva ◽  
North American Species ◽  
Eastern North America ◽  
Adult Males

AbstractThe genus Androprosopa Mik (Diptera: Thaumaleidae) is redefined and expanded to include 51 species. Adult, pupa, and final-instar larva of the eastern North American species of Androprosopa americana (Bezzi) comb. n., A. thornburghae (Vaillant) comb. n., A. vaillantiana sp. n., and Thaumalea verralli Edwards (new Nearctic record) are described and illustrated. New records of Trichothaumalea elakalensis Sinclair also are provided. Keys to adult males, pupae, and larvae for all five eastern Nearctic species are included.

Morphological and molecular delineation of a new species in the Ceratina dupla species-group (Hymenoptera: Apidae: Xylocopinae) of eastern North America

Zootaxa ◽  
2011 ◽  
Vol 2873 (1) ◽  
pp. 35 ◽  
Author(s):  
SANDRA M. REHAN ◽  
CORY S. SHEFFIELD
Keyword(s):  
New Species ◽  
North America ◽  
North American ◽  
Dna Barcode ◽  
Species Group ◽  
North American Species ◽  
Eastern North America ◽  
Separate Species ◽  
Carpenter Bees ◽  
A New Species

DNA barcoding is used to verify characters to morphologically differentiate genetically distinct species of eastern North American small carpenter bees, Ceratina. Here we reveal that the common eastern North American species, Ceratina dupla s. l., is actually three separate species based on fixed differences in DNA barcode sequences and morphological characters. This study adds a new species, C. mikmaqi Rehan & Sheffield, to the Ceratina dupla species-group of eastern North America, and raises another form, C. floridana formerly C. dupla floridana, to full species. Temporal niche partitioning between C. dupla and C. mikmaqi and geographic isolation of C. floridana further support the division of the C. dupla s. l. group into three species. A diagnosis and description of the new species are provided, as is a key for eastern North American species of Ceratina.

A REARRANGEMENT OF THE NORTH AMERICAN SPECIES OF CLUBIONA, WITH DESCRIPTIONS OF TWO NEW SPECIES (ARANEIDA: CLUBIONIDAE)

1976 ◽  
Vol 108 (11) ◽  
pp. 1155-1165 ◽  
Author(s):  
C. D. Dondale ◽  
J. H. Redner
Keyword(s):  
New Species ◽  
North America ◽  
North American ◽  
North American Species ◽  
Eastern North America ◽  
The North ◽  
Two New Species ◽  
Species Groups ◽  
Group 2 ◽  
Group 1

AbstractThe 50 known species of North American Clubiona Latreille, 1804 are rearranged in seven species-groups as follows: trivialis group (1 Holarctic, 4 Nearctic), obesa group (11 Nearctic), reclusa group (2 Holarctic, 3 Nearctic), pallidula group (1 Holarctic), abboti group (25 Nearctic), lutescens group (1 Holarctic, 1 Nearctic), maritima group (1 Nearctic). Clubiona quebecana and C. angulata are described as new species from eastern North America. C. kuratai Roddy, 1966, originally described from the female only, is synonymized under C. chippewa Gertsch, 1941, which was originally described from the male only. C. opeongo Edwards, 1958 and C. bishopi Edwards, 1958 are redescribed, the male of the former and the female of the latter not having been previously described.

Melaspilea demissa(Tuck.) Zahlbr. (lichenized Ascomycota) in eastern North America with a key to North American species ofMelaspileas. lat.

2015 ◽  
Vol 47 (3) ◽  
pp. 167-182 ◽  
Author(s):  
Gary B. Perlmutter ◽  
Shirley C. Tucker ◽  
Eimy Rivas Plata ◽  
Philippe Clerc ◽  
Robert Lücking
Keyword(s):  
North America ◽  
North American ◽  
Taxonomic Status ◽  
North American Species ◽  
Eastern North America ◽  
Type Collection ◽  
South Eastern ◽  
The North ◽  
Eastern Usa ◽  
Original Treatment

AbstractRecently collected specimens of the crustose lichenMelaspilea demissafrom south-eastern USA have been compared with those ofMelaspileaspp. previously determined from North America. A review of both the historical and contemporary treatments of this species is provided. A lectotype was selected from the type collection ofM. demissain FH and is here proposed as it best matches incomplete citations in the original treatment. We also discuss the nomenclatural and taxonomic status of the nameOpegrapha cymbiformisvar.deformis(considered a synonym ofM. gibberulosa). North American specimens ofM. gibberulosawere found to be misidentifications, as were specimens attributed toM. lentiginosula,M. mesophlebiaandM. octomera. We therefore recommend that these species be removed from the North American lichen checklist. We also present a key to North AmericanMelaspilea.

scholarly journals Spatially explicit analysis sheds new light on the Pleistocene megafaunal extinction in North America

Paleobiology ◽  
2017 ◽  
Vol 43 (4) ◽  
pp. 642-655 ◽  
Author(s):  
Meaghan M. Emery-Wetherell ◽  
Brianna K. McHorse ◽  
Edward Byrd Davis
Keyword(s):  
North America ◽  
Great Lakes ◽  
Human Activity ◽  
Late Pleistocene ◽  
North American ◽  
Human Populations ◽  
Great Lakes Region ◽  
Radiocarbon Dates ◽  
The North ◽  
Primary Driver

AbstractThe late Pleistocene megafaunal extinctions may have been the first extinctions directly related to human activity, but in North America the close temporal proximity of human arrival and the Younger Dryas climate event has hindered efforts to identify the ultimate extinction cause. Previous work evaluating the roles of climate change and human activity in the North American megafaunal extinction has been stymied by a reliance on geographic binning, yielding contradictory results among researchers. We used a fine-scale geospatial approach in combination with 95 megafaunal last-appearance and 75 human first-appearance radiocarbon dates to evaluate the North American megafaunal extinction. We used kriging to create interpolated first- and last-appearance surfaces from calibrated radiocarbon dates in combination with their geographic autocorrelation. We found substantial evidence for overlap between megafaunal and human populations in many but not all areas, in some cases exceeding 3000 years of predicted overlap. We also found that overlap was highly regional: megafauna had last appearances in Alaska before humans first appeared, but did not have last appearances in the Great Lakes region until several thousand years after the first recorded human appearances. Overlap in the Great Lakes region exceeds uncertainty in radiocarbon measurements or methodological uncertainty and would be even greater with sampling-derived confidence intervals. The kriged maps of last megafaunal occurrence are consistent with climate as a primary driver in some areas, but we cannot eliminate human influence from all regions. The late Pleistocene megafaunal extinction was highly variable in timing and duration of human overlap across the continent, and future analyses should take these regional trends into account.

scholarly journals Cortinarius subgenus Leprocybe, unexpected diversity and significant differences in species compositions between western and eastern North America

2021 ◽  
Author(s):  
J. Ammirati ◽  
K. Liimatainen ◽  
D. Bojantchev ◽  
U. Peintner ◽  
R. Kuhnert-Finkernagel ◽  
...  
Keyword(s):  
North America ◽  
North American ◽  
Molecular Data ◽  
North American Species ◽  
Eastern North America ◽  
Type Specimens ◽  
European Species ◽  
The North ◽  
Morphological And Molecular Data

The focus of this paper is the North American species of Cortinarius in subg. Leprocybe. Eighteen species, including twelve new ones, and two tentative (aff.) species, are delimited based on morphological and molecular data (DNA ITS-LSU sequences). Existing type specimens of species in subg. Leprocybe were also studied, and neo- or epitypes designated for C. cotoneus, C. melanotus, C. phrygianus and C. venetus to stabilize the nomenclature. In addition, to improve the infrasubgeneric classification of Leprocybe three new sections are proposed: sect. Fuscotomentosi, sect. Melanoti and sect. Squamiveneti. This study adds substantial information to the knowledge of subg. Leprocybe in North America against a background of European species. To date only two species, C. phrygianus and C. squamivenetus have been reported from both continents.

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