Chromosome Numbers in Some North American Species of the Genus cirsium. III. Western United States, Mexico, and Guatemala

Brittonia ◽  
1975 ◽  
Vol 27 (4) ◽  
pp. 297 ◽  
Author(s):  
Gerald B. Ownbey ◽  
Peter H. Raven ◽  
Donald W. Kyhos
Keyword(s):  
United States ◽  
North American ◽  
Chromosome Numbers ◽  
North American Species ◽  
Western United States ◽  
United States Mexico

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.

NORTH AMERICAN SPECIES OF NEOMAMERSINAE LUNDBLAD (ACARI: HYDRACHNIDA: LIMNESIIDAE)

1994 ◽  
Vol 126 (5) ◽  
pp. 1131-1184 ◽  
Author(s):  
Ian M. Smith ◽  
David R. Cook
Keyword(s):  
United States ◽  
North American ◽  
Environmental Changes ◽  
Taxonomic Diversity ◽  
The United States ◽  
North American Species ◽  
Western United States ◽  
Southwestern United States ◽  
Distribution Maps ◽  
The Impact

AbstractMorphological, distributional, and habitat data are presented for North American species of the three genera of the subfamily Neomamersinae, Neomamersa Lundblad, 1953, Arizonacarus gen.nov., and Meramecia Cook, 1963. Neomamersa lundbladi lundbladi Cook, N. lundbladi paucipora Cook, and N. hexapora Cook are redescribed based on examination of types and newly collected specimens, and six new species of Neomamersa from the United States are described, namely N. boultoni sp.nov., N. psammicola sp.nov., N. californica sp.nov., N. chihuahua sp.nov., N. neomexicana sp.nov., and N. cramerae sp.nov. Arizonacarus chiricahuensis gen.nov., sp.nov. is described from the southwestern United States. Meramecia (Meramecia) anisitsipalpis (Cook), M. (Meramecia) perplexa (Cook), and M. (Meramecia) ocularis (Cook) are redescribed based on study of types and newly collected specimens, and M. (Meramecia) occidentalis sp.nov. is described from the western United States. Meramecia (Parameramecia) multipora subgen.nov., sp.nov. is also described from the southwestern United States. Revised diagnoses, keys, and distribution maps are presented for all North American taxa. Phylogenetic relationships of Neomamersinae are discussed, leading to the conclusion that comprehensive reassessment of the families Limnesiidae and Anisitsiellidae is warranted. Consideration of available phylogenetic and distributional data suggests that Neomamersinae originated in Gondwanaland before the separation of India from the rest of the southern supercontinent. Subsequently, the clade evolved and diversified extensively in South America. Neomamersinae apparently first entered North America either by crossing a "filter bridge" during late Cretaceous, Paleocene, or Miocene times or by traversing the corridor established with the formation of the Panamanian Isthmus during the late Pliocene. The group exhibits considerable taxonomic diversity in hyporheic and groundwater habitats in the United States, and the various species represent potentially useful indicators of water quality and the impact of environmental changes on freshwater communities.

scholarly journals New species of Allomyia Banks from the Western United States (Trichoptera: Apataniidae)

Zoosymposia ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. 273-288
Author(s):  
DAVID E. RUITER ◽  
HIROYUKI NISHIMOTO
Keyword(s):  
United States ◽  
New Species ◽  
High Altitude ◽  
North American ◽  
Adult Emergence ◽  
North American Species ◽  
Western United States ◽  
Mountain Ranges

Six new Allomyia species from the western United States are described: Allomyia kondratieffi sp. nov., Allomyia leei sp. nov., Allomyia meachamensis sp. nov., Allomyia sarahae sp. nov., Allomyia sheldoni sp. nov., Allomyia whatcomensis sp. nov. The majority of these species were collected from small headwater, high altitude streams on relatively isolated mountain ranges. These species bring the number of known North American Allomyia to 18. Additional notes on state/county distribution records, taxonomic problems, species diagnostics and adult emergence periods for the 18 North American species are provided.

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.

CYTOTAXONOMY, PHYLOGENY, AND CANADIAN DISTRIBUTION OF CIRSIUM UNDULATUM AND CIRSIUM FLODMANII

1961 ◽  
Vol 39 (1) ◽  
pp. 21-33 ◽  
Author(s):  
C. Frankton ◽  
R. J. Moore
Keyword(s):  
North American ◽  
Chromosome Numbers ◽  
World Wide ◽  
North American Species ◽  
Base Number ◽  
Total Length ◽  
The World ◽  
Cirsium Undulatum

The morphology and specific differences of Cirsium undulatum (Nutt.) Spreng. and of C. flodmanii (Rydb.) Arthur are described and their Canadian distributions are reported in detail. The chromosome numbers are C. undulatum f. undulatum and f. album Farwell, 2n = 26; C. flodmanii f. flodmanii and f. albiflorum D. Löve, 2n = 22. The origin of four North American species of Cirsium that do not follow the world-wide base number 17 is discussed; it is postulated that reduction in number has occurred by translocations. The chromosomes of species with reduced numbers are larger than those of the unreduced species but the total length of the chromosomes of both groups is approximately the same.

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.

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.

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