A review of the genus Protopiceoxylon with emphasis on North American species

1979 ◽  
Vol 57 (13) ◽  
pp. 1451-1463 ◽  
Author(s):  
David A. Medlyn ◽  
William D. Tidwell
Keyword(s):  
New Species ◽  
South Dakota ◽  
North American ◽  
Large Diameter ◽  
Upper Jurassic ◽  
North American Species ◽  
Morrison Formation ◽  
Bordered Pits ◽  
Two New Species ◽  
Resin Canals

Protopiceoxylon Gothan, a genus of Mesozoic wood, is reviewed with special emphasis on three North American species. Two new species of this genus are proposed. These are Protopiceoxylon resiniferous from the Upper Jurassic Morrison Formation of Utah and Protopiceoxylon canodense from the Upper Jurassic strata of British Columbia. Protopiceoxylon dacotense from the Lower Cretaceous(?) of South Dakota is redescribed. All species of Protopiceoxylon are compared as to their xylotomy and distribution. Nine species are considered valid. The combination of characters unique for this genus includes the occurrence of only vertically formed resin canals, abietinoid pitting of the rays, and relatively large diameter of the bordered pits on the radial walls of the tracheids. Affinity of the genus with extant Keteleeria is also considered.

THE CESTODA OF CANADIAN FISHES: II. THE HUDSON BAY DRAINAGE SYSTEM

1932 ◽  
Vol 7 (1) ◽  
pp. 377-403 ◽  
Author(s):  
ROBERT ARNOLD WARDLE
Keyword(s):  
New Species ◽  
North American ◽  
Drainage System ◽  
North American Species ◽  
Hudson Bay ◽  
Lota Lota ◽  
European Species ◽  
Two New Species ◽  
The Individual

The results are given of a survey of the cestode fauna of several thousand fishes representing thirty species common in the Hudson bay drainage system, particularly in the Hudson bay and in the larger lakes of Manitoba and Saskatchewan. The survey yielded twelve species of adult and seven species of larval cestodes, ten of which were identical with European species, while seven were purely North American. The incidence of infection was high and the individual intensity was heavy. The highest incidence and heaviest intensity occurred among nektonic types such as Hiodon, Leucichthys, Esox, Lucioperca and Salvelinus. Benthonic forms such as Catostomus, Ameiurus, Lota, Acipenser and Coregonus, were found relatively free from infection.The North American species of Cyathocephalus and Diplocotyle are regarded as identical with the European species C. truncatus and D. Olrikii; the species C. americanus Cooper, and Bothrimonus intermedius Cooper are rejected. The triaenophorid common in the area is regarded as Triaenophorus tricuspidatus (Bloch), and two morphae are recognized, microdentatus and megadentatus, the latter equivalent to T. robustus (Olsson). Bothriocephalus cuspidatus Cooper is regarded as comprising three sub-species, cuspidatus, hiodontos and luciopercae. The eubothriid cestode in Lota lota maculosa is regarded as identical with the European E. rugosum, but comprising two morphae, conformatus and deformatus. Two new species of Proteocephalus are described, namely coregoni from Coregonus atikameg, and luciopercae from Lucioperca vitreum.

New species of the rare early Eocene creodont Galecyon and the radiation of early Hyaenodontidae

2011 ◽  
Vol 85 (2) ◽  
pp. 315-336 ◽  
Author(s):  
Shawn P. Zack
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North American ◽  
Type Species ◽  
New Records ◽  
North American Species ◽  
Early Eocene ◽  
Two New Species ◽  
Stratigraphic Position ◽  
Stratigraphic Range

Galecyon is one of the first appearing hyaenodontid creodonts, as well as one of the most poorly known. New specimens greatly improve our understanding of the morphology of this early Eocene genus, thereby enhance knowledge of the earliest radiation of Hyaenodontidae, and include the first associated upper dental remains, as well as fragmentary cranial remains. The new records substantially expand the stratigraphic range of the genus and allow recognition of two new species. The first, Galecyon peregrinus n. sp., is a small, early species that includes the first records of Galecyon from the earliest Eocene Wa-0 interval. The second, Galecyon chronius n. sp., is a large, terminal species, represented by numerous specimens that extend the range of the genus into the late Wasatchian. The type species, G. mordax, is restricted to specimens that are intermediate in size and stratigraphic position. Phylogenetic analysis of early hyaenodontids confirms the monophyly of Galecyon and places it basal to Prolimnocyon, Prototomus, and Pyrocyon. Arfia is identified as the earliest diverging hyaenodontid sampled, contrasting with prior support for a more crownward position. Prototomus martis is more closely allied to Pyrocyon than to other species of Prototomus. The three North American species of Galecyon form a probable anagenetic lineage.

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.

TWO NEW SPECIES OF BOLBOCEROSOMA WITH NOTES ON THE HABITS AND GENITALIA OF OTHER SPECIES.

1928 ◽  
Vol 60 (8) ◽  
pp. 192-196 ◽  
Author(s):  
W. J. Brown
Keyword(s):  
New Species ◽  
North American ◽  
North American Species ◽  
The North ◽  
Two New Species

The purpose of the present paper is to describe two new species of Bolbocerosoma and to figure the genitalia of the North American species of this genus. It therefore supplements the paper of Dawson and McColloch (Can. Ent., LVI, 9-15).

The genus Ectemnia (Diptera: Simuliidae): taxonomy, polytene chromosomes, new species, and phylogeny

1997 ◽  
Vol 75 (11) ◽  
pp. 1896-1915 ◽  
Author(s):  
J. K. Moulton ◽  
P. H. Adler
Keyword(s):  
New Species ◽  
Coastal Plain ◽  
North American ◽  
Sex Chromosome ◽  
Polytene Chromosomes ◽  
North American Species ◽  
Immature Stages ◽  
Two New Species ◽  
Southeastern Coastal Plain

The genus Ectemnia Enderlein consists of four North American species, two of which are described as new. The two previously described species, E. invenusta and E. taeniatifrons, are primarily northern in distribution and their immature stages occupy rocky rivers. The two new species, E. primaeva and E. reclusa, occur in the southeastern Coastal Plain; their immature stages inhabit blackwater swamp streams and sandy rivers. Keys are provided for larvae, pupae, and adults. The polytene chromosomes of all species are analyzed in detail. Seven fixed inversions, 10 unshared autosomal polymorphisms, two centromere-band expressions, and five sex-chromosome systems are recognized among the four species. At least 10 synapomorphies indicate that the genus is monophyletic. Phylogenetically, Ectemnia is in a clade with Metacnephia and Simulium.

A review of the North American species of Hemipenthes Loew, 1869 (Diptera: Bombyliidae)

Zootaxa ◽  
2009 ◽  
Vol 2074 (1) ◽  
pp. 1-49 ◽  
Author(s):  
OMAR ÁVALOS-HERNÁNDEZ
Keyword(s):  
New Species ◽  
North American ◽  
North American Species ◽  
Type Locality ◽  
The North ◽  
Two New Species

Twenty-three North American species of the genus Hemipenthes Loew are reviewed. Two new species are described (type locality in parentheses): Hemipenthes albus (Mexico, Zacatecas: 25 mi NW Zacatecas), n. sp. and H. translucens (Mexico, Morelos: Quilamula), n. sp. The following synonymies were founded: H. eumenes (Osten Sacken, 1886) is a synonym of H. seminigra Loew, 1869, n. syn.; H. floridiana (Macquart, 1850), H. pima (Painter, 1962), and H. sagata (Loew, 1869 are synonyms of H. celeris (Wiedemann, 1828), n. syns. Evidence presented here shows that H. morio (Linnaeus, 1758) has a Palearctic distribution, not Holarctic as had been considered. Chrysanthrax yaqui (Painter, 1962) is transferred from Villa, n. comb.

A Synopsis of the westermanni Group of the Genus Euxoa Hbn. (Lepidoptera: Noctuidae) With Descriptions of Two New Species

1966 ◽  
Vol 98 (7) ◽  
pp. 760-768 ◽  
Author(s):  
D. F. Hardwick
Keyword(s):  
British Columbia ◽  
New Species ◽  
North American ◽  
North American Species ◽  
Southern Alberta ◽  
Two New Species ◽  
Lepidoptera Noctuidae

AbstractThe westermanni group of the genus Euxoa is defined, and a key to the eleven constituent North American species is presented. Two species are described as new: chimoensis from Fort Chimo, Quebec, and luteomaculata from montane areas of southern Alberta, southern British Columbia, and northern Washington.

NEW NORTH AMERICAN SPECIES OF HOMONEURA WULP. (DIPTERA, LAUXANIIDAE)

1939 ◽  
Vol 71 (12) ◽  
pp. 264-266 ◽  
Author(s):  
G. E. Shewell
Keyword(s):  
New Species ◽  
North American ◽  
North American Species ◽  
Two New Species

Representatives of two new species of Homoneura from South Dakata were recently sent to me for description by Mr. George Steyskal of Detroit. Examination of unnamed material in the National Collection showed that these two species were also represented by Canadian material.

NORTH AMERICAN WATER MITES OF THE GENERA PHREATOBRACHYPODA COOK AND BHARATALBIA COOK (ACARI: HYGROBATOIDEA: ATURENAE)

1991 ◽  
Vol 123 (3) ◽  
pp. 465-499 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
New Species ◽  
North America ◽  
North American ◽  
Hyporheic Zone ◽  
North American Species ◽  
Southern Limit ◽  
Male And Female ◽  
The North ◽  
Two New Species ◽  
First Time

AbstractMorphological and distributional data are presented for the North American species of the genera Phreatobrachypoda Cook, 1963 and Bharatalbia Cook, 1967. These mites live in gravel deposits associated with riffle areas and the hyporheic zone of streams. Female adults of Phreatobrachypoda multlpora Cook are redescribed, and males of this species are described for the first time. Adults of P. robusta Cook and P. acuta Habeeb are redescribed, and males and females of these two species are correctly correlated for the first time. Male and female adults of two new species of Phreatobrachypoda are described. The male mite described as Japonaxonopsis nuiakiensis Imamura is reassigned to Phreatobrachypoda, and the name Japonaxonopsis becomes a junior synonym of Phreatobrachypoda. Two subgenera, Phreatobrachypoda (s.s.) and Ameribrachypoda subgen.nov., are proposed and diagnosed based on the morphology of the dorsal shield, genital field, and fourth pair of legs of males. A key to known species of die genus is presented. Male and female adults of two new species of Bharatalbia (Japnnalbia) are described, and the deutonymph of one of these species is correlated with adults and described. This is the first reported occurrence of this genus in North America.All North American species of Phreatobrachypoda and Bharatalbia inhabit coastal areas in Oregon and California. The highly disjunct distributions of these genera suggest that species of both were widespread throughout western North America and eastern Eurasia during the Tertiary Era, but survived the Pleistocene only in isolated temperate refugia well beyond the southern limit of glaciers.

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