A NEW HYPOSOTER (HYMENOPTERA: ICHNEUMONIDAE) FROM ORGYIA PSEUDOTSUGATA (MCD.) (LEPIDOPTERA: LYMANTRIIDAE)

1985 ◽  
Vol 117 (8) ◽  
pp. 941-947
Author(s):  
Torolf R. Torgersen
Keyword(s):  
New Species ◽  
North America ◽  
Douglas Fir ◽  
Western North America ◽  
Tussock Moth ◽  
Orgyia Pseudotsugata ◽  
A New Species ◽  
Common Parasite

AbstractA new species of Hyposoter Foerster from western North America is described based on features of the adult, final-instar cephalic structure, cocoon, and biology. Hyposoter masoni n. sp. is a common parasite of the Douglas-fir tussock moth, Orgyia pseudotsugata.

EVIDENCE OF SYNCHRONIZED CYCLES IN OUTBREAK PATTERNS OF DOUGLAS-FIR TUSSOCK MOTH, ORGYIA PSEUDOTSUGATA (McDUNNOUGH) (LEPIDOPTERA: LYMANTRIIDAE)

1988 ◽  
Vol 120 (S146) ◽  
pp. 107-121 ◽  
Author(s):  
Roy F. Shepherd ◽  
Dayle D. Bennett ◽  
John W. Dale ◽  
Scott Tunnock ◽  
Robert E. Dolph ◽  
...  
Keyword(s):  
British Columbia ◽  
North America ◽  
Single Particle ◽  
Douglas Fir ◽  
Western North America ◽  
Tussock Moth ◽  
Orgyia Pseudotsugata ◽  
Northern Idaho

AbstractOutbreak patterns of Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), over western North America historically appear to be synchronous, particularly in British Columbia, Washington, Oregon, and northern Idaho. Populations of the insect increase to outbreak and collapse in a variable cycle, averaging 9 years between peaks. A review of all outbreaks suggests repeated, widespread, nucleopolyhedrosis viral epizootics are responsible for the collapse of the population and, hence, the cycle. The virus appears to survive in the soil between outbreaks and to be carried incidentally to foliage where it is occasionally consumed by larvae. Ingestion of a single particle is probably sufficient to cause infection. Populations of the moth increase until density reaches the point where larvae to larvae infection is established. The viral inoculum builds rapidly following that point and spreads widely so that distant populations at all densities become infected, and collapse in the same year. The epizootic continues for another year. Then foliage contamination disappears, and populations reach their lowest densities before starting the cycle again.

A New Species of Pineus (Homoptera: Adelgidae) on Abies

1964 ◽  
Vol 96 (3) ◽  
pp. 522-528 ◽  
Author(s):  
G. R. Underwood ◽  
R. E. Balch
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Region ◽  
Western North America ◽  
Abies Amabilis ◽  
A New Species

AbstractA new anholocyclic species from the coastal region of western North America on Abies amabilis (Dougl.) Forbes and A. grandis (Dougl.) Lindl. is described. This is the first species of Pineus found on true firs.

scholarly journals Cranial anatomy of Allosaurus jimmadseni, a new species from the lower part of the Morrison Formation (Upper Jurassic) of Western North America

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e7803 ◽  
Author(s):  
Daniel J. Chure ◽  
Mark A. Loewen
Keyword(s):  
New Species ◽  
North America ◽  
Phylogenetic Analyses ◽  
Upper Jurassic ◽  
Morrison Formation ◽  
Ventral Margin ◽  
Western North America ◽  
Theropod Dinosaur ◽  
Theropod Dinosaurs ◽  
A New Species

Allosaurus is one of the best known theropod dinosaurs from the Jurassic and a crucial taxon in phylogenetic analyses. On the basis of an in-depth, firsthand study of the bulk of Allosaurus specimens housed in North American institutions, we describe here a new theropod dinosaur from the Upper Jurassic Morrison Formation of Western North America, Allosaurus jimmadseni sp. nov., based upon a remarkably complete articulated skeleton and skull and a second specimen with an articulated skull and associated skeleton. The present study also assigns several other specimens to this new species, Allosaurus jimmadseni, which is characterized by a number of autapomorphies present on the dermal skull roof and additional characters present in the postcrania. In particular, whereas the ventral margin of the jugal of Allosaurus fragilis has pronounced sigmoidal convexity, the ventral margin is virtually straight in Allosaurus jimmadseni. The paired nasals of Allosaurus jimmadseni possess bilateral, blade-like crests along the lateral margin, forming a pronounced nasolacrimal crest that is absent in Allosaurus fragilis.

A New Gunnel, Pholis clemensi, from the Coast of Western North America

1964 ◽  
Vol 21 (5) ◽  
pp. 933-939 ◽  
Author(s):  
Richard H. Rosenblatt
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
North American ◽  
North American Species ◽  
Western North America ◽  
The North ◽  
The Family ◽  
Juan De Fuca ◽  
A New Species

A new species, Pholis clemensi, referred to the family Pholidae, is named and described from 12 specimens taken in southern British Columbia waters and the Strait of Juan de Fuca. Pholis clemensi is compared with other members of the genus, and a key is given to the North American species.

Notes on Polychaeta from the East Coast of Vancouver Island and from Adjacent Waters, with a Description of a New Species of Aricidea

1956 ◽  
Vol 13 (4) ◽  
pp. 541-546 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley
Keyword(s):  
New Species ◽  
North America ◽  
East Coast ◽  
Vancouver Island ◽  
Western Canada ◽  
Western North America ◽  
A New Species

Records are given of two species and a variety new to western Canada and notes on three other species already known from the region. A new species, Aricidea lopezi, and four species new to western North America, are described from the neighbourhood of Friday Harbour, Washington.

A NEW SPECIES OF THE HYBOMITRA SONOMENSIS GROUP (DIPTERA: TABANIDAE) WITH DESCRIPTION OF ITS IMMATURE STAGES

1982 ◽  
Vol 114 (11) ◽  
pp. 1077-1082 ◽  
Author(s):  
H. J. Teskey
Keyword(s):  
New Species ◽  
North America ◽  
Immature Stages ◽  
Western North America ◽  
A New Species

AbstractHybomitra enigmatica n. sp., previously confused with Hybomitra sonomensis (O.S.), is described in larval, pupal, and adult stages and compared with the latter species and with H. phaenops (O.S.). Hybomitra philipi Stone is synonymized with H. sonomensis. The distribution of these species in western North America is given.

ERGASILUS NERKAE N. SP. (COPEPODA: CYCLOPOIDA) FROM BRITISH COLUMBIA WITH A DISCUSSION OF THE COPEPODS OF THE E. CAERULEUS GROUP

1963 ◽  
Vol 41 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Larry S. Roberts
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
Parasitic Copepod ◽  
Western North America ◽  
A New Species ◽  
Copepoda Cyclopoida

A new species of parasitic copepod occurring in western North America is described, Ergasilus nerkae n. sp. An emendation of E. turgidus Fraser, 1920 and a redescription of E. auritus Markevich, 1940 are presented. A total of four species resembling E. caeruleus (E. turgidus, E. confusus Bere, 1931, E. auritus, and E. nerkae) have so far been described, and characters to distinguish the species of this group are given.

A REVIEW OF THE ATYLOTUS INSUETUS GROUP FROM WESTERN NORTH AMERICA INCLUDING DESCRIPTION OF A NEW SPECIES AND IMMATURE STAGES (DIPTERA: TABANIDAE)

1983 ◽  
Vol 115 (6) ◽  
pp. 693-702 ◽  
Author(s):  
H. J. Teskey
Keyword(s):  
New Species ◽  
North America ◽  
Immature Stages ◽  
Western North America ◽  
A New Species

AbstractDescribed are adults of Atylotus insuetus (Osten Sacken), A. calcar n. sp., A. utahensis (Rowe and Knowlton) and A. tingaureus (Philip) and immature stages of the first two species. The distribution of the four species in western North America is plotted and a key is provided for their separation.

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