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Tuesday, November 3, 2020 | History

3 edition of Douglas-fir tussock moth Hemerocampa pseudotsata (McDunnough) found in the catalog.

Douglas-fir tussock moth Hemerocampa pseudotsata (McDunnough)

D. Brian Walters

Douglas-fir tussock moth Hemerocampa pseudotsata (McDunnough)

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Published by Huxley College of Environmental Studies, Western Washington State College in Bellingham, Wash .
Written in English


Edition Notes

Includes bibliographical references (leaves 21-23).

StatementD. Brian Walters.
Series[Problem series], Problem series (Huxley College of Environmental Studies)
The Physical Object
Pagination23 leaves ;
Number of Pages23
ID Numbers
Open LibraryOL13634316M
OCLC/WorldCa56958704


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Douglas-fir tussock moth Hemerocampa pseudotsata (McDunnough) by D. Brian Walters Download PDF EPUB FB2

DOUGLAS-FIR TUSSOCK MOTH (HEMEROCAMPA PSEUDOTSUGATA) EGG-MASS DISTRIBUTION ON WHITE FIR IN NORTHEASTERN CALIFORNIA [Robert F & Dahlsten, Donald L Luck] on *FREE* shipping on qualifying : Donald L Luck, Robert F & Dahlsten.

DISTRIBUTION AND Douglas-fir tussock moth Hemerocampa pseudotsata book OF COCOONS OF THE DOUGLAS-FIR TUSSOCK MOTH, HEMEROCAMPA PSEUDOTSUGATA (LEPIDOPTERA: LYMANTRIIDAE), IN AN ISOLATED INFESTATION Paperback – January 1, by et al Dahlsten, Donald L.

(Author)Author: et al Dahlsten, Donald L. Douglas-fir Tussock Moth Orgyia pseudotsugata Key Wildlife Value: The Douglas-fir tussock moth creates snags and down wood by severely defoliating and causing the Douglas-fir tussock moth Hemerocampa pseudotsata book of all sizes of true fir and Douglas-fir trees.

It also interacts with other disturbance agents, especially bark beetles, to cause host tree mortality. The Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), is a common defoliator of fir in the interior forests of western North by: In1 yr after DDT was sprayed to control the tussock moth (Orgyia [Hemerocampa] pseudotsugata), data were collected from interviews with summer visitors, deer and elk hunters, persons who had hunted in previous years, owners of private recreation businesses and land management agency personnel.

There was little evidence of significant or long term influence of tussock moth Author: K. Downing, P. Delucchi, W. Williams. JOURNAL OF INVERTEBRATE PATHOL () A Candidiasis in Larvae of the Douglas-fir Tussock Moth, Hemeroeampa pseudotsugata The occurrence of yeasts in insects is well documented (E.

Steinhaus, "Insect Microbiology," Cornell Univ. Press (Comstock) Ithaca, New York, pp., ).Cited by: 5. Hosts: Douglas-fir, white fir and spruce Figure 8.

Adult male (left) and femail (right) Douglas-fir moth. Symptoms/Signs: The caterpillar of the Douglas-fir tussock moth is grayish with brightly colored tufts of hair and a shiny black are also two long horns of black hairs behind the head and another at the rear of the body. Successful management of the Douglas-fir tussock moth depends on carefully monitoring populations within high-hazard stands during the non-outbreak and building phases.

Once an outbreak begins, viable treatment options decrease significantly. The Douglas-fir tussock moth is a native defoliator of Douglas-fir, true firs (such as grand fir) and spruce.

For reasons unknown, a year or two prior to an outbreak of Douglas-fir tussock moth on forested land, we tend to see defoliation of. INTRODUCTION Outbreaks of the Douglas-fir tussock moth, Orgyia pseudotsugata, have occurred at intervals of about years in western North America. Most outbreaks have occurred east of the Cascade Mountains.

In the northern part of the tussock moth's range, outbreaks take place on Douglas-fir, Pseudotsuga menziesii, by: The Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), is an important defoliator of spruce, Douglas-fir, true fir and other conifers in the Rocky Mountain region.

Feeding by the larvae can cause complete defoliation of heavily infested trees. Tussock moth, (family Lymantriidae), any of a group of moths (order Lepidoptera), the common name for which is derived from the hair tufts, or tussocks, found on most larval family, which occurs in both Eurasia and the New World, includes several species that are destructive to shade and forest trees: the gypsy moth (q.v.; Lymantria dispar), browntail moth (Nygmia.

The Douglas-fir tussock moth is a native insect in the low-lying, dry belt Douglas-fir regions of southern British Columbia. It is not an introduced species. It feeds primarily on Douglas-fir, and occasionally on ponderosa pine and western larch.

Ornamental spruce and pine may also be affected in urban. The Douglas-fir tussock moth (Orgyia pseudotsugata McDunnough) defoliated Douglas-fir (Pseudotsuga menziesii var glauca [Beissn.] Franco), in British Columbia from to Tussock Moths - Family Lymantriidae This page contains pictures and information about Tussock Caterpillars and Moths that we found in the Brisbane area, Queensland, Australia.

Tussock Moth Caterpillar The LYMANTRIIDAE Caterpillars are usually hairy, often with four distinct tussocks of hair on their back make them look like a toothbrush.

Moth Books. Concise Guide to the Moths of Great Britain Martin Townsend and Paul Waring (Illustrated by Richard Lewington) British Pyralid Moths Barry Goater (Illustrated by Geoffrey Senior and Robert Dyke) Moths of Europe Volume 2 Patrice Leraut; Moths of Europe Volume 1 Patrice Leraut; Britain's Day-flying Moths David Newland, Robert Still.

deals in some way with either the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), or a related species. Specifically, publications and 82 unpublished documents make some reference, at least, to the Douglas-fir tussock moth; 55 are concerned with other species in the same genus.

Douglas-fir Tussock Moth Control by the Homeowner The Douglas-fir tussock moth, Orgyia pseuclot-sugata, is one of the most injurious insect pests of Douglas-fir and true firs found in the West. Out-breaks may develop explosively and when they do, the caterpillars will attack less preferred species such as pine, larch, spruce, and other species.

Collapse of an outbreak population of the douglas-fir tussock moth, Hemerocampa pseudotsugata (Lepidoptera: Lymantriidae). Portland, Or.: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, [] (OCoLC) Material Type: Government publication, National government publication: Document.

Tussock moths in the genus Orgyia are small moths that are best-known because of their attractive larvae. Figure 1. Fir tussock moth Observations on the poisonous nature of the white-marked tussock-moth (Hemerocampa leucostigma Smith and Abbott).

The Journal of Parasitology 8(3):   Abstract. The long-term persistence of the nuclear polyhedrosis virus of the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), in forest soil has been established by bioassaying soil and duff samples from an area in which the last tussock moth outbreak took place in – Samples were taken from beneath each of 75 white fir, Abies Cited by: The Douglas-fir tussock moth, Orgyia pseudotsugata McDunnough (Lepidoptera: Lymantriidae) (DFTM), periodically reaches outbreak populations between the coastal and central mountain ranges in western North America (15, 32, 35, 50).Cited by: 6.

Seven outbreaks of Douglas-fir tussock moth, Orgyia pseudotsugata McDunnough, have recurred in the interior of British Columbia since But little is known about their impacts on renewable resources in affected stands.

A study was undertaken to examine effects of the most recent outbreak on understory vegetation and tree productivity near Kamloops, British. Black-tusked tussock moth caterpillars are munching fir trees along Colorado’s Front Range, spreading acr acres in one year and forcing. Adult Douglas-fir tussock moth male.

He is a dull, brown-gray, ordinary looking moth. Table 1. Total Volume Decline l of Tree Mortality with [no treatment) Natural Degree of defoliation Estimate Class 1, Intensive Class II, Moderate Class III, Light Class IV, None OSU low1 Percent 84 84 Percent 16 19 34 Percent 0 Percent 0.

Douglas-fir, white fir, and grand fir are all equally acceptable. In the south (California, Nevada, Arizona, and Figure 1. -- Distrubution of host type where Douglas-fir tussock moth may be found and location of outbreaks.

trees, brush, and buildings, but once an outbreak subsides, finding caterpil-lars is difficult. Defoliation by the tussock moth. The following is virtually the author's abstract.

Methods were developed to standardise sampling of Hemerocampa pseudotsugata[Orgyia pseudotsugata] McDunn.

in studies in California and Arizona in Population density was estimated in terms of the number of eggs or larvae per 1, in2 of branch area of white fir (Abies con-color). The density of the eggs and the Cited by: Tussock moth stock photos and images () Best Match Fresh.

Refine. Back Page of 3 moth trap in water Stock Photo by pedphoto36pm 0 / 1 tussock moth drown the water Stock Image by pedphoto36pm 0 / 1 White-marked Tussock Moth Caterpilar, Hemerocampa leucostigma Stock Photo by yandscreators 0 / 0 tussock moth trap in water Stock.

Treatment Options for Douglas-Fir Tussock Moth About Douglas-fir Tussock Moth Douglas-fir tussock moth (Orgyia pseudotsugata) is a defoliator of Douglas-fir, true fir (Abies spp.) and spruce (Engelmann and Colorado blue) trees. Native to Colorado’s forests, the insect also may impact Colorado blue spruce in urban settings.

Common Name: Whitemarked tussock moth Scientific Name: Orgyia (=Hemerocampa) leucostigma (J. ) Order: Lepidoptera Description: Caterpillars grow to /4 inch long and is unique in that there are four brush-like tufts or bunches of light tan hairs on the back (top of the first four abdominal segments) and red dots (abdominal segments six and seven).

Dahlsten DL, Thomas GM. A nucleopolyhedrosis virus in populations of the Douglas-fir tussock moth, Hemerocampa pseudotsugata, in California. J Invertebr Pathol. Mar; 13 (2)– Entwistle PF, Adams PH, Evans HF.

Epizootiology of a nuclear polyhedrosis virus in European spruce sawfly (Gilpinia hercyniae): the rate of passage of Cited by: Douglas-fir tussock moth (Hemerocampa pseudotsugata). Freshly formed cocoon opened to show pupa, cast larval head capsule, and larval exuviae.

Halfway, Oregon. ().jpg 1, × 1,; KBInfrakingdom: Protostomia. Collapse of an outbreak population of the douglas-fir tussock moth, Hemerocampa Pseudotsugata (Lepidoptera: Lymantriidae) / (Portland, Or.: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, []), by Richard R.

Mason, C. Thompson, and Or.) Pacific Northwest Forest and Range Experiment. The western tussock moth is an occasional pest in coastal apricot orchards. A mature larva is to 1 inch long with a gray background color and numerous red, blue, and yellow spots. Four white tufts of hair emerge from its back as well as two black tufts from its head and one from its tail end.

Larvae emerge in March and mature in May. DecAID, the Decayed Wood Advisor for Managing Snags, Partially Dead Trees, and Down Wood for Biodiversity in Forests of Washington and Oregon.

version Run DecAID. DecAID Science Team: Kim Mellen-McLean, Bruce G. Marcot, Janet L. Ohmann, Karen Waddell, Susan A. Livingston, Elizabeth A. Willhite, Bruce B. Hostetler, Catherine Ogden, Tina. eastern Oregon. To control a serious outbreak of the Douglas-fir tussock moth (Hemerocampa pseudotsugata McD.), 66, acres of forest were sprayed with DDT at the rate of 12 ounces per acre.

Since shortly before the spraying, we have studied persistence of the aerially applied DDT in the forest floor and soil (11). A very small amount. Derfinitely a tussock moth. And, if you found it in Colorado on blue spruce it was the Douglas-fir tussock moth.

Douglas-fir tussock moth can damage blue spruce. It is rare, and outbreaks are often widely spaced in time at any one location, but when they occur the caterpillars can extensively defoliate the tree.

For control of Douglas Fir Tussock Moths: In landscape plantings, pyrethroids such as permethrin (Astro), cyfluthrin (Tempo), bifenthrin (Talstar, Onyx) and lambda-cyhalothrin (Scimitar) are effective against Douglas-fir tussock moth caterpillars.

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