white-pine weevil

by Hopkins, A. D.

Publisher: United States. Dept. of Agriculture. Bureau of Entomology in [Washington, D.C.]

Written in English
Published: Downloads: 69
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  • White pine weevil.,
  • Pine -- Diseases and pests.
  • Edition Notes

    Also issued online.

    Statementby A.D. Hopkins.
    SeriesCircular -- no. 90., Circular (United States. Bureau of Entomology) -- no. 90.
    ContributionsUnited States. Bureau of Entomology.
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL18288092M
    LC Control Number07001915

Another note on white pine weevil – % of trees damaged this season is the threshold (in forestry) for treating next season. Hey, they don’t read the books! Spruce spider mite should be a cool season mite but according to Branching Out they are being found in high numbers even in warmer seasons, so keep scouting if you’ve had them. The white pine weevil causes extensive damage to many types of evergreen trees. It is also known as the Engelmann spruce weevil and the Sitka spruce weevil. Adult weevils are about 8 mm inches) long. These beetles are dark brown with white and tan patches on their backs. They have the characteristic and prominent hooked snout of the weevil.   Pine weevils are one of the most damaging insects that target white pines. They will readily feed on Norway, Serbian, Scots, Reds, Jacks and other species too. What makes pine weevils so devastating is they target young trees.   The anatomy of the resin canal system was observed on lateral branches of four host species of the white pine weevil (Pissodes strobi Peck) in relation to weevil host species studied were Norway spruce (Picea abies (L.) Karst.), white spruce (Picea glauca (Moench) Voss), red spruce (Picea rubens Sarg.), and white pine (Pinus strobus L.).Cited by:

The white pine weevil, considered the most destructive insect pest of eastern white pine in North America, is also a pest of Colorado blue, Norway and Serbian spruces, Scots, red, pitch, jack and. White pine weevil or spruce leader weevil (Pissodes strobi) is a weevil in the family Curculionidae (weevils or snout beetles) in the order weevils are brown with white spots; they occur in spruce and pine ecosystems throughout Canada.   Permethrin to control white pine weevil and carniolans Asked J , PM EDT I have tried to avoid spraying the spruce trees in my tree farm because I have two active, healthy carniolan honey bee hives near the trees.

white-pine weevil by Hopkins, A. D. Download PDF EPUB FB2

THE WHITE PINE WEEVIL (PISSODES STROBI PECK) ITS BIOLOGY AND CONTROL [MacAloney, Harvey J] on *FREE* shipping on qualifying offers.

THE WHITE PINE WEEVIL (PISSODES STROBI PECK) ITS BIOLOGY AND CONTROLAuthor: Harvey J MacAloney. The Biology And Control Of The White Pine Weevil, Pissodes Strobi-peck [Graham, Samuel Alexander] on *FREE* shipping on qualifying offers.

The Biology And Control Of The White-pine weevil book Pine Weevil, Pissodes Strobi-peck. The white pine weevil - Pissodes strobi (Peck) (Coleoptera: Curculionidae) - is a native insect attacking eastern white pine (Pinus strobus L.). The latest cytogenetic and breeding studies indicate that two other North American pine weevil species - the Sitka spruce weevil and the Engelmann spruce weevil-also should be classified as Pissodes Cited by: Internet Archive BookReader The white-pine weevil.

ematics of young white pine growth throughout much of the tree’s range. Fig. White pine wevil adult The Insect White pine weevil adults (Fig. 1) are one-quarter of an inch long and brown with distinct patches of whitish to reddish brown scales. The head is tapered anteriorly and the mouthparts occur at the end of a slender beak or snout.

White Pine Weevil Control Tips Attacks white pines, spruces More common in pure plantings Adults emerge in early spring when T > 50 F (as early as March in PA), Treat in early spring when adults emerge with borer pesticide Mechanically remove Shepard’s Crooks before August 1.

The white pine weevil is considered the most destructive insect pest of eastern white pine in North America. This species kills the terminal leader primarily of eastern white pine.

Colorado blue, Norway, and Serbian spruces, Scots, red, pitch, jack, and Austrian pines, and. White-pine weevil book the white pine weevil causes serious damage to white pine is not news; that the weevil can be controlled effectively through the application of a poison spray which kills the female before eggs are laid is welcome news to foresters.

Details of the treatment ar.e presented in the following article. HE white pine weevil (Pissodes strobi. Title: White Pine Weevil Author: W. Cranshaw Subject: The white pine weevil (Pissodes strobi) produces a conspicuous injury to the terminal growth of spruce late spring, new growth wilts and dies back.

The affected terminals wilt into a "shepherd's crook" form and the needles often become lighter colored before they ultimately die and Size: 3MB. White pine weevil larvae kill the terminal leader and the top two to four years of growth on many varieties of spruce, as well as white and Scots pine trees.

Damage from white pine weevil can be distinguished from other types of injury by the somewhat curled shape of the leader, sometimes referred to as a “shepherd’s crook” (see photo).

Pissodes strobi. Pest description and damage White pine weevils are brown beetles with light blotches on the highly curved back. Adults grow to about inch long and feed on shoots and needles of pine and spruce. The larvae feed on needles and also mine shoot tips, often distorting or killing back the terminals and causing trees to appear deformed.

White pine weevil larvae can kill the top whorl of spruce, pine, Douglas fir and, occasionally, fir trees. White pine weevil becomes active early in the growing season during the first few warm, spring days and will likely be active this week as temperatures warm (as of April 12).

White pine weevils reproduce only once each year. Adults emerge in early spring and move to infest host trees. These weevils mate in the fall and eggs are laid in host trees in the spring. Eggs hatch within 10 days, but adults do not remain with their larvae.

Signs of a White Pine Weevil Infestation. White pine weevils are only threatening when white pines are young. A little white pine weevil damage is not detrimental to a young white pine's health, and the damage can simply be pruned away.

If several lateral branches are competing to be the terminal leader, all but one can be pruned away. This will help the tree correct its form. White Pine Weevil. The white pine weevil is one of the most serious pests of white pine in the area. Feeding damage rarely kills trees but can cause multiple leaders to develop on infested trees as the terminal leader is killed.

Feeding injury can also stunt or distort trees. Host Trees. Most seriously attacked: white pine, Norway spruce, and. Pissodes strobi, known as the white pine weevil or Engelmann spruce weevil, is the primary weevil attacking and destroying white pines.

It was described in by William Dandridge Peck, professor of natural history and botany at Harvard : Curculionidae. The white pine weevil (figure 1) - Pissodes strobi (Peck) (Coleoptera: Curculionidae) - is a native insect attacking eastern white pine (Pinus strobus L.).The latest cytogenetic and breeding studies indicate that two other North American pine weevil species - the Sitka spruce weevil and the Engelmann spruce weevil-also should be classified as Pissodes strobi.

White Pine Weevil is one of our sneakiest conifer pests found in Ohio. Females spend the winter out of sight cooling their six heels in the duff beneath their pine or spruce targets.

As temperatures warm in the spring, they climb their hosts to feed and lay eggs in the terminals. Sap oozing from small holes in the terminals is a calling card of this weevil. In the prairie provinces of Canada, white pine weevil is considered a serious pest of jack pine, red pine, and Scots pine, and an occasional pest of mugho pine.

To our knowl-edge, white pine weevil does not attack these pines in Idaho. INSECT IDENTIFICATION The adult insect is a 1/4-inch long weevil that is mottled brown (Fig.

2).File Size: KB. The white pine weevil, Pissodes strobi, is a key pest in conifer production. This is primarily due to its feeding damage to the terminal of conifers causing flagging and dieback. This is primarily due to its feeding damage to the terminal of conifers causing flagging and dieback.

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White pine weevil larval feeding damage is now evident throughout Ohio. Look for brown, wilted main shoots (terminal leaders) with the tips sometimes curved into a "shepherd’s crook." There is one generation per year and localized populations may be reduced by removing and destroying the infested terminals before new adult weevils emerge.

Native to North America, the white pine weevil occurs throughout the range of white pine in eastern Canada. In western Canada, its distribution coincides with that of various species of spruce.

This insect was first described in by W. Peck, a professor at Harvard University. Micro-habitat(s) Bud, Twig, Terminal shoot. Damage, symptoms. Additional Physical Format: Online version: Hopkins, A. (Andrew Delmar), White-pine weevil. Washington, D.C.: U.S. Dept.

of Agriculture. If so, the culprit is probably the White Pine Weevil (Pissodes strobi). Trees Susceptible to Damage Don’t let the name fool you – this native insect doesn’t only attack Eastern white pines, but also goes after Scots, Austrian, jack, red, and pitch pines, as well as Douglas fir and all spruces (including Colorado blue, Norway and Serbian.

White pine weevil is native to North America and considered the most destructive insect pest of eastern white pine. While eastern white and jack pine are most vulnerable, white pine weevils can develop in more than 20 tree species. Trees three to 20 feet tall are typically attacked.

If attack is. Audio Books & Poetry Community Audio Computers & Technology Music, Arts & Culture News & Public Affairs Non-English Audio Spirituality & Religion.

Librivox Free Audiobook. Podcasts. Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library. Field studies were conducted in which adult white pine weevils, Pissodes strobi (Peck), were confined on the leaders of six different conifer species and various parameters of weevil attack were recorded.

Eastern white pine, Pinus strobus, the preferred native host, was the most susceptible to attack and the most suitable for brood white pine leaders on which 3 or 6 male Cited by: 7. The white pine weevil, Pissodes strobi, also known as the Sitka spruce weevil, feeds on the terminals of pines and spruces.

This weevil is found throughout many of the western states. Biology and Description. Adult white pine weevils are oval-shaped beetles. They are brown with light flecks that form a band across the wing covers. An insect, the white pine weevil, bores into the terminal shoot causing death of that branch.

The weevil rarely kills the whole tree, but places it in a weakened state where the attack of other insects, diseases, or environmental problems can cause gradual death. Eastern white pine (Pinus strobus) is a fast-growing tree. Unfortunately, as they.

The white pine weevil, Pissodes strobi Peck, can be found in nearly all regions of Canada and the U.S. It causes severe deformity and growth losses by damaging a tree's leader, which results in.The white pine weevil, which kills the tops of conifers, is the most serious economic insect pest of white pine in Maine.

Weevil attacks result in trees that are multi ­topped, crooked, and of much lower value for sawtimber. Appearance and development of ornamental trees are also affected.white pine only. However, some of the management issues also may address problems associated with attacks on other tree species.

Figure 1 - Adult white pine weevil. In the eastern United States, the white pine weevil may attack at least 20 different tree species, including ornamentals.

However, eastern white pine is the most suitable host for.